Merge tag '0.4.0rc2' into debian/0.4.0rc2

Tag leap.mail version 0.4.0rc2

70 files changed, 9749 insertions, 8164 deletions

diff --git a/src/leap/mail/_version.py b/src/leap/mail/_version.py
index fe18f6c..d32052b 100644
--- a/src/leap/mail/_version.py
+++ b/src/leap/mail/_version.py
@@ -1,4 +1,3 @@
-
 # This file was generated by the `freeze_debianver` command in setup.py
 # Using 'versioneer.py' (0.7+) from
 # revision-control system data, or from the parent directory name of an
diff --git a/src/leap/mail/adaptors/__init__.py b/src/leap/mail/adaptors/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/src/leap/mail/adaptors/__init__.py
diff --git a/src/leap/mail/adaptors/models.py b/src/leap/mail/adaptors/models.py
new file mode 100644
index 0000000..49460f7
--- /dev/null
+++ b/src/leap/mail/adaptors/models.py
@@ -0,0 +1,123 @@
+# -*- coding: utf-8 -*-
+# models.py
+# Copyright (C) 2014 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+Generic Models to be used by the Document Adaptors.
+"""
+import copy
+
+
+class SerializableModel(object):
+    """
+    A Generic document model, that can be serialized into a dictionary.
+
+    Subclasses of this `SerializableModel` are meant to be added as class
+    attributes of classes inheriting from DocumentWrapper.
+
+    A subclass __meta__ of this SerializableModel might exist, and contain info
+    relative to particularities of this model.
+
+    For instance, the use of `__meta__.index` marks the existence of a primary
+    index in the model, which will be used to do unique queries (in which case
+    all the other indexed fields in the underlying document will be filled with
+    the default info contained in the model definition).
+    """
+
+    @classmethod
+    def serialize(klass):
+        """
+        Get a dictionary representation of the public attributes in the model
+        class. To avoid collisions with builtin functions, any occurrence of an
+        attribute ended in '_' (like 'type_') will be normalized by removing
+        the trailing underscore.
+
+        This classmethod is used from within the serialized method of a
+        DocumentWrapper instance: it provides defaults for the
+        empty document.
+        """
+        assert isinstance(klass, type)
+        return _normalize_dict(klass.__dict__)
+
+
+class DocumentWrapper(object):
+    """
+    A Wrapper object that can be manipulated, passed around, and serialized in
+    a format that the store understands.
+    It is related to a SerializableModel, which must be specified as the
+    ``model`` class attribute.  The instance of this DocumentWrapper will not
+    allow any other *public* attributes than those defined in the corresponding
+    model.
+    """
+    # TODO we could do some very basic type checking here
+    # TODO set a dirty flag (on __setattr__, whenever the value is != from
+    # before)
+    # TODO we could enforce the existence of a correct "model" attribute
+    # in some other way (other than in the initializer)
+
+    def __init__(self, **kwargs):
+        if not getattr(self, 'model', None):
+            raise RuntimeError(
+                'DocumentWrapper class needs a model attribute')
+
+        defaults = self.model.serialize()
+
+        if kwargs:
+            values = copy.deepcopy(defaults)
+            values.update(_normalize_dict(kwargs))
+        else:
+            values = defaults
+
+        for k, v in values.items():
+            k = k.replace('-', '_')
+            setattr(self, k, v)
+
+    def __setattr__(self, attr, value):
+        normalized = _normalize_dict(self.model.__dict__)
+        if not attr.startswith('_') and attr not in normalized:
+            raise RuntimeError(
+                "Cannot set attribute because it's not defined "
+                "in the model %s: %s" % (self.__class__, attr))
+        object.__setattr__(self, attr, value)
+
+    def serialize(self):
+        return _normalize_dict(self.__dict__)
+
+    def create(self):
+        raise NotImplementedError()
+
+    def update(self):
+        raise NotImplementedError()
+
+    def delete(self):
+        raise NotImplementedError()
+
+    @classmethod
+    def get_or_create(self):
+        raise NotImplementedError()
+
+    @classmethod
+    def get_all(self):
+        raise NotImplementedError()
+
+
+def _normalize_dict(_dict):
+    items = _dict.items()
+    items = filter(lambda (k, v): not callable(v), items)
+    items = filter(lambda (k, v): not k.startswith('_'), items)
+    items = [(k, v) if not k.endswith('_') else (k[:-1], v)
+             for (k, v) in items]
+    items = [(k.replace('-', '_'), v) for (k, v) in items]
+    return dict(items)
diff --git a/src/leap/mail/adaptors/soledad.py b/src/leap/mail/adaptors/soledad.py
new file mode 100644
index 0000000..d114707
--- /dev/null
+++ b/src/leap/mail/adaptors/soledad.py
@@ -0,0 +1,1248 @@
+# soledad.py
+# Copyright (C) 2014 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+Soledadad MailAdaptor module.
+"""
+import logging
+import re
+
+from collections import defaultdict
+from email import message_from_string
+
+from pycryptopp.hash import sha256
+from twisted.internet import defer
+from twisted.python import log
+from zope.interface import implements
+import u1db
+
+from leap.common.check import leap_assert, leap_assert_type
+
+from leap.mail import constants
+from leap.mail import walk
+from leap.mail.adaptors import soledad_indexes as indexes
+from leap.mail.constants import INBOX_NAME
+from leap.mail.adaptors import models
+from leap.mail.imap.mailbox import normalize_mailbox
+from leap.mail.utils import lowerdict, first
+from leap.mail.utils import stringify_parts_map
+from leap.mail.interfaces import IMailAdaptor, IMessageWrapper
+
+from leap.soledad.common.document import SoledadDocument
+
+
+logger = logging.getLogger(__name__)
+
+# TODO
+# [ ] Convenience function to create mail specifying subject, date, etc?
+
+
+_MSGID_PATTERN = r"""<([\w@.]+)>"""
+_MSGID_RE = re.compile(_MSGID_PATTERN)
+
+
+class DuplicatedDocumentError(Exception):
+    """
+    Raised when a duplicated document is detected.
+    """
+    pass
+
+
+def cleanup_deferred_locks():
+    """
+    Need to use this from within trial to cleanup the reactor before
+    each run.
+    """
+    SoledadDocumentWrapper._k_locks = defaultdict(defer.DeferredLock)
+
+
+class SoledadDocumentWrapper(models.DocumentWrapper):
+    """
+    A Wrapper object that can be manipulated, passed around, and serialized in
+    a format that the Soledad Store understands.
+
+    It ensures atomicity of the document operations on creation, update and
+    deletion.
+    """
+    # TODO we could also use a _dirty flag (in models)
+    # TODO add a get_count() method ??? -- that is extended over u1db.
+
+    # We keep a dictionary with DeferredLocks, that will be
+    # unique to every subclass of SoledadDocumentWrapper.
+    _k_locks = defaultdict(defer.DeferredLock)
+
+    @classmethod
+    def _get_klass_lock(cls):
+        """
+        Get a DeferredLock that is unique for this subclass name.
+        Used to lock the access to indexes in the `get_or_create` call
+        for a particular DocumentWrapper.
+        """
+        return cls._k_locks[cls.__name__]
+
+    def __init__(self, doc_id=None, future_doc_id=None, **kwargs):
+        self._doc_id = doc_id
+        self._future_doc_id = future_doc_id
+        self._lock = defer.DeferredLock()
+        super(SoledadDocumentWrapper, self).__init__(**kwargs)
+
+    @property
+    def doc_id(self):
+        return self._doc_id
+
+    @property
+    def future_doc_id(self):
+        return self._future_doc_id
+
+    def set_future_doc_id(self, doc_id):
+        self._future_doc_id = doc_id
+
+    def create(self, store, is_copy=False):
+        """
+        Create the documents for this wrapper.
+        Since this method will not check for duplication, the
+        responsibility of avoiding duplicates is left to the caller.
+
+        You might be interested in using `get_or_create` classmethod
+        instead (that's the preferred way of creating documents from
+        the wrapper object).
+
+        :return: a deferred that will fire when the underlying
+                 Soledad document has been created.
+        :rtype: Deferred
+        """
+        leap_assert(self._doc_id is None,
+                    "This document already has a doc_id!")
+
+        def update_doc_id(doc):
+            self._doc_id = doc.doc_id
+            self.set_future_doc_id(None)
+            return doc
+
+        def update_wrapper(failure):
+            # In the case of some copies (for instance, from one folder to
+            # another and back to the original folder), the document that we
+            # want to insert already exists. In this  case, putting it
+            # and overwriting the document with that doc_id is the right thing
+            # to do.
+            failure.trap(u1db.errors.RevisionConflict)
+            self._doc_id = self.future_doc_id
+            self._future_doc_id = None
+            return self.update(store)
+
+        if self.future_doc_id is None:
+            d = store.create_doc(self.serialize())
+        else:
+            d = store.create_doc(self.serialize(),
+                                 doc_id=self.future_doc_id)
+        d.addCallback(update_doc_id)
+
+        if is_copy:
+            d.addErrback(update_wrapper)
+        else:
+            d.addErrback(self._catch_revision_conflict, self.future_doc_id)
+        return d
+
+    def update(self, store):
+        """
+        Update the documents for this wrapper.
+
+        :return: a deferred that will fire when the underlying
+                 Soledad document has been updated.
+        :rtype: Deferred
+        """
+        # the deferred lock guards against revision conflicts
+        return self._lock.run(self._update, store)
+
+    def _update(self, store):
+        leap_assert(self._doc_id is not None,
+                    "Need to create doc before updating")
+
+        def update_and_put_doc(doc):
+            doc.content.update(self.serialize())
+            d = store.put_doc(doc)
+            d.addErrback(self._catch_revision_conflict, doc.doc_id)
+            return d
+
+        d = store.get_doc(self._doc_id)
+        d.addCallback(update_and_put_doc)
+        return d
+
+    def _catch_revision_conflict(self, failure, doc_id):
+        # XXX We can have some RevisionConflicts if we try
+        # to put the docs that are already there.
+        # This can happen right now when creating/saving the cdocs
+        # during a copy. Instead of catching and ignoring this
+        # error, we should mark them in the copy so there is no attempt to
+        # create/update them.
+        failure.trap(u1db.errors.RevisionConflict)
+        logger.debug("Got conflict while putting %s" % doc_id)
+
+    def delete(self, store):
+        """
+        Delete the documents for this wrapper.
+
+        :return: a deferred that will fire when the underlying
+                 Soledad document has been deleted.
+        :rtype: Deferred
+        """
+        # the deferred lock guards against conflicts while updating
+        return self._lock.run(self._delete, store)
+
+    def _delete(self, store):
+        leap_assert(self._doc_id is not None,
+                    "Need to create doc before deleting")
+        # XXX might want to flag this DocumentWrapper to avoid
+        # updating it by mistake. This could go in models.DocumentWrapper
+
+        def delete_doc(doc):
+            return store.delete_doc(doc)
+
+        d = store.get_doc(self._doc_id)
+        d.addCallback(delete_doc)
+        return d
+
+    @classmethod
+    def get_or_create(cls, store, index, value):
+        """
+        Get a unique DocumentWrapper by index, or create a new one if the
+        matching query does not exist.
+
+        :param index: the primary index for the model.
+        :type index: str
+        :param value: the value to query the primary index.
+        :type value: str
+
+        :return: a deferred that will be fired with the SoledadDocumentWrapper
+                 matching the index query, either existing or just created.
+        :rtype: Deferred
+        """
+        return cls._get_klass_lock().run(
+            cls._get_or_create, store, index, value)
+
+    @classmethod
+    def _get_or_create(cls, store, index, value):
+        # TODO shorten this method.
+        assert store is not None
+        assert index is not None
+        assert value is not None
+
+        def get_main_index():
+            try:
+                return cls.model.__meta__.index
+            except AttributeError:
+                raise RuntimeError("The model is badly defined")
+
+        # TODO separate into another method?
+        def try_to_get_doc_from_index(indexes):
+            values = []
+            idx_def = dict(indexes)[index]
+            if len(idx_def) == 1:
+                values = [value]
+            else:
+                main_index = get_main_index()
+                fields = cls.model.serialize()
+                for field in idx_def:
+                    if field == main_index:
+                        values.append(value)
+                    else:
+                        values.append(fields[field])
+            d = store.get_from_index(index, *values)
+            return d
+
+        def get_first_doc_if_any(docs):
+            if not docs:
+                return None
+            if len(docs) > 1:
+                raise DuplicatedDocumentError
+            return docs[0]
+
+        def wrap_existing_or_create_new(doc):
+            if doc:
+                return cls(doc_id=doc.doc_id, **doc.content)
+            else:
+                return create_and_wrap_new_doc()
+
+        def create_and_wrap_new_doc():
+            # XXX use closure to store indexes instead of
+            # querying for them again.
+            d = store.list_indexes()
+            d.addCallback(get_wrapper_instance_from_index)
+            d.addCallback(return_wrapper_when_created)
+            return d
+
+        def get_wrapper_instance_from_index(indexes):
+            init_values = {}
+            idx_def = dict(indexes)[index]
+            if len(idx_def) == 1:
+                init_value = {idx_def[0]: value}
+                return cls(**init_value)
+            main_index = get_main_index()
+            fields = cls.model.serialize()
+            for field in idx_def:
+                if field == main_index:
+                    init_values[field] = value
+                else:
+                    init_values[field] = fields[field]
+            return cls(**init_values)
+
+        def return_wrapper_when_created(wrapper):
+            d = wrapper.create(store)
+            d.addCallback(lambda doc: wrapper)
+            return d
+
+        d = store.list_indexes()
+        d.addCallback(try_to_get_doc_from_index)
+        d.addCallback(get_first_doc_if_any)
+        d.addCallback(wrap_existing_or_create_new)
+        return d
+
+    @classmethod
+    def get_all(cls, store):
+        """
+        Get a collection of wrappers around all the documents belonging
+        to this kind.
+
+        For this to work, the model.__meta__ needs to include a tuple with
+        the index to be used for listing purposes, and which is the field to be
+        used to query the index.
+
+        Note that this method only supports indexes of a single field at the
+        moment. It also might be too expensive to return all the documents
+        matching the query, so handle with care.
+
+        class __meta__(object):
+            index = "name"
+            list_index = ("by-type", "type_")
+
+        :return: a deferred that will be fired with an iterable containing
+                 as many SoledadDocumentWrapper are matching the index defined
+                 in the model as the `list_index`.
+        :rtype: Deferred
+        """
+        # TODO LIST (get_all)
+        # [ ] extend support to indexes with n-ples
+        # [ ] benchmark the cost of querying and returning indexes in a big
+        #     database. This might badly need pagination before being put to
+        #     serious use.
+        return cls._get_klass_lock().run(cls._get_all, store)
+
+    @classmethod
+    def _get_all(cls, store):
+        try:
+            list_index, list_attr = cls.model.__meta__.list_index
+        except AttributeError:
+            raise RuntimeError("The model is badly defined: no list_index")
+        try:
+            index_value = getattr(cls.model, list_attr)
+        except AttributeError:
+            raise RuntimeError("The model is badly defined: "
+                               "no attribute matching list_index")
+
+        def wrap_docs(docs):
+            return (cls(doc_id=doc.doc_id, **doc.content) for doc in docs)
+
+        d = store.get_from_index(list_index, index_value)
+        d.addCallback(wrap_docs)
+        return d
+
+    def __repr__(self):
+        try:
+            idx = getattr(self, self.model.__meta__.index)
+        except AttributeError:
+            idx = ""
+        return "<%s: %s (%s)>" % (self.__class__.__name__,
+                                  idx, self._doc_id)
+
+
+#
+# Message documents
+#
+
+class FlagsDocWrapper(SoledadDocumentWrapper):
+
+    class model(models.SerializableModel):
+        type_ = "flags"
+        chash = ""
+
+        mbox_uuid = ""
+        seen = False
+        deleted = False
+        recent = False
+        flags = []
+        tags = []
+        size = 0
+        multi = False
+
+        class __meta__(object):
+            index = "mbox"
+
+    def set_mbox_uuid(self, mbox_uuid):
+        # XXX raise error if already created, should use copy instead
+        mbox_uuid = mbox_uuid.replace('-', '_')
+        new_id = constants.FDOCID.format(mbox_uuid=mbox_uuid, chash=self.chash)
+        self._future_doc_id = new_id
+        self.mbox_uuid = mbox_uuid
+
+    def get_flags(self):
+        """
+        Get the flags for this message (as a tuple of strings, not unicode).
+        """
+        return map(str, self.flags)
+
+
+class HeaderDocWrapper(SoledadDocumentWrapper):
+
+    class model(models.SerializableModel):
+        type_ = "head"
+        chash = ""
+
+        date = ""
+        subject = ""
+        headers = {}
+        part_map = {}
+        body = ""  # link to phash of body
+        msgid = ""
+        multi = False
+
+        class __meta__(object):
+            index = "chash"
+
+
+class ContentDocWrapper(SoledadDocumentWrapper):
+
+    class model(models.SerializableModel):
+        type_ = "cnt"
+        phash = ""
+
+        ctype = ""  # XXX index by ctype too?
+        lkf = []  # XXX not implemented yet!
+        raw = ""
+
+        content_disposition = ""
+        content_transfer_encoding = ""
+        content_type = ""
+
+        class __meta__(object):
+            index = "phash"
+
+
+class MetaMsgDocWrapper(SoledadDocumentWrapper):
+
+    class model(models.SerializableModel):
+        type_ = "meta"
+        fdoc = ""
+        hdoc = ""
+        cdocs = []
+
+    def set_mbox_uuid(self, mbox_uuid):
+        # XXX raise error if already created, should use copy instead
+        mbox_uuid = mbox_uuid.replace('-', '_')
+        chash = re.findall(constants.FDOCID_CHASH_RE, self.fdoc)[0]
+        new_id = constants.METAMSGID.format(mbox_uuid=mbox_uuid, chash=chash)
+        new_fdoc_id = constants.FDOCID.format(mbox_uuid=mbox_uuid, chash=chash)
+        self._future_doc_id = new_id
+        self.fdoc = new_fdoc_id
+
+
+class MessageWrapper(object):
+
+    # This could benefit of a DeferredLock to create/update all the
+    # documents at the same time maybe, and defend against concurrent updates?
+
+    implements(IMessageWrapper)
+
+    def __init__(self, mdoc, fdoc, hdoc, cdocs=None, is_copy=False):
+        """
+        Need at least a metamsg-document, a flag-document and a header-document
+        to instantiate a MessageWrapper. Content-documents can be retrieved
+        lazily.
+
+        cdocs, if any, should be a dictionary in which the keys are ascending
+        integers, beginning at one, and the values are dictionaries with the
+        content of the content-docs.
+
+        is_copy, if set to True, will only attempt to create mdoc and fdoc
+        (because hdoc and cdocs are supposed to exist already)
+        """
+        self._is_copy = is_copy
+
+        def get_doc_wrapper(doc, cls):
+            if isinstance(doc, SoledadDocument):
+                doc_id = doc.doc_id
+                doc = doc.content
+            else:
+                doc_id = None
+            if not doc:
+                doc = {}
+            return cls(doc_id=doc_id, **doc)
+
+        self.mdoc = get_doc_wrapper(mdoc, MetaMsgDocWrapper)
+
+        self.fdoc = get_doc_wrapper(fdoc, FlagsDocWrapper)
+        self.fdoc.set_future_doc_id(self.mdoc.fdoc)
+
+        self.hdoc = get_doc_wrapper(hdoc, HeaderDocWrapper)
+        self.hdoc.set_future_doc_id(self.mdoc.hdoc)
+
+        if cdocs is None:
+            cdocs = {}
+        cdocs_keys = cdocs.keys()
+        assert sorted(cdocs_keys) == range(1, len(cdocs_keys) + 1)
+        self.cdocs = dict([
+            (key, get_doc_wrapper(doc, ContentDocWrapper))
+            for (key, doc) in cdocs.items()])
+        for doc_id, cdoc in zip(self.mdoc.cdocs, self.cdocs.values()):
+            if cdoc.raw == "":
+                log.msg("Empty raw field in cdoc %s" % doc_id)
+            cdoc.set_future_doc_id(doc_id)
+
+    def create(self, store, notify_just_mdoc=False, pending_inserts_dict={}):
+        """
+        Create all the parts for this message in the store.
+
+        :param store: an instance of Soledad
+
+        :param notify_just_mdoc:
+            if set to True, this method will return *only* the deferred
+            corresponding to the creation of the meta-message document.
+            Be warned that in that case there will be no record of failures
+            when creating the other part-documents.
+
+            Otherwise, this method will return a deferred that will wait for
+            the creation of all the part documents.
+
+            Setting this flag to True is mostly a convenient workaround for the
+            fact that massive serial appends will take too much time, and in
+            most of the cases the MUA will only switch to the mailbox where the
+            appends have happened after a certain time, which in most of the
+            times will be enough to have all the queued insert operations
+            finished.
+        :type notify_just_mdoc: bool
+        :param pending_inserts_dict:
+            a dictionary with the pending inserts ids.
+        :type pending_inserts_dict: dict
+
+        :return: a deferred whose callback will be called when either all the
+                 part documents have been written, or just the metamsg-doc,
+                 depending on the value of the notify_just_mdoc flag
+        :rtype: defer.Deferred
+        """
+        leap_assert(self.cdocs,
+                    "Need non empty cdocs to create the "
+                    "MessageWrapper documents")
+        leap_assert(self.mdoc.doc_id is None,
+                    "Cannot create: mdoc has a doc_id")
+        leap_assert(self.fdoc.doc_id is None,
+                    "Cannot create: fdoc has a doc_id")
+
+        def unblock_pending_insert(result):
+            if pending_inserts_dict:
+                ci_headers = lowerdict(self.hdoc.headers)
+                msgid = ci_headers.get('message-id', None)
+                try:
+                    d = pending_inserts_dict[msgid]
+                    d.callback(msgid)
+                except KeyError:
+                    pass
+            return result
+
+        # TODO check that the doc_ids in the mdoc are coherent
+        self.d = []
+
+        mdoc_created = self.mdoc.create(store, is_copy=self._is_copy)
+        fdoc_created = self.fdoc.create(store, is_copy=self._is_copy)
+
+        mdoc_created.addErrback(lambda f: log.err(f))
+        fdoc_created.addErrback(lambda f: log.err(f))
+
+        self.d.append(mdoc_created)
+        self.d.append(fdoc_created)
+
+        if not self._is_copy:
+            if self.hdoc.doc_id is None:
+                self.d.append(self.hdoc.create(store))
+            for cdoc in self.cdocs.values():
+                if cdoc.doc_id is not None:
+                    # we could be just linking to an existing
+                    # content-doc.
+                    continue
+                self.d.append(cdoc.create(store))
+
+        def log_all_inserted(result):
+            log.msg("All parts inserted for msg!")
+            return result
+
+        self.all_inserted_d = defer.gatherResults(self.d, consumeErrors=True)
+        self.all_inserted_d.addCallback(log_all_inserted)
+        self.all_inserted_d.addCallback(unblock_pending_insert)
+        self.all_inserted_d.addErrback(lambda failure: log.err(failure))
+
+        if notify_just_mdoc:
+            return mdoc_created
+        else:
+            return self.all_inserted_d
+
+    def update(self, store):
+        """
+        Update the only mutable parts, which are within the flags document.
+        """
+        return self.fdoc.update(store)
+
+    def delete(self, store):
+        # TODO
+        # Eventually this would have to do the duplicate search or send for the
+        # garbage collector. At least mdoc and t the mdoc and fdoc can be
+        # unlinked.
+        d = []
+        if self.mdoc.doc_id:
+            d.append(self.mdoc.delete(store))
+        d.append(self.fdoc.delete(store))
+        return defer.gatherResults(d)
+
+    def copy(self, store, new_mbox_uuid):
+        """
+        Return a copy of this MessageWrapper in a new mailbox.
+
+        :param store: an instance of Soledad, or anything that behaves alike.
+        :param new_mbox_uuid: the uuid of the mailbox where we are copying this
+               message to.
+        :type new_mbox_uuid: str
+        :rtype: MessageWrapper
+        """
+        new_mdoc = self.mdoc.serialize()
+        new_fdoc = self.fdoc.serialize()
+
+        # the future doc_ids is properly set because we modified
+        # the pointers in mdoc, which has precedence.
+        new_wrapper = MessageWrapper(new_mdoc, new_fdoc, None, None,
+                                     is_copy=True)
+        new_wrapper.hdoc = self.hdoc
+        new_wrapper.cdocs = self.cdocs
+        new_wrapper.set_mbox_uuid(new_mbox_uuid)
+
+        # XXX could flag so that it only creates mdoc/fdoc...
+
+        d = new_wrapper.create(store)
+        d.addCallback(lambda result: new_wrapper)
+        d.addErrback(lambda failure: log.err(failure))
+        return d
+
+    def set_mbox_uuid(self, mbox_uuid):
+        """
+        Set the mailbox for this wrapper.
+        This method should only be used before the Documents for the
+        MessageWrapper have been created, will raise otherwise.
+        """
+        mbox_uuid = mbox_uuid.replace('-', '_')
+        self.mdoc.set_mbox_uuid(mbox_uuid)
+        self.fdoc.set_mbox_uuid(mbox_uuid)
+
+    def set_flags(self, flags):
+        # TODO serialize the get + update
+        if flags is None:
+            flags = tuple()
+        leap_assert_type(flags, tuple)
+        self.fdoc.flags = list(flags)
+        self.fdoc.deleted = "\\Deleted" in flags
+        self.fdoc.seen = "\\Seen" in flags
+        self.fdoc.recent = "\\Recent" in flags
+
+    def set_tags(self, tags):
+        # TODO serialize the get + update
+        if tags is None:
+            tags = tuple()
+        leap_assert_type(tags, tuple)
+        self.fdoc.tags = list(tags)
+
+    def set_date(self, date):
+        # XXX assert valid date format
+        self.hdoc.date = date
+
+    def get_subpart_dict(self, index):
+        """
+        :param index: the part to lookup, 1-indexed
+        :type index: int
+        :rtype: dict
+        """
+        return self.hdoc.part_map[str(index)]
+
+    def get_subpart_indexes(self):
+        return self.hdoc.part_map.keys()
+
+    def get_body(self, store):
+        """
+        :rtype: deferred
+        """
+        body_phash = self.hdoc.body
+        if not body_phash:
+            if self.cdocs:
+                return self.cdocs[1]
+        d = store.get_doc('C-' + body_phash)
+        d.addCallback(lambda doc: ContentDocWrapper(**doc.content))
+        return d
+
+
+#
+# Mailboxes
+#
+
+
+class MailboxWrapper(SoledadDocumentWrapper):
+
+    class model(models.SerializableModel):
+        type_ = "mbox"
+        mbox = INBOX_NAME
+        uuid = None
+        flags = []
+        recent = []
+        created = 1
+        closed = False
+        subscribed = False
+
+        class __meta__(object):
+            index = "mbox"
+            list_index = (indexes.TYPE_IDX, 'type_')
+
+
+#
+# Soledad Adaptor
+#
+
+class SoledadIndexMixin(object):
+    """
+    This will need a class attribute `indexes`, that is a dictionary containing
+    the index definitions for the underlying u1db store underlying soledad.
+
+    It needs to be in the following format:
+    {'index-name': ['field1', 'field2']}
+
+    You can also add a class attribute `wait_for_indexes` to any class
+    inheriting from this Mixin, that should be a list of strings representing
+    the methods that need to wait until the indexes have been initialized
+    before being able to work properly.
+    """
+    # TODO move this mixin to soledad itself
+    # so that each application can pass a set of indexes for their data model.
+
+    # TODO could have a wrapper class for indexes, supporting introspection
+    # and __getattr__
+
+    # TODO make this an interface?
+
+    indexes = {}
+    wait_for_indexes = []
+    store_ready = False
+
+    def initialize_store(self, store):
+        """
+        Initialize the indexes in the database.
+
+        :param store: store
+        :returns: a Deferred that will fire when the store is correctly
+                  initialized.
+        :rtype: deferred
+        """
+        # TODO I think we *should* get another deferredLock in here, but
+        # global to the soledad namespace, to protect from several points
+        # initializing soledad indexes at the same time.
+        self._wait_for_indexes()
+
+        d = self._init_indexes(store)
+        d.addCallback(self._restore_waiting_methods)
+        return d
+
+    def _init_indexes(self, store):
+        """
+        Initialize the database indexes.
+        """
+        leap_assert(store, "Cannot init indexes with null soledad")
+        leap_assert_type(self.indexes, dict)
+
+        def _create_index(name, expression):
+            return store.create_index(name, *expression)
+
+        def init_idexes(indexes):
+            deferreds = []
+            db_indexes = dict(indexes)
+            # Loop through the indexes we expect to find.
+            for name, expression in self.indexes.items():
+                if name not in db_indexes:
+                    # The index does not yet exist.
+                    d = _create_index(name, expression)
+                    deferreds.append(d)
+                elif expression != db_indexes[name]:
+                    # The index exists but the definition is not what expected,
+                    # so we delete it and add the proper index expression.
+                    d = store.delete_index(name)
+                    d.addCallback(
+                        lambda _: _create_index(name, *expression))
+                    deferreds.append(d)
+            return defer.gatherResults(deferreds, consumeErrors=True)
+
+        def store_ready(whatever):
+            self.store_ready = True
+            return whatever
+
+        self.deferred_indexes = store.list_indexes()
+        self.deferred_indexes.addCallback(init_idexes)
+        self.deferred_indexes.addCallback(store_ready)
+        return self.deferred_indexes
+
+    def _wait_for_indexes(self):
+        """
+        Make the marked methods to wait for the indexes to be ready.
+        Heavily based on
+        http://blogs.fluidinfo.com/terry/2009/05/11/a-mixin-class-allowing-python-__init__-methods-to-work-with-twisted-deferreds/
+
+        :param methods: methods that need to wait for the indexes to be ready
+        :type methods: tuple(str)
+        """
+        leap_assert_type(self.wait_for_indexes, list)
+        methods = self.wait_for_indexes
+
+        self.waiting = []
+        self.stored = {}
+
+        def makeWrapper(method):
+            def wrapper(*args, **kw):
+                d = defer.Deferred()
+                d.addCallback(lambda _: self.stored[method](*args, **kw))
+                self.waiting.append(d)
+                return d
+            return wrapper
+
+        for method in methods:
+            self.stored[method] = getattr(self, method)
+            setattr(self, method, makeWrapper(method))
+
+    def _restore_waiting_methods(self, _):
+        for method in self.stored:
+            setattr(self, method, self.stored[method])
+        for d in self.waiting:
+            d.callback(None)
+
+
+class SoledadMailAdaptor(SoledadIndexMixin):
+
+    implements(IMailAdaptor)
+    store = None
+
+    indexes = indexes.MAIL_INDEXES
+    wait_for_indexes = ['get_or_create_mbox', 'update_mbox', 'get_all_mboxes']
+
+    mboxwrapper_klass = MailboxWrapper
+
+    def __init__(self):
+        SoledadIndexMixin.__init__(self)
+
+    # Message handling
+
+    def get_msg_from_string(self, MessageClass, raw_msg):
+        """
+        Get an instance of a MessageClass initialized with a MessageWrapper
+        that contains all the parts obtained from parsing the raw string for
+        the message.
+
+        :param MessageClass: any Message class that can be initialized passing
+                             an instance of an IMessageWrapper implementor.
+        :type MessageClass: type
+        :param raw_msg: a string containing the raw email message.
+        :type raw_msg: str
+        :rtype: MessageClass instance.
+        """
+        assert(MessageClass is not None)
+        mdoc, fdoc, hdoc, cdocs = _split_into_parts(raw_msg)
+        return self.get_msg_from_docs(
+            MessageClass, mdoc, fdoc, hdoc, cdocs)
+
+    def get_msg_from_docs(self, MessageClass, mdoc, fdoc, hdoc, cdocs=None,
+                          uid=None):
+        """
+        Get an instance of a MessageClass initialized with a MessageWrapper
+        that contains the passed part documents.
+
+        This is not the recommended way of obtaining a message, unless you know
+        how to take care of ensuring the internal consistency between the part
+        documents, or unless you are glueing together the part documents that
+        have been previously generated by `get_msg_from_string`.
+
+        :param MessageClass: any Message class that can be initialized passing
+                             an instance of an IMessageWrapper implementor.
+        :type MessageClass: type
+        :param fdoc: a dictionary containing values from which a
+                     FlagsDocWrapper can be initialized
+        :type fdoc: dict
+        :param hdoc: a dictionary containing values from which a
+                     HeaderDocWrapper can be initialized
+        :type hdoc: dict
+        :param cdocs: None, or a dictionary mapping integers (1-indexed) to
+                      dicts from where a ContentDocWrapper can be initialized.
+        :type cdocs: dict, or None
+
+        :rtype: MessageClass instance.
+        """
+        assert(MessageClass is not None)
+        return MessageClass(MessageWrapper(mdoc, fdoc, hdoc, cdocs), uid=uid)
+
+    def get_msg_from_mdoc_id(self, MessageClass, store, mdoc_id,
+                             uid=None, get_cdocs=False):
+
+        def wrap_meta_doc(doc):
+            cls = MetaMsgDocWrapper
+            return cls(doc_id=doc.doc_id, **doc.content)
+
+        def get_part_docs_from_mdoc_wrapper(wrapper):
+            d_docs = []
+            d_docs.append(store.get_doc(wrapper.fdoc))
+            d_docs.append(store.get_doc(wrapper.hdoc))
+            for cdoc in wrapper.cdocs:
+                d_docs.append(store.get_doc(cdoc))
+
+            def add_mdoc(doc_list):
+                return [wrapper.serialize()] + doc_list
+
+            d = defer.gatherResults(d_docs)
+            d.addCallback(add_mdoc)
+            return d
+
+        def get_parts_doc_from_mdoc_id():
+            mbox = re.findall(constants.METAMSGID_MBOX_RE, mdoc_id)[0]
+            chash = re.findall(constants.METAMSGID_CHASH_RE, mdoc_id)[0]
+
+            def _get_fdoc_id_from_mdoc_id():
+                return constants.FDOCID.format(mbox_uuid=mbox, chash=chash)
+
+            def _get_hdoc_id_from_mdoc_id():
+                return constants.HDOCID.format(mbox_uuid=mbox, chash=chash)
+
+            d_docs = []
+            fdoc_id = _get_fdoc_id_from_mdoc_id()
+            hdoc_id = _get_hdoc_id_from_mdoc_id()
+
+            d_docs.append(store.get_doc(mdoc_id))
+            d_docs.append(store.get_doc(fdoc_id))
+            d_docs.append(store.get_doc(hdoc_id))
+
+            d = defer.gatherResults(d_docs)
+            return d
+
+        if get_cdocs:
+            d = store.get_doc(mdoc_id)
+            d.addCallback(wrap_meta_doc)
+            d.addCallback(get_part_docs_from_mdoc_wrapper)
+        else:
+            d = get_parts_doc_from_mdoc_id()
+
+        d.addCallback(self._get_msg_from_variable_doc_list,
+                      msg_class=MessageClass, uid=uid)
+        return d
+
+    def _get_msg_from_variable_doc_list(self, doc_list, msg_class, uid=None):
+        if len(doc_list) == 3:
+            mdoc, fdoc, hdoc = doc_list
+            cdocs = None
+        elif len(doc_list) > 3:
+            # XXX is this case used?
+            mdoc, fdoc, hdoc = doc_list[:3]
+            cdocs = dict(enumerate(doc_list[3:], 1))
+        return self.get_msg_from_docs(
+            msg_class, mdoc, fdoc, hdoc, cdocs, uid=uid)
+
+    def get_flags_from_mdoc_id(self, store, mdoc_id):
+        """
+        # XXX stuff here...
+        """
+        mbox = re.findall(constants.METAMSGID_MBOX_RE, mdoc_id)[0]
+        chash = re.findall(constants.METAMSGID_CHASH_RE, mdoc_id)[0]
+
+        def _get_fdoc_id_from_mdoc_id():
+            return constants.FDOCID.format(mbox_uuid=mbox, chash=chash)
+
+        fdoc_id = _get_fdoc_id_from_mdoc_id()
+
+        def wrap_fdoc(doc):
+            if not doc:
+                return
+            cls = FlagsDocWrapper
+            return cls(doc_id=doc.doc_id, **doc.content)
+
+        def get_flags(fdoc_wrapper):
+            if not fdoc_wrapper:
+                return []
+            return fdoc_wrapper.get_flags()
+
+        d = store.get_doc(fdoc_id)
+        d.addCallback(wrap_fdoc)
+        d.addCallback(get_flags)
+        return d
+
+    def create_msg(self, store, msg):
+        """
+        :param store: an instance of soledad, or anything that behaves alike
+        :param msg: a Message object.
+
+        :return: a Deferred that is fired when all the underlying documents
+                 have been created.
+        :rtype: defer.Deferred
+        """
+        wrapper = msg.get_wrapper()
+        return wrapper.create(store)
+
+    def update_msg(self, store, msg):
+        """
+        :param msg: a Message object.
+        :param store: an instance of soledad, or anything that behaves alike
+        :return: a Deferred that is fired when all the underlying documents
+                 have been updated (actually, it's only the fdoc that's allowed
+                 to update).
+        :rtype: defer.Deferred
+        """
+        wrapper = msg.get_wrapper()
+        return wrapper.update(store)
+
+    # batch deletion
+
+    def del_all_flagged_messages(self, store, mbox_uuid):
+        """
+        Delete all messages flagged as deleted.
+        """
+        def err(failure):
+            log.err(failure)
+
+        def delete_fdoc_and_mdoc_flagged(fdocs):
+            # low level here, not using the wrappers...
+            # get meta doc ids from the flag doc ids
+            fdoc_ids = [doc.doc_id for doc in fdocs]
+            mdoc_ids = map(lambda s: "M" + s[1:], fdoc_ids)
+
+            def delete_all_docs(mdocs, fdocs):
+                mdocs = list(mdocs)
+                doc_ids = [m.doc_id for m in mdocs]
+                _d = []
+                docs = mdocs + fdocs
+                for doc in docs:
+                    _d.append(store.delete_doc(doc))
+                d = defer.gatherResults(_d)
+                # return the mdocs ids only
+                d.addCallback(lambda _: doc_ids)
+                return d
+
+            d = store.get_docs(mdoc_ids)
+            d.addCallback(delete_all_docs, fdocs)
+            d.addErrback(err)
+            return d
+
+        type_ = FlagsDocWrapper.model.type_
+        uuid = mbox_uuid.replace('-', '_')
+        deleted_index = indexes.TYPE_MBOX_DEL_IDX
+
+        d = store.get_from_index(deleted_index, type_, uuid, "1")
+        d.addCallbacks(delete_fdoc_and_mdoc_flagged, err)
+        return d
+
+    # count messages
+
+    def get_count_unseen(self, store, mbox_uuid):
+        """
+        Get the number of unseen messages for a given mailbox.
+
+        :param store: instance of Soledad.
+        :param mbox_uuid: the uuid for this mailbox.
+        :rtype: int
+        """
+        type_ = FlagsDocWrapper.model.type_
+        uuid = mbox_uuid.replace('-', '_')
+
+        unseen_index = indexes.TYPE_MBOX_SEEN_IDX
+
+        d = store.get_count_from_index(unseen_index, type_, uuid, "0")
+        d.addErrback(self._errback)
+        return d
+
+    def get_count_recent(self, store, mbox_uuid):
+        """
+        Get the number of recent messages for a given mailbox.
+
+        :param store: instance of Soledad.
+        :param mbox_uuid: the uuid for this mailbox.
+        :rtype: int
+        """
+        type_ = FlagsDocWrapper.model.type_
+        uuid = mbox_uuid.replace('-', '_')
+
+        recent_index = indexes.TYPE_MBOX_RECENT_IDX
+
+        d = store.get_count_from_index(recent_index, type_, uuid, "1")
+        d.addErrback(self._errback)
+        return d
+
+    # search api
+
+    def get_mdoc_id_from_msgid(self, store, mbox_uuid, msgid):
+        """
+        Get the UID for a message with the passed msgid (the one in the headers
+        msg-id).
+        This is used by the MUA to retrieve the recently saved draft.
+        """
+        type_ = HeaderDocWrapper.model.type_
+        uuid = mbox_uuid.replace('-', '_')
+
+        msgid_index = indexes.TYPE_MSGID_IDX
+
+        def get_mdoc_id(hdoc):
+            if not hdoc:
+                log.msg("Could not find a HDOC with MSGID %s" % msgid)
+                return None
+            hdoc = hdoc[0]
+            mdoc_id = hdoc.doc_id.replace("H-", "M-%s-" % uuid)
+            return mdoc_id
+
+        d = store.get_from_index(msgid_index, type_, msgid)
+        d.addCallback(get_mdoc_id)
+        return d
+
+    # Mailbox handling
+
+    def get_or_create_mbox(self, store, name):
+        """
+        Get the mailbox with the given name, or create one if it does not
+        exist.
+
+        :param store: instance of Soledad
+        :param name: the name of the mailbox
+        :type name: str
+        """
+        index = indexes.TYPE_MBOX_IDX
+        mbox = normalize_mailbox(name)
+        return MailboxWrapper.get_or_create(store, index, mbox)
+
+    def update_mbox(self, store, mbox_wrapper):
+        """
+        Update the documents for a given mailbox.
+        :param mbox_wrapper: MailboxWrapper instance
+        :type mbox_wrapper: MailboxWrapper
+        :return: a Deferred that will be fired when the mailbox documents
+                 have been updated.
+        :rtype: defer.Deferred
+        """
+        leap_assert_type(mbox_wrapper, SoledadDocumentWrapper)
+        return mbox_wrapper.update(store)
+
+    def delete_mbox(self, store, mbox_wrapper):
+        leap_assert_type(mbox_wrapper, SoledadDocumentWrapper)
+        return mbox_wrapper.delete(store)
+
+    def get_all_mboxes(self, store):
+        """
+        Retrieve a list with wrappers for all the mailboxes.
+
+        :return: a deferred that will be fired with a list of all the
+                 MailboxWrappers found.
+        :rtype: defer.Deferred
+        """
+        return MailboxWrapper.get_all(store)
+
+    def _errback(self, failure):
+        log.err(failure)
+
+
+def _split_into_parts(raw):
+    # TODO signal that we can delete the original message!-----
+    # when all the processing is done.
+    # TODO add the linked-from info !
+    # TODO add reference to the original message?
+    # TODO populate Default FLAGS/TAGS (unseen?)
+    # TODO seed propely the content_docs with defaults??
+
+    msg, parts, chash, multi = _parse_msg(raw)
+    size = len(msg.as_string())
+
+    body_phash = walk.get_body_phash(msg)
+
+    parts_map = walk.walk_msg_tree(parts, body_phash=body_phash)
+    cdocs_list = list(walk.get_raw_docs(msg, parts))
+    cdocs_phashes = [c['phash'] for c in cdocs_list]
+
+    mdoc = _build_meta_doc(chash, cdocs_phashes)
+    fdoc = _build_flags_doc(chash, size, multi)
+    hdoc = _build_headers_doc(msg, chash, body_phash, parts_map)
+
+    # The MessageWrapper expects a dict, one-indexed
+    cdocs = dict(enumerate(cdocs_list, 1))
+
+    return mdoc, fdoc, hdoc, cdocs
+
+
+def _parse_msg(raw):
+    msg = message_from_string(raw)
+    parts = walk.get_parts(msg)
+    chash = sha256.SHA256(raw).hexdigest()
+    multi = msg.is_multipart()
+    return msg, parts, chash, multi
+
+
+def _build_meta_doc(chash, cdocs_phashes):
+    _mdoc = MetaMsgDocWrapper()
+    # FIXME passing the inbox name because we don't have the uuid at this
+    # point.
+
+    _mdoc.fdoc = constants.FDOCID.format(mbox_uuid=INBOX_NAME, chash=chash)
+    _mdoc.hdoc = constants.HDOCID.format(chash=chash)
+    _mdoc.cdocs = [constants.CDOCID.format(phash=p) for p in cdocs_phashes]
+    return _mdoc.serialize()
+
+
+def _build_flags_doc(chash, size, multi):
+    _fdoc = FlagsDocWrapper(chash=chash, size=size, multi=multi)
+    return _fdoc.serialize()
+
+
+def _build_headers_doc(msg, chash, body_phash, parts_map):
+    """
+    Assemble a headers document from the original parsed message, the
+    content-hash, and the parts map.
+
+    It takes into account possibly repeated headers.
+    """
+    headers = defaultdict(list)
+    for k, v in msg.items():
+        headers[k].append(v)
+    # "fix" for repeated headers (as in "Received:"
+    for k, v in headers.items():
+        newline = "\n%s: " % (k.lower(),)
+        headers[k] = newline.join(v)
+
+    lower_headers = lowerdict(dict(headers))
+    msgid = first(_MSGID_RE.findall(
+        lower_headers.get('message-id', '')))
+
+    _hdoc = HeaderDocWrapper(
+        chash=chash, headers=headers, body=body_phash,
+        msgid=msgid)
+
+    def copy_attr(headers, key, doc):
+        if key in headers:
+            setattr(doc, key, headers[key])
+
+    copy_attr(lower_headers, "subject", _hdoc)
+    copy_attr(lower_headers, "date", _hdoc)
+
+    hdoc = _hdoc.serialize()
+    # add parts map to header doc
+    # (body, multi, part_map)
+    for key in parts_map:
+        hdoc[key] = parts_map[key]
+    return stringify_parts_map(hdoc)
diff --git a/src/leap/mail/adaptors/soledad_indexes.py b/src/leap/mail/adaptors/soledad_indexes.py
new file mode 100644
index 0000000..eec7d28
--- /dev/null
+++ b/src/leap/mail/adaptors/soledad_indexes.py
@@ -0,0 +1,106 @@
+# -*- coding: utf-8 -*-
+# soledad_indexes.py
+# Copyright (C) 2013, 2014 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+Soledad Indexes for Mail Documents.
+"""
+
+# TODO
+# [ ] hide most of the constants here
+
+# Document Type, for indexing
+
+TYPE = "type"
+MBOX = "mbox"
+MBOX_UUID = "mbox_uuid"
+FLAGS = "flags"
+HEADERS = "head"
+CONTENT = "cnt"
+RECENT = "rct"
+HDOCS_SET = "hdocset"
+
+INCOMING_KEY = "incoming"
+ERROR_DECRYPTING_KEY = "errdecr"
+
+# indexing keys
+CONTENT_HASH = "chash"
+PAYLOAD_HASH = "phash"
+MSGID = "msgid"
+UID = "uid"
+
+
+# Index  types
+# --------------
+
+TYPE_IDX = 'by-type'
+TYPE_MBOX_IDX = 'by-type-and-mbox'
+TYPE_MBOX_UUID_IDX = 'by-type-and-mbox-uuid'
+TYPE_SUBS_IDX = 'by-type-and-subscribed'
+TYPE_MSGID_IDX = 'by-type-and-message-id'
+TYPE_MBOX_SEEN_IDX = 'by-type-and-mbox-and-seen'
+TYPE_MBOX_RECENT_IDX = 'by-type-and-mbox-and-recent'
+TYPE_MBOX_DEL_IDX = 'by-type-and-mbox-and-deleted'
+TYPE_MBOX_C_HASH_IDX = 'by-type-and-mbox-and-contenthash'
+TYPE_C_HASH_IDX = 'by-type-and-contenthash'
+TYPE_C_HASH_PART_IDX = 'by-type-and-contenthash-and-partnumber'
+TYPE_P_HASH_IDX = 'by-type-and-payloadhash'
+
+# Soledad index for incoming mail, without decrypting errors.
+# and the backward-compatible index, will be deprecated at 0.7
+JUST_MAIL_IDX = "just-mail"
+JUST_MAIL_COMPAT_IDX = "just-mail-compat"
+
+
+# TODO
+# it would be nice to measure the cost of indexing
+# by many fields.
+
+# TODO
+# make the indexes dict more readable!
+
+MAIL_INDEXES = {
+    # generic
+    TYPE_IDX: [TYPE],
+    TYPE_MBOX_IDX: [TYPE, MBOX],
+    TYPE_MBOX_UUID_IDX: [TYPE, MBOX_UUID],
+
+    # XXX deprecate 0.4.0
+    # TYPE_MBOX_UID_IDX: [TYPE, MBOX, UID],
+
+    # mailboxes
+    TYPE_SUBS_IDX: [TYPE, 'bool(subscribed)'],
+
+    # fdocs uniqueness
+    TYPE_MBOX_C_HASH_IDX: [TYPE, MBOX, CONTENT_HASH],
+
+    # headers doc - search by msgid.
+    TYPE_MSGID_IDX: [TYPE, MSGID],
+
+    # content, headers doc
+    TYPE_C_HASH_IDX: [TYPE, CONTENT_HASH],
+
+    # attachment payload dedup
+    TYPE_P_HASH_IDX: [TYPE, PAYLOAD_HASH],
+
+    # messages
+    TYPE_MBOX_SEEN_IDX: [TYPE, MBOX_UUID, 'bool(seen)'],
+    TYPE_MBOX_RECENT_IDX: [TYPE, MBOX_UUID, 'bool(recent)'],
+    TYPE_MBOX_DEL_IDX: [TYPE, MBOX_UUID, 'bool(deleted)'],
+
+    # incoming queue
+    JUST_MAIL_IDX: ["bool(%s)" % (INCOMING_KEY,),
+                    "bool(%s)" % (ERROR_DECRYPTING_KEY,)],
+}
diff --git a/src/leap/mail/adaptors/tests/__init__.py b/src/leap/mail/adaptors/tests/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/src/leap/mail/adaptors/tests/__init__.py
diff --git a/src/leap/mail/adaptors/tests/rfc822.message b/src/leap/mail/adaptors/tests/rfc822.message
new file mode 120000
index 0000000..b19cc28
--- /dev/null
+++ b/src/leap/mail/adaptors/tests/rfc822.message
@@ -0,0 +1 @@
+../../tests/rfc822.message
\ No newline at end of file
diff --git a/src/leap/mail/adaptors/tests/test_models.py b/src/leap/mail/adaptors/tests/test_models.py
new file mode 100644
index 0000000..b82cfad
--- /dev/null
+++ b/src/leap/mail/adaptors/tests/test_models.py
@@ -0,0 +1,106 @@
+# -*- coding: utf-8 -*-
+# test_models.py
+# Copyright (C) 2014 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+Tests for the leap.mail.adaptors.models module.
+"""
+from twisted.trial import unittest
+
+from leap.mail.adaptors import models
+
+
+class SerializableModelsTestCase(unittest.TestCase):
+
+    def test_good_serialized_model(self):
+
+        class M(models.SerializableModel):
+            foo = 42
+            bar = 33
+            baaz_ = None
+            _nope = 0
+            __nope = 0
+
+            def not_today(self):
+                pass
+
+            class IgnoreMe(object):
+                pass
+
+            def killmeplease(x):
+                return x
+
+        serialized = M.serialize()
+        expected = {'foo': 42, 'bar': 33, 'baaz': None}
+        self.assertEqual(serialized, expected)
+
+
+class DocumentWrapperTestCase(unittest.TestCase):
+
+    def test_wrapper_defaults(self):
+
+        class Wrapper(models.DocumentWrapper):
+            class model(models.SerializableModel):
+                foo = 42
+                bar = 11
+
+        wrapper = Wrapper()
+        wrapper._ignored = True
+        serialized = wrapper.serialize()
+        expected = {'foo': 42, 'bar': 11}
+        self.assertEqual(serialized, expected)
+
+    def test_initialized_wrapper(self):
+
+        class Wrapper(models.DocumentWrapper):
+            class model(models.SerializableModel):
+                foo = 42
+                bar_ = 11
+
+        wrapper = Wrapper(foo=0, bar=-1)
+        serialized = wrapper.serialize()
+        expected = {'foo': 0, 'bar': -1}
+        self.assertEqual(serialized, expected)
+
+        wrapper.foo = 23
+        serialized = wrapper.serialize()
+        expected = {'foo': 23, 'bar': -1}
+        self.assertEqual(serialized, expected)
+
+        wrapper = Wrapper(foo=0)
+        serialized = wrapper.serialize()
+        expected = {'foo': 0, 'bar': 11}
+        self.assertEqual(serialized, expected)
+
+    def test_invalid_initialized_wrapper(self):
+
+        class Wrapper(models.DocumentWrapper):
+            class model(models.SerializableModel):
+                foo = 42
+
+        def getwrapper():
+            return Wrapper(bar=1)
+        self.assertRaises(RuntimeError, getwrapper)
+
+    def test_no_model_wrapper(self):
+
+        class Wrapper(models.DocumentWrapper):
+            pass
+
+        def getwrapper():
+            w = Wrapper()
+            w.foo = None
+
+        self.assertRaises(RuntimeError, getwrapper)
diff --git a/src/leap/mail/adaptors/tests/test_soledad_adaptor.py b/src/leap/mail/adaptors/tests/test_soledad_adaptor.py
new file mode 100644
index 0000000..61e387c
--- /dev/null
+++ b/src/leap/mail/adaptors/tests/test_soledad_adaptor.py
@@ -0,0 +1,529 @@
+# -*- coding: utf-8 -*-
+# test_soledad_adaptor.py
+# Copyright (C) 2014 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+Tests for the Soledad Adaptor module - leap.mail.adaptors.soledad
+"""
+import os
+from functools import partial
+
+from twisted.internet import defer
+
+from leap.mail.adaptors import models
+from leap.mail.adaptors.soledad import SoledadDocumentWrapper
+from leap.mail.adaptors.soledad import SoledadIndexMixin
+from leap.mail.adaptors.soledad import SoledadMailAdaptor
+from leap.mail.tests.common import SoledadTestMixin
+
+from email.MIMEMultipart import MIMEMultipart
+from email.mime.text import MIMEText
+
+# DEBUG
+# import logging
+# logging.basicConfig(level=logging.DEBUG)
+
+
+class CounterWrapper(SoledadDocumentWrapper):
+    class model(models.SerializableModel):
+        counter = 0
+        flag = None
+
+
+class CharacterWrapper(SoledadDocumentWrapper):
+    class model(models.SerializableModel):
+        name = ""
+        age = 20
+
+
+class ActorWrapper(SoledadDocumentWrapper):
+    class model(models.SerializableModel):
+        type_ = "actor"
+        name = None
+
+        class __meta__(object):
+            index = "name"
+            list_index = ("by-type", "type_")
+
+
+class TestAdaptor(SoledadIndexMixin):
+    indexes = {'by-name': ['name'],
+               'by-type-and-name': ['type', 'name'],
+               'by-type': ['type']}
+
+
+class SoledadDocWrapperTestCase(SoledadTestMixin):
+    """
+    Tests for the SoledadDocumentWrapper.
+    """
+    def assert_num_docs(self, num, docs):
+        self.assertEqual(len(docs[1]), num)
+
+    def test_create_single(self):
+
+        store = self._soledad
+        wrapper = CounterWrapper()
+
+        def assert_one_doc(docs):
+            self.assertEqual(docs[0], 1)
+
+        d = wrapper.create(store)
+        d.addCallback(lambda _: store.get_all_docs())
+        d.addCallback(assert_one_doc)
+        return d
+
+    def test_create_many(self):
+
+        store = self._soledad
+        w1 = CounterWrapper()
+        w2 = CounterWrapper(counter=1)
+        w3 = CounterWrapper(counter=2)
+        w4 = CounterWrapper(counter=3)
+        w5 = CounterWrapper(counter=4)
+
+        d1 = [w1.create(store),
+              w2.create(store),
+              w3.create(store),
+              w4.create(store),
+              w5.create(store)]
+
+        d = defer.gatherResults(d1)
+        d.addCallback(lambda _: store.get_all_docs())
+        d.addCallback(partial(self.assert_num_docs, 5))
+        return d
+
+    def test_multiple_updates(self):
+
+        store = self._soledad
+        wrapper = CounterWrapper(counter=1)
+        MAX = 100
+
+        def assert_doc_id(doc):
+            self.assertTrue(wrapper._doc_id is not None)
+            return doc
+
+        def assert_counter_initial_ok(doc):
+            self.assertEqual(wrapper.counter, 1)
+
+        def increment_counter(ignored):
+            d1 = []
+
+            def record_revision(revision):
+                rev = int(revision.split(':')[1])
+                self.results.append(rev)
+
+            for i in list(range(MAX)):
+                wrapper.counter += 1
+                wrapper.flag = i % 2 == 0
+                d = wrapper.update(store)
+                d.addCallback(record_revision)
+                d1.append(d)
+
+            return defer.gatherResults(d1)
+
+        def assert_counter_final_ok(doc):
+            self.assertEqual(doc.content['counter'], MAX + 1)
+            self.assertEqual(doc.content['flag'], False)
+
+        def assert_results_ordered_list(ignored):
+            self.assertEqual(self.results, sorted(range(2, MAX + 2)))
+
+        d = wrapper.create(store)
+        d.addCallback(assert_doc_id)
+        d.addCallback(assert_counter_initial_ok)
+        d.addCallback(increment_counter)
+        d.addCallback(lambda _: store.get_doc(wrapper._doc_id))
+        d.addCallback(assert_counter_final_ok)
+        d.addCallback(assert_results_ordered_list)
+        return d
+
+    def test_delete(self):
+        adaptor = TestAdaptor()
+        store = self._soledad
+
+        wrapper_list = []
+
+        def get_or_create_bob(ignored):
+            def add_to_list(wrapper):
+                wrapper_list.append(wrapper)
+                return wrapper
+            wrapper = CharacterWrapper.get_or_create(
+                store, 'by-name', 'bob')
+            wrapper.addCallback(add_to_list)
+            return wrapper
+
+        def delete_bob(ignored):
+            wrapper = wrapper_list[0]
+            return wrapper.delete(store)
+
+        d = adaptor.initialize_store(store)
+        d.addCallback(lambda _: store.get_all_docs())
+        d.addCallback(partial(self.assert_num_docs, 0))
+
+        # this should create bob document
+        d.addCallback(get_or_create_bob)
+        d.addCallback(lambda _: store.get_all_docs())
+        d.addCallback(partial(self.assert_num_docs, 1))
+
+        d.addCallback(delete_bob)
+        d.addCallback(lambda _: store.get_all_docs())
+        d.addCallback(partial(self.assert_num_docs, 0))
+        return d
+
+    def test_get_or_create(self):
+        adaptor = TestAdaptor()
+        store = self._soledad
+
+        def get_or_create_bob(ignored):
+            wrapper = CharacterWrapper.get_or_create(
+                store, 'by-name', 'bob')
+            return wrapper
+
+        d = adaptor.initialize_store(store)
+        d.addCallback(lambda _: store.get_all_docs())
+        d.addCallback(partial(self.assert_num_docs, 0))
+
+        # this should create bob document
+        d.addCallback(get_or_create_bob)
+        d.addCallback(lambda _: store.get_all_docs())
+        d.addCallback(partial(self.assert_num_docs, 1))
+
+        # this should get us bob document
+        d.addCallback(get_or_create_bob)
+        d.addCallback(lambda _: store.get_all_docs())
+        d.addCallback(partial(self.assert_num_docs, 1))
+        return d
+
+    def test_get_or_create_multi_index(self):
+        adaptor = TestAdaptor()
+        store = self._soledad
+
+        def get_or_create_actor_harry(ignored):
+            wrapper = ActorWrapper.get_or_create(
+                store, 'by-type-and-name', 'harrison')
+            return wrapper
+
+        def create_director_harry(ignored):
+            wrapper = ActorWrapper(name="harrison", type="director")
+            return wrapper.create(store)
+
+        d = adaptor.initialize_store(store)
+        d.addCallback(lambda _: store.get_all_docs())
+        d.addCallback(partial(self.assert_num_docs, 0))
+
+        # this should create harrison document
+        d.addCallback(get_or_create_actor_harry)
+        d.addCallback(lambda _: store.get_all_docs())
+        d.addCallback(partial(self.assert_num_docs, 1))
+
+        # this should get us harrison document
+        d.addCallback(get_or_create_actor_harry)
+        d.addCallback(lambda _: store.get_all_docs())
+        d.addCallback(partial(self.assert_num_docs, 1))
+
+        # create director harry, should create new doc
+        d.addCallback(create_director_harry)
+        d.addCallback(lambda _: store.get_all_docs())
+        d.addCallback(partial(self.assert_num_docs, 2))
+
+        # this should get us harrison document, still 2 docs
+        d.addCallback(get_or_create_actor_harry)
+        d.addCallback(lambda _: store.get_all_docs())
+        d.addCallback(partial(self.assert_num_docs, 2))
+        return d
+
+    def test_get_all(self):
+        adaptor = TestAdaptor()
+        store = self._soledad
+        actor_names = ["harry", "carrie", "mark", "david"]
+
+        def create_some_actors(ignored):
+            deferreds = []
+            for name in actor_names:
+                dw = ActorWrapper.get_or_create(
+                    store, 'by-type-and-name', name)
+                deferreds.append(dw)
+            return defer.gatherResults(deferreds)
+
+        d = adaptor.initialize_store(store)
+        d.addCallback(lambda _: store.get_all_docs())
+        d.addCallback(partial(self.assert_num_docs, 0))
+
+        d.addCallback(create_some_actors)
+
+        d.addCallback(lambda _: store.get_all_docs())
+        d.addCallback(partial(self.assert_num_docs, 4))
+
+        def assert_actor_list_is_expected(res):
+            got = set([actor.name for actor in res])
+            expected = set(actor_names)
+            self.assertEqual(got, expected)
+
+        d.addCallback(lambda _: ActorWrapper.get_all(store))
+        d.addCallback(assert_actor_list_is_expected)
+        return d
+
+HERE = os.path.split(os.path.abspath(__file__))[0]
+
+
+class TestMessageClass(object):
+    def __init__(self, wrapper, uid):
+        self.wrapper = wrapper
+        self.uid = uid
+
+    def get_wrapper(self):
+        return self.wrapper
+
+
+class SoledadMailAdaptorTestCase(SoledadTestMixin):
+    """
+    Tests for the SoledadMailAdaptor.
+    """
+
+    def get_adaptor(self):
+        adaptor = SoledadMailAdaptor()
+        adaptor.store = self._soledad
+        return adaptor
+
+    def assert_num_docs(self, num, docs):
+        self.assertEqual(len(docs[1]), num)
+
+    def test_mail_adaptor_init(self):
+        adaptor = self.get_adaptor()
+        self.assertTrue(isinstance(adaptor.indexes, dict))
+        self.assertTrue(len(adaptor.indexes) != 0)
+
+    # Messages
+
+    def test_get_msg_from_string(self):
+        adaptor = self.get_adaptor()
+
+        with open(os.path.join(HERE, "rfc822.message")) as f:
+            raw = f.read()
+
+        msg = adaptor.get_msg_from_string(TestMessageClass, raw)
+
+        chash = ("D27B2771C0DCCDCB468EE65A4540438"
+                 "09DBD11588E87E951545BE0CBC321C308")
+        phash = ("64934534C1C80E0D4FA04BE1CCBA104"
+                 "F07BCA5F469C86E2C0ABE1D41310B7299")
+        subject = ("[Twisted-commits] rebuild now works on "
+                   "python versions from 2.2.0 and up.")
+        self.assertTrue(msg.wrapper.fdoc is not None)
+        self.assertTrue(msg.wrapper.hdoc is not None)
+        self.assertTrue(msg.wrapper.cdocs is not None)
+        self.assertEquals(len(msg.wrapper.cdocs), 1)
+        self.assertEquals(msg.wrapper.fdoc.chash, chash)
+        self.assertEquals(msg.wrapper.fdoc.size, 3837)
+        self.assertEquals(msg.wrapper.hdoc.chash, chash)
+        self.assertEqual(dict(msg.wrapper.hdoc.headers)['Subject'],
+                         subject)
+        self.assertEqual(msg.wrapper.hdoc.subject, subject)
+        self.assertEqual(msg.wrapper.cdocs[1].phash, phash)
+
+    def test_get_msg_from_string_multipart(self):
+        msg = MIMEMultipart()
+        msg['Subject'] = 'Test multipart mail'
+        msg.attach(MIMEText(u'a utf8 message', _charset='utf-8'))
+        adaptor = self.get_adaptor()
+
+        msg = adaptor.get_msg_from_string(TestMessageClass, msg.as_string())
+
+        self.assertEqual(
+            'base64', msg.wrapper.cdocs[1].content_transfer_encoding)
+        self.assertEqual(
+            'text/plain; charset="utf-8"', msg.wrapper.cdocs[1].content_type)
+        self.assertEqual(
+            'YSB1dGY4IG1lc3NhZ2U=\n', msg.wrapper.cdocs[1].raw)
+
+    def test_get_msg_from_docs(self):
+        adaptor = self.get_adaptor()
+        mdoc = dict(
+            fdoc="F-Foobox-deadbeef",
+            hdoc="H-deadbeef",
+            cdocs=["C-deadabad"])
+        fdoc = dict(
+            mbox_uuid="Foobox",
+            flags=('\Seen', '\Nice'),
+            tags=('Personal', 'TODO'),
+            seen=False, deleted=False,
+            recent=False, multi=False)
+        hdoc = dict(
+            chash="deadbeef",
+            subject="Test Msg")
+        cdocs = {
+            1: dict(
+                raw='This is a test message')}
+
+        msg = adaptor.get_msg_from_docs(
+            TestMessageClass, mdoc, fdoc, hdoc, cdocs=cdocs)
+        self.assertEqual(msg.wrapper.fdoc.flags,
+                         ('\Seen', '\Nice'))
+        self.assertEqual(msg.wrapper.fdoc.tags,
+                         ('Personal', 'TODO'))
+        self.assertEqual(msg.wrapper.fdoc.mbox_uuid, "Foobox")
+        self.assertEqual(msg.wrapper.hdoc.multi, False)
+        self.assertEqual(msg.wrapper.hdoc.subject,
+                         "Test Msg")
+        self.assertEqual(msg.wrapper.cdocs[1].raw,
+                         "This is a test message")
+
+    def test_get_msg_from_metamsg_doc_id(self):
+        # TODO complete-me!
+        pass
+
+    test_get_msg_from_metamsg_doc_id.skip = "Not yet implemented"
+
+    def test_create_msg(self):
+        adaptor = self.get_adaptor()
+
+        with open(os.path.join(HERE, "rfc822.message")) as f:
+            raw = f.read()
+        msg = adaptor.get_msg_from_string(TestMessageClass, raw)
+
+        def check_create_result(created):
+            # that's one mdoc, one hdoc, one fdoc, one cdoc
+            self.assertEqual(len(created), 4)
+            for doc in created:
+                self.assertTrue(
+                    doc.__class__.__name__,
+                    "SoledadDocument")
+
+        d = adaptor.create_msg(adaptor.store, msg)
+        d.addCallback(check_create_result)
+        return d
+
+    def test_update_msg(self):
+        adaptor = self.get_adaptor()
+        with open(os.path.join(HERE, "rfc822.message")) as f:
+            raw = f.read()
+
+        def assert_msg_has_doc_id(ignored, msg):
+            wrapper = msg.get_wrapper()
+            self.assertTrue(wrapper.fdoc.doc_id is not None)
+
+        def assert_msg_has_no_flags(ignored, msg):
+            wrapper = msg.get_wrapper()
+            self.assertEqual(wrapper.fdoc.flags, [])
+
+        def update_msg_flags(ignored, msg):
+            wrapper = msg.get_wrapper()
+            wrapper.fdoc.flags = ["This", "That"]
+            return wrapper.update(adaptor.store)
+
+        def assert_msg_has_flags(ignored, msg):
+            wrapper = msg.get_wrapper()
+            self.assertEqual(wrapper.fdoc.flags, ["This", "That"])
+
+        def get_fdoc_and_check_flags(ignored):
+            def assert_doc_has_flags(doc):
+                self.assertEqual(doc.content['flags'],
+                                 ['This', 'That'])
+            wrapper = msg.get_wrapper()
+            d = adaptor.store.get_doc(wrapper.fdoc.doc_id)
+            d.addCallback(assert_doc_has_flags)
+            return d
+
+        msg = adaptor.get_msg_from_string(TestMessageClass, raw)
+        d = adaptor.create_msg(adaptor.store, msg)
+        d.addCallback(lambda _: adaptor.store.get_all_docs())
+        d.addCallback(partial(self.assert_num_docs, 4))
+        d.addCallback(assert_msg_has_doc_id, msg)
+        d.addCallback(assert_msg_has_no_flags, msg)
+
+        # update it!
+        d.addCallback(update_msg_flags, msg)
+        d.addCallback(assert_msg_has_flags, msg)
+        d.addCallback(get_fdoc_and_check_flags)
+        return d
+
+    # Mailboxes
+
+    def test_get_or_create_mbox(self):
+        adaptor = self.get_adaptor()
+
+        def get_or_create_mbox(ignored):
+            d = adaptor.get_or_create_mbox(adaptor.store, "Trash")
+            return d
+
+        def assert_good_doc(mbox_wrapper):
+            self.assertTrue(mbox_wrapper.doc_id is not None)
+            self.assertEqual(mbox_wrapper.mbox, "Trash")
+            self.assertEqual(mbox_wrapper.type, "mbox")
+            self.assertEqual(mbox_wrapper.closed, False)
+            self.assertEqual(mbox_wrapper.subscribed, False)
+
+        d = adaptor.initialize_store(adaptor.store)
+        d.addCallback(get_or_create_mbox)
+        d.addCallback(assert_good_doc)
+        d.addCallback(lambda _: adaptor.store.get_all_docs())
+        d.addCallback(partial(self.assert_num_docs, 1))
+        return d
+
+    def test_update_mbox(self):
+        adaptor = self.get_adaptor()
+
+        wrapper_ref = []
+
+        def get_or_create_mbox(ignored):
+            d = adaptor.get_or_create_mbox(adaptor.store, "Trash")
+            return d
+
+        def update_wrapper(wrapper, wrapper_ref):
+            wrapper_ref.append(wrapper)
+            wrapper.subscribed = True
+            wrapper.closed = True
+            d = adaptor.update_mbox(adaptor.store, wrapper)
+            return d
+
+        def get_mbox_doc_and_check_flags(res, wrapper_ref):
+            wrapper = wrapper_ref[0]
+
+            def assert_doc_has_flags(doc):
+                self.assertEqual(doc.content['subscribed'], True)
+                self.assertEqual(doc.content['closed'], True)
+            d = adaptor.store.get_doc(wrapper.doc_id)
+            d.addCallback(assert_doc_has_flags)
+            return d
+
+        d = adaptor.initialize_store(adaptor.store)
+        d.addCallback(get_or_create_mbox)
+        d.addCallback(update_wrapper, wrapper_ref)
+        d.addCallback(get_mbox_doc_and_check_flags, wrapper_ref)
+        return d
+
+    def test_get_all_mboxes(self):
+        adaptor = self.get_adaptor()
+        mboxes = ("Sent", "Trash", "Personal", "ListFoo")
+
+        def get_or_create_mboxes(ignored):
+            d = []
+            for mbox in mboxes:
+                d.append(adaptor.get_or_create_mbox(
+                    adaptor.store, mbox))
+            return defer.gatherResults(d)
+
+        def get_all_mboxes(ignored):
+            return adaptor.get_all_mboxes(adaptor.store)
+
+        def assert_mboxes_match_expected(wrappers):
+            names = [m.mbox for m in wrappers]
+            self.assertEqual(set(names), set(mboxes))
+
+        d = adaptor.initialize_store(adaptor.store)
+        d.addCallback(get_or_create_mboxes)
+        d.addCallback(get_all_mboxes)
+        d.addCallback(assert_mboxes_match_expected)
+        return d
diff --git a/src/leap/mail/constants.py b/src/leap/mail/constants.py
new file mode 100644
index 0000000..4ef42cb
--- /dev/null
+++ b/src/leap/mail/constants.py
@@ -0,0 +1,52 @@
+# *- coding: utf-8 -*-
+# constants.py
+# Copyright (C) 2014 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+Constants for leap.mail.
+"""
+
+INBOX_NAME = "INBOX"
+
+# Regular expressions for the identifiers to be used in the Message Data Layer.
+
+METAMSGID = "M-{mbox_uuid}-{chash}"
+METAMSGID_RE = "M\-{mbox_uuid}\-[0-9a-fA-F]+"
+METAMSGID_CHASH_RE = "M\-\w+\-([0-9a-fA-F]+)"
+METAMSGID_MBOX_RE = "M\-(\w+)\-[0-9a-fA-F]+"
+
+FDOCID = "F-{mbox_uuid}-{chash}"
+FDOCID_RE = "F\-{mbox_uuid}\-[0-9a-fA-F]+"
+FDOCID_CHASH_RE = "F\-\w+\-([0-9a-fA-F]+)"
+
+HDOCID = "H-{chash}"
+HDOCID_RE = "H\-[0-9a-fA-F]+"
+
+CDOCID = "C-{phash}"
+CDOCID_RE = "C\-[0-9a-fA-F]+"
+
+
+class MessageFlags(object):
+    """
+    Flags used in Message and Mailbox.
+    """
+    SEEN_FLAG = "\\Seen"
+    RECENT_FLAG = "\\Recent"
+    ANSWERED_FLAG = "\\Answered"
+    FLAGGED_FLAG = "\\Flagged"  # yo dawg
+    DELETED_FLAG = "\\Deleted"
+    DRAFT_FLAG = "\\Draft"
+    NOSELECT_FLAG = "\\Noselect"
+    LIST_FLAG = "List"  # is this OK? (no \. ie, no system flag)
diff --git a/src/leap/mail/imap/account.py b/src/leap/mail/imap/account.py
index 70ed13b..cc56fff 100644
--- a/src/leap/mail/imap/account.py
+++ b/src/leap/mail/imap/account.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 # account.py
-# Copyright (C) 2013 LEAP
+# Copyright (C) 2013-2015 LEAP
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -15,22 +15,23 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
-Soledad Backed Account.
+Soledad Backed IMAP Account.
 """
-import copy
 import logging
 import os
 import time
+from functools import partial
 
+from twisted.internet import defer
 from twisted.mail import imap4
 from twisted.python import log
 from zope.interface import implements
 
 from leap.common.check import leap_assert, leap_assert_type
-from leap.mail.imap.index import IndexedDB
-from leap.mail.imap.fields import WithMsgFields
-from leap.mail.imap.parser import MBoxParser
-from leap.mail.imap.mailbox import SoledadMailbox
+
+from leap.mail.constants import MessageFlags
+from leap.mail.mail import Account
+from leap.mail.imap.mailbox import IMAPMailbox, normalize_mailbox
 from leap.soledad.client import Soledad
 
 logger = logging.getLogger(__name__)
@@ -38,7 +39,6 @@ logger = logging.getLogger(__name__)
 PROFILE_CMD = os.environ.get('LEAP_PROFILE_IMAPCMD', False)
 
 if PROFILE_CMD:
-
     def _debugProfiling(result, cmdname, start):
         took = (time.time() - start) * 1000
         log.msg("CMD " + cmdname + " TOOK: " + str(took) + " msec")
@@ -46,107 +46,72 @@ if PROFILE_CMD:
 
 
 #######################################
-# Soledad Account
+# Soledad IMAP Account
 #######################################
 
-
-# TODO change name to LeapIMAPAccount, since we're using
-# the memstore.
-# IndexedDB should also not be here anymore.
-
-class SoledadBackedAccount(WithMsgFields, IndexedDB, MBoxParser):
+class IMAPAccount(object):
     """
-    An implementation of IAccount and INamespacePresenteer
+    An implementation of an imap4 Account
     that is backed by Soledad Encrypted Documents.
     """
 
     implements(imap4.IAccount, imap4.INamespacePresenter)
 
-    _soledad = None
     selected = None
-    closed = False
 
-    def __init__(self, account_name, soledad, memstore=None):
+    def __init__(self, user_id, store, d=defer.Deferred()):
         """
-        Creates a SoledadAccountIndex that keeps track of the mailboxes
-        and subscriptions handled by this account.
-
-        :param acct_name: The name of the account (user id).
-        :type acct_name: str
-
-        :param soledad: a Soledad instance.
-        :type soledad: Soledad
-        :param memstore: a MemoryStore instance.
-        :type memstore: MemoryStore
-        """
-        leap_assert(soledad, "Need a soledad instance to initialize")
-        leap_assert_type(soledad, Soledad)
-
-        # XXX SHOULD assert too that the name matches the user/uuid with which
-        # soledad has been initialized.
-
-        # XXX ??? why is this parsing mailbox name??? it's account...
-        # userid? homogenize.
-        self._account_name = self._parse_mailbox_name(account_name)
-        self._soledad = soledad
-        self._memstore = memstore
-
-        self.__mailboxes = set([])
-
-        self.initialize_db()
+        Keeps track of the mailboxes and subscriptions handled by this account.
 
-        # every user should have the right to an inbox folder
-        # at least, so let's make one!
-        self._load_mailboxes()
+        The account is not ready to be used, since the store needs to be
+        initialized and we also need to do some initialization routines.
+        You can either pass a deferred to this constructor, or use
+        `callWhenReady` method.
 
-        if not self.mailboxes:
-            self.addMailbox(self.INBOX_NAME)
+        :param user_id: The name of the account (user id, in the form
+                        user@provider).
+        :type user_id: str
 
-    def _get_empty_mailbox(self):
-        """
-        Returns an empty mailbox.
+        :param store: a Soledad instance.
+        :type store: Soledad
 
-        :rtype: dict
+        :param d: a deferred that will be fired with this IMAPAccount instance
+                  when the account is ready to be used.
+        :type d: defer.Deferred
         """
-        return copy.deepcopy(self.EMPTY_MBOX)
+        leap_assert(store, "Need a store instance to initialize")
+        leap_assert_type(store, Soledad)
 
-    def _get_mailbox_by_name(self, name):
-        """
-        Return an mbox document by name.
+        # TODO assert too that the name matches the user/uuid with which
+        # soledad has been initialized. Although afaik soledad doesn't know
+        # about user_id, only the client backend.
 
-        :param name: the name of the mailbox
-        :type name: str
+        self.user_id = user_id
+        self.account = Account(store, ready_cb=lambda: d.callback(self))
 
-        :rtype: SoledadDocument
+    def end_session(self):
         """
-        # XXX use soledadstore instead ...;
-        doc = self._soledad.get_from_index(
-            self.TYPE_MBOX_IDX, self.MBOX_KEY,
-            self._parse_mailbox_name(name))
-        return doc[0] if doc else None
+        Used to mark when the session has closed, and we should not allow any
+        more commands from the client.
 
-    @property
-    def mailboxes(self):
-        """
-        A list of the current mailboxes for this account.
-        :rtype: set
+        Right now it's called from the client backend.
         """
-        return sorted(self.__mailboxes)
-
-    def _load_mailboxes(self):
-        self.__mailboxes.update(
-            [doc.content[self.MBOX_KEY]
-             for doc in self._soledad.get_from_index(
-                 self.TYPE_IDX, self.MBOX_KEY)])
+        # TODO move its use to the service shutdown in leap.mail
+        self.account.end_session()
 
     @property
-    def subscriptions(self):
+    def session_ended(self):
+        return self.account.session_ended
+
+    def callWhenReady(self, cb, *args, **kw):
         """
-        A list of the current subscriptions for this account.
+        Execute callback when the account is ready to be used.
+        XXX note that this callback will be called with a first ignored
+        parameter.
         """
-        return [doc.content[self.MBOX_KEY]
-                for doc in self._soledad.get_from_index(
-                    self.TYPE_SUBS_IDX, self.MBOX_KEY, '1')]
+        # TODO ignore the first parameter and change tests accordingly.
+        d = self.account.callWhenReady(cb, *args, **kw)
+        return d
 
     def getMailbox(self, name):
         """
@@ -155,16 +120,27 @@ class SoledadBackedAccount(WithMsgFields, IndexedDB, MBoxParser):
         :param name: name of the mailbox
         :type name: str
 
-        :returns: a a SoledadMailbox instance
-        :rtype: SoledadMailbox
+        :returns: an IMAPMailbox instance
+        :rtype: IMAPMailbox
         """
-        name = self._parse_mailbox_name(name)
+        name = normalize_mailbox(name)
 
-        if name not in self.mailboxes:
-            raise imap4.MailboxException("No such mailbox: %r" % name)
+        def check_it_exists(mailboxes):
+            if name not in mailboxes:
+                raise imap4.MailboxException("No such mailbox: %r" % name)
+            return True
 
-        return SoledadMailbox(name, self._soledad,
-                              memstore=self._memstore)
+        d = self.account.list_all_mailbox_names()
+        d.addCallback(check_it_exists)
+        d.addCallback(lambda _: self.account.get_collection_by_mailbox(name))
+        d.addCallback(self._return_mailbox_from_collection)
+        return d
+
+    def _return_mailbox_from_collection(self, collection, readwrite=1):
+        if collection is None:
+            return None
+        mbox = IMAPMailbox(collection, rw=readwrite)
+        return mbox
 
     #
     # IAccount
@@ -182,61 +158,76 @@ class SoledadBackedAccount(WithMsgFields, IndexedDB, MBoxParser):
                             one is provided.
         :type creation_ts: int
 
-        :returns: True if successful
-        :rtype: bool
+        :returns: a Deferred that will contain the document if successful.
+        :rtype: defer.Deferred
         """
-        name = self._parse_mailbox_name(name)
+        name = normalize_mailbox(name)
 
+        # FIXME --- return failure instead of AssertionError
+        # See AccountTestCase...
         leap_assert(name, "Need a mailbox name to create a mailbox")
 
-        if name in self.mailboxes:
-            raise imap4.MailboxCollision(repr(name))
-
-        if creation_ts is None:
-            # by default, we pass an int value
-            # taken from the current time
-            # we make sure to take enough decimals to get a unique
-            # mailbox-uidvalidity.
-            creation_ts = int(time.time() * 10E2)
+        def check_it_does_not_exist(mailboxes):
+            if name in mailboxes:
+                raise imap4.MailboxCollision, repr(name)
+            return mailboxes
 
-        mbox = self._get_empty_mailbox()
-        mbox[self.MBOX_KEY] = name
-        mbox[self.CREATED_KEY] = creation_ts
-
-        doc = self._soledad.create_doc(mbox)
-        self._load_mailboxes()
-        return bool(doc)
+        d = self.account.list_all_mailbox_names()
+        d.addCallback(check_it_does_not_exist)
+        d.addCallback(lambda _: self.account.add_mailbox(
+            name, creation_ts=creation_ts))
+        d.addCallback(lambda _: self.account.get_collection_by_mailbox(name))
+        d.addCallback(self._return_mailbox_from_collection)
+        return d
 
     def create(self, pathspec):
         """
         Create a new mailbox from the given hierarchical name.
 
-        :param pathspec: The full hierarchical name of a new mailbox to create.
-                         If any of the inferior hierarchical names to this one
-                         do not exist, they are created as well.
+        :param pathspec:
+            The full hierarchical name of a new mailbox to create.
+            If any of the inferior hierarchical names to this one
+            do not exist, they are created as well.
         :type pathspec: str
 
-        :return: A true value if the creation succeeds.
-        :rtype: bool
+        :return:
+            A deferred that will fire with a true value if the creation
+            succeeds. The deferred might fail with a MailboxException
+            if the mailbox cannot be added.
+        :rtype: Deferred
 
-        :raise MailboxException: Raised if this mailbox cannot be added.
         """
-        # TODO raise MailboxException
-        paths = filter(
-            None,
-            self._parse_mailbox_name(pathspec).split('/'))
-        for accum in range(1, len(paths)):
-            try:
-                self.addMailbox('/'.join(paths[:accum]))
-            except imap4.MailboxCollision:
-                pass
-        try:
-            self.addMailbox('/'.join(paths))
-        except imap4.MailboxCollision:
+        def pass_on_collision(failure):
+            failure.trap(imap4.MailboxCollision)
+            return True
+
+        def handle_collision(failure):
+            failure.trap(imap4.MailboxCollision)
             if not pathspec.endswith('/'):
-                return False
-        self._load_mailboxes()
-        return True
+                return defer.succeed(False)
+            else:
+                return defer.succeed(True)
+
+        def all_good(result):
+            return all(result)
+
+        paths = filter(None, normalize_mailbox(pathspec).split('/'))
+        subs = []
+        sep = '/'
+
+        for accum in range(1, len(paths)):
+            partial_path = sep.join(paths[:accum])
+            d = self.addMailbox(partial_path)
+            d.addErrback(pass_on_collision)
+            subs.append(d)
+
+        df = self.addMailbox(sep.join(paths))
+        df.addErrback(handle_collision)
+        subs.append(df)
+
+        d1 = defer.gatherResults(subs)
+        d1.addCallback(all_good)
+        return d1
 
     def select(self, name, readwrite=1):
         """
@@ -248,65 +239,87 @@ class SoledadBackedAccount(WithMsgFields, IndexedDB, MBoxParser):
         :param readwrite: 1 for readwrite permissions.
         :type readwrite: int
 
-        :rtype: SoledadMailbox
+        :rtype: IMAPMailbox
         """
-        if PROFILE_CMD:
-            start = time.time()
+        name = normalize_mailbox(name)
 
-        name = self._parse_mailbox_name(name)
-        if name not in self.mailboxes:
-            logger.warning("No such mailbox!")
-            return None
-        self.selected = name
+        def check_it_exists(mailboxes):
+            if name not in mailboxes:
+                logger.warning("SELECT: No such mailbox!")
+                return None
+            return name
+
+        def set_selected(_):
+            self.selected = name
 
-        sm = SoledadMailbox(
-            name, self._soledad, self._memstore, readwrite)
-        if PROFILE_CMD:
-            _debugProfiling(None, "SELECT", start)
-        return sm
+        def get_collection(name):
+            if name is None:
+                return None
+            return self.account.get_collection_by_mailbox(name)
+
+        d = self.account.list_all_mailbox_names()
+        d.addCallback(check_it_exists)
+        d.addCallback(get_collection)
+        d.addCallback(partial(
+            self._return_mailbox_from_collection, readwrite=readwrite))
+        return d
 
     def delete(self, name, force=False):
         """
         Deletes a mailbox.
 
-        Right now it does not purge the messages, but just removes the mailbox
-        name from the mailboxes list!!!
-
         :param name: the mailbox to be deleted
         :type name: str
 
-        :param force: if True, it will not check for noselect flag or inferior
-                      names. use with care.
+        :param force:
+            if True, it will not check for noselect flag or inferior
+            names. use with care.
         :type force: bool
+        :rtype: Deferred
         """
-        name = self._parse_mailbox_name(name)
+        name = normalize_mailbox(name)
+        _mboxes = None
+
+        def check_it_exists(mailboxes):
+            global _mboxes
+            _mboxes = mailboxes
+            if name not in mailboxes:
+                raise imap4.MailboxException("No such mailbox: %r" % name)
 
-        if name not in self.mailboxes:
-            raise imap4.MailboxException("No such mailbox: %r" % name)
-        mbox = self.getMailbox(name)
+        def get_mailbox(_):
+            return self.getMailbox(name)
 
-        if force is False:
+        def destroy_mailbox(mbox):
+            return mbox.destroy()
+
+        def check_can_be_deleted(mbox):
+            global _mboxes
             # See if this box is flagged \Noselect
-            # XXX use mbox.flags instead?
             mbox_flags = mbox.getFlags()
-            if self.NOSELECT_FLAG in mbox_flags:
+            if MessageFlags.NOSELECT_FLAG in mbox_flags:
                 # Check for hierarchically inferior mailboxes with this one
                 # as part of their root.
-                for others in self.mailboxes:
+                for others in _mboxes:
                     if others != name and others.startswith(name):
-                        raise imap4.MailboxException, (
+                        raise imap4.MailboxException(
                             "Hierarchically inferior mailboxes "
                             "exist and \\Noselect is set")
-        self.__mailboxes.discard(name)
-        mbox.destroy()
+            return mbox
 
-        # XXX FIXME --- not honoring the inferior names...
+        d = self.account.list_all_mailbox_names()
+        d.addCallback(check_it_exists)
+        d.addCallback(get_mailbox)
+        if not force:
+            d.addCallback(check_can_be_deleted)
+        d.addCallback(destroy_mailbox)
+        return d
 
+        # FIXME --- not honoring the inferior names...
         # if there are no hierarchically inferior names, we will
         # delete it from our ken.
+        # XXX is this right?
         # if self._inferiorNames(name) > 1:
-        #  ??! -- can this be rite?
-        # self._index.removeMailbox(name)
+        #   self._index.removeMailbox(name)
 
     def rename(self, oldname, newname):
         """
@@ -318,27 +331,31 @@ class SoledadBackedAccount(WithMsgFields, IndexedDB, MBoxParser):
         :param newname: new name of the mailbox
         :type newname: str
         """
-        oldname = self._parse_mailbox_name(oldname)
-        newname = self._parse_mailbox_name(newname)
+        oldname = normalize_mailbox(oldname)
+        newname = normalize_mailbox(newname)
+
+        def rename_inferiors((inferiors, mailboxes)):
+            rename_deferreds = []
+            inferiors = [
+                (o, o.replace(oldname, newname, 1)) for o in inferiors]
 
-        if oldname not in self.mailboxes:
-            raise imap4.NoSuchMailbox(repr(oldname))
+            for (old, new) in inferiors:
+                if new in mailboxes:
+                    raise imap4.MailboxCollision(repr(new))
 
-        inferiors = self._inferiorNames(oldname)
-        inferiors = [(o, o.replace(oldname, newname, 1)) for o in inferiors]
+            for (old, new) in inferiors:
+                d = self.account.rename_mailbox(old, new)
+                rename_deferreds.append(d)
 
-        for (old, new) in inferiors:
-            if new in self.mailboxes:
-                raise imap4.MailboxCollision(repr(new))
+            d1 = defer.gatherResults(rename_deferreds, consumeErrors=True)
+            return d1
 
-        for (old, new) in inferiors:
-            self._memstore.rename_fdocs_mailbox(old, new)
-            mbox = self._get_mailbox_by_name(old)
-            mbox.content[self.MBOX_KEY] = new
-            self.__mailboxes.discard(old)
-            self._soledad.put_doc(mbox)
+        d1 = self._inferiorNames(oldname)
+        d2 = self.account.list_all_mailbox_names()
 
-        self._load_mailboxes()
+        d = defer.gatherResults([d1, d2])
+        d.addCallback(rename_inferiors)
+        return d
 
     def _inferiorNames(self, name):
         """
@@ -348,54 +365,87 @@ class SoledadBackedAccount(WithMsgFields, IndexedDB, MBoxParser):
         :rtype: list
         """
         # XXX use wildcard query instead
-        inferiors = []
-        for infname in self.mailboxes:
-            if infname.startswith(name):
-                inferiors.append(infname)
-        return inferiors
+        def filter_inferiors(mailboxes):
+            inferiors = []
+            for infname in mailboxes:
+                if infname.startswith(name):
+                    inferiors.append(infname)
+            return inferiors
 
-    def isSubscribed(self, name):
+        d = self.account.list_all_mailbox_names()
+        d.addCallback(filter_inferiors)
+        return d
+
+    def listMailboxes(self, ref, wildcard):
         """
-        Returns True if user is subscribed to this mailbox.
+        List the mailboxes.
 
-        :param name: the mailbox to be checked.
-        :type name: str
+        from rfc 3501:
+        returns a subset of names from the complete set
+        of all names available to the client.  Zero or more untagged LIST
+        replies are returned, containing the name attributes, hierarchy
+        delimiter, and name.
 
-        :rtype: bool
+        :param ref: reference name
+        :type ref: str
+
+        :param wildcard: mailbox name with possible wildcards
+        :type wildcard: str
         """
-        mbox = self._get_mailbox_by_name(name)
-        return mbox.content.get('subscribed', False)
+        wildcard = imap4.wildcardToRegexp(wildcard, '/')
+
+        def get_list(mboxes, mboxes_names):
+            return zip(mboxes_names, mboxes)
+
+        def filter_inferiors(ref):
+            mboxes = [mbox for mbox in ref if wildcard.match(mbox)]
+            mbox_d = defer.gatherResults([self.getMailbox(m) for m in mboxes])
 
-    def _set_subscription(self, name, value):
+            mbox_d.addCallback(get_list, mboxes)
+            return mbox_d
+
+        d = self._inferiorNames(normalize_mailbox(ref))
+        d.addCallback(filter_inferiors)
+        return d
+
+    #
+    # The rest of the methods are specific for leap.mail.imap.account.Account
+    #
+
+    def isSubscribed(self, name):
         """
-        Sets the subscription value for a given mailbox
+        Returns True if user is subscribed to this mailbox.
 
-        :param name: the mailbox
+        :param name: the mailbox to be checked.
         :type name: str
 
-        :param value: the boolean value
-        :type value: bool
+        :rtype: Deferred (will fire with bool)
         """
-        # maybe we should store subscriptions in another
-        # document...
-        if name not in self.mailboxes:
-            self.addMailbox(name)
-        mbox = self._get_mailbox_by_name(name)
+        name = normalize_mailbox(name)
 
-        if mbox:
-            mbox.content[self.SUBSCRIBED_KEY] = value
-            self._soledad.put_doc(mbox)
+        def get_subscribed(mbox):
+            return mbox.collection.get_mbox_attr("subscribed")
+
+        d = self.getMailbox(name)
+        d.addCallback(get_subscribed)
+        return d
 
     def subscribe(self, name):
         """
-        Subscribe to this mailbox
+        Subscribe to this mailbox if not already subscribed.
 
         :param name: name of the mailbox
         :type name: str
+        :rtype: Deferred
         """
-        name = self._parse_mailbox_name(name)
-        if name not in self.subscriptions:
-            self._set_subscription(name, True)
+        name = normalize_mailbox(name)
+
+        def set_subscribed(mbox):
+            return mbox.collection.set_mbox_attr("subscribed", True)
+
+        d = self.getMailbox(name)
+        d.addCallback(set_subscribed)
+        return d
 
     def unsubscribe(self, name):
         """
@@ -403,34 +453,27 @@ class SoledadBackedAccount(WithMsgFields, IndexedDB, MBoxParser):
 
         :param name: name of the mailbox
         :type name: str
+        :rtype: Deferred
         """
-        name = self._parse_mailbox_name(name)
-        if name not in self.subscriptions:
-            raise imap4.MailboxException(
-                "Not currently subscribed to %r" % name)
-        self._set_subscription(name, False)
+        # TODO should raise MailboxException if attempted to unsubscribe
+        # from a mailbox that is not currently subscribed.
+        # TODO factor out with subscribe method.
+        name = normalize_mailbox(name)
 
-    def listMailboxes(self, ref, wildcard):
-        """
-        List the mailboxes.
+        def set_unsubscribed(mbox):
+            return mbox.collection.set_mbox_attr("subscribed", False)
 
-        from rfc 3501:
-        returns a subset of names from the complete set
-        of all names available to the client.  Zero or more untagged LIST
-        replies are returned, containing the name attributes, hierarchy
-        delimiter, and name.
+        d = self.getMailbox(name)
+        d.addCallback(set_unsubscribed)
+        return d
 
-        :param ref: reference name
-        :type ref: str
+    def getSubscriptions(self):
+        def get_subscribed(mailboxes):
+            return [x.mbox for x in mailboxes if x.subscribed]
 
-        :param wildcard: mailbox name with possible wildcards
-        :type wildcard: str
-        """
-        # XXX use wildcard in index query
-        ref = self._inferiorNames(
-            self._parse_mailbox_name(ref))
-        wildcard = imap4.wildcardToRegexp(wildcard, '/')
-        return [(i, self.getMailbox(i)) for i in ref if wildcard.match(i)]
+        d = self.account.get_all_mailboxes()
+        d.addCallback(get_subscribed)
+        return d
 
     #
     # INamespacePresenter
@@ -445,22 +488,8 @@ class SoledadBackedAccount(WithMsgFields, IndexedDB, MBoxParser):
     def getOtherNamespaces(self):
         return None
 
-    # extra, for convenience
-
-    def deleteAllMessages(self, iknowhatiamdoing=False):
-        """
-        Deletes all messages from all mailboxes.
-        Danger! high voltage!
-
-        :param iknowhatiamdoing: confirmation parameter, needs to be True
-                                 to proceed.
-        """
-        if iknowhatiamdoing is True:
-            for mbox in self.mailboxes:
-                self.delete(mbox, force=True)
-
     def __repr__(self):
         """
         Representation string for this object.
         """
-        return "<SoledadBackedAccount (%s)>" % self._account_name
+        return "<IMAPAccount (%s)>" % self.user_id
diff --git a/src/leap/mail/imap/fetch.py b/src/leap/mail/imap/fetch.py
deleted file mode 100644
index 0a97752..0000000
--- a/src/leap/mail/imap/fetch.py
+++ /dev/null
@@ -1,655 +0,0 @@
-# -*- coding: utf-8 -*-
-# fetch.py
-# Copyright (C) 2013 LEAP
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-"""
-Incoming mail fetcher.
-"""
-import copy
-import logging
-import threading
-import time
-import sys
-import traceback
-import warnings
-
-from email.parser import Parser
-from email.generator import Generator
-from email.utils import parseaddr
-from StringIO import StringIO
-
-from twisted.python import log
-from twisted.internet import defer
-from twisted.internet.task import LoopingCall
-from twisted.internet.task import deferLater
-from u1db import errors as u1db_errors
-from zope.proxy import sameProxiedObjects
-
-from leap.common import events as leap_events
-from leap.common.check import leap_assert, leap_assert_type
-from leap.common.events.events_pb2 import IMAP_FETCHED_INCOMING
-from leap.common.events.events_pb2 import IMAP_MSG_PROCESSING
-from leap.common.events.events_pb2 import IMAP_MSG_DECRYPTED
-from leap.common.events.events_pb2 import IMAP_MSG_SAVED_LOCALLY
-from leap.common.events.events_pb2 import IMAP_MSG_DELETED_INCOMING
-from leap.common.events.events_pb2 import IMAP_UNREAD_MAIL
-from leap.common.events.events_pb2 import SOLEDAD_INVALID_AUTH_TOKEN
-from leap.common.mail import get_email_charset
-from leap.keymanager import errors as keymanager_errors
-from leap.keymanager.openpgp import OpenPGPKey
-from leap.mail.decorators import deferred_to_thread
-from leap.mail.imap.fields import fields
-from leap.mail.utils import json_loads, empty, first
-from leap.soledad.client import Soledad
-from leap.soledad.common.crypto import ENC_SCHEME_KEY, ENC_JSON_KEY
-from leap.soledad.common.errors import InvalidAuthTokenError
-
-
-logger = logging.getLogger(__name__)
-
-MULTIPART_ENCRYPTED = "multipart/encrypted"
-MULTIPART_SIGNED = "multipart/signed"
-PGP_BEGIN = "-----BEGIN PGP MESSAGE-----"
-PGP_END = "-----END PGP MESSAGE-----"
-
-
-class MalformedMessage(Exception):
-    """
-    Raised when a given message is not well formed.
-    """
-    pass
-
-
-class LeapIncomingMail(object):
-    """
-    Fetches and process mail from the incoming pool.
-
-    This object has public methods start_loop and stop that will
-    actually initiate a LoopingCall with check_period recurrency.
-    The LoopingCall itself will invoke the fetch method each time
-    that the check_period expires.
-
-    This loop will sync the soledad db with the remote server and
-    process all the documents found tagged as incoming mail.
-    """
-
-    RECENT_FLAG = "\\Recent"
-    CONTENT_KEY = "content"
-
-    LEAP_SIGNATURE_HEADER = 'X-Leap-Signature'
-    """
-    Header added to messages when they are decrypted by the IMAP fetcher,
-    which states the validity of an eventual signature that might be included
-    in the encrypted blob.
-    """
-    LEAP_SIGNATURE_VALID = 'valid'
-    LEAP_SIGNATURE_INVALID = 'invalid'
-    LEAP_SIGNATURE_COULD_NOT_VERIFY = 'could not verify'
-
-    fetching_lock = threading.Lock()
-
-    def __init__(self, keymanager, soledad, imap_account,
-                 check_period, userid):
-
-        """
-        Initialize LeapIncomingMail..
-
-        :param keymanager: a keymanager instance
-        :type keymanager: keymanager.KeyManager
-
-        :param soledad: a soledad instance
-        :type soledad: Soledad
-
-        :param imap_account: the account to fetch periodically
-        :type imap_account: SoledadBackedAccount
-
-        :param check_period: the period to fetch new mail, in seconds.
-        :type check_period: int
-        """
-
-        leap_assert(keymanager, "need a keymanager to initialize")
-        leap_assert_type(soledad, Soledad)
-        leap_assert(check_period, "need a period to check incoming mail")
-        leap_assert_type(check_period, int)
-        leap_assert(userid, "need a userid to initialize")
-
-        self._keymanager = keymanager
-        self._soledad = soledad
-        self.imapAccount = imap_account
-        self._inbox = self.imapAccount.getMailbox('inbox')
-        self._userid = userid
-
-        self._loop = None
-        self._check_period = check_period
-
-        # initialize a mail parser only once
-        self._parser = Parser()
-
-    @property
-    def _pkey(self):
-        if sameProxiedObjects(self._keymanager, None):
-            logger.warning('tried to get key, but null keymanager found')
-            return None
-        return self._keymanager.get_key(self._userid, OpenPGPKey, private=True)
-
-    #
-    # Public API: fetch, start_loop, stop.
-    #
-
-    def fetch(self):
-        """
-        Fetch incoming mail, to be called periodically.
-
-        Calls a deferred that will execute the fetch callback
-        in a separate thread
-        """
-        def syncSoledadCallback(result):
-            # FIXME this needs a matching change in mx!!!
-            # --> need to add ERROR_DECRYPTING_KEY = False
-            # as default.
-            try:
-                doclist = self._soledad.get_from_index(
-                    fields.JUST_MAIL_IDX, "*", "0")
-            except u1db_errors.InvalidGlobbing:
-                # It looks like we are a dealing with an outdated
-                # mx. Fallback to the version of the index
-                warnings.warn("JUST_MAIL_COMPAT_IDX will be deprecated!",
-                              DeprecationWarning)
-                doclist = self._soledad.get_from_index(
-                    fields.JUST_MAIL_COMPAT_IDX, "*")
-            self._process_doclist(doclist)
-
-        logger.debug("fetching mail for: %s %s" % (
-            self._soledad.uuid, self._userid))
-        if not self.fetching_lock.locked():
-            d1 = self._sync_soledad()
-            d = defer.gatherResults([d1], consumeErrors=True)
-            d.addCallbacks(syncSoledadCallback, self._errback)
-            d.addCallbacks(self._signal_fetch_to_ui, self._errback)
-            return d
-        else:
-            logger.debug("Already fetching mail.")
-
-    def start_loop(self):
-        """
-        Starts a loop to fetch mail.
-        """
-        if self._loop is None:
-            self._loop = LoopingCall(self.fetch)
-            self._loop.start(self._check_period)
-        else:
-            logger.warning("Tried to start an already running fetching loop.")
-
-    def stop(self):
-        # XXX change the name to stop_loop, for consistency.
-        """
-        Stops the loop that fetches mail.
-        """
-        if self._loop and self._loop.running is True:
-            self._loop.stop()
-            self._loop = None
-
-    #
-    # Private methods.
-    #
-
-    # synchronize incoming mail
-
-    def _errback(self, failure):
-        logger.exception(failure.value)
-        traceback.print_tb(*sys.exc_info())
-
-    @deferred_to_thread
-    def _sync_soledad(self):
-        """
-        Synchronize with remote soledad.
-
-        :returns: a list of LeapDocuments, or None.
-        :rtype: iterable or None
-        """
-        with self.fetching_lock:
-            try:
-                log.msg('FETCH: syncing soledad...')
-                self._soledad.sync()
-                log.msg('FETCH soledad SYNCED.')
-            except InvalidAuthTokenError:
-                # if the token is invalid, send an event so the GUI can
-                # disable mail and show an error message.
-                leap_events.signal(SOLEDAD_INVALID_AUTH_TOKEN)
-
-    def _signal_fetch_to_ui(self, doclist):
-        """
-        Send leap events to ui.
-
-        :param doclist: iterable with msg documents.
-        :type doclist: iterable.
-        :returns: doclist
-        :rtype: iterable
-        """
-        doclist = first(doclist)  # gatherResults pass us a list
-        if doclist:
-            fetched_ts = time.mktime(time.gmtime())
-            num_mails = len(doclist) if doclist is not None else 0
-            if num_mails != 0:
-                log.msg("there are %s mails" % (num_mails,))
-            leap_events.signal(
-                IMAP_FETCHED_INCOMING, str(num_mails), str(fetched_ts))
-            return doclist
-
-    def _signal_unread_to_ui(self, *args):
-        """
-        Sends unread event to ui.
-        """
-        leap_events.signal(
-            IMAP_UNREAD_MAIL, str(self._inbox.getUnseenCount()))
-
-    # process incoming mail.
-
-    def _process_doclist(self, doclist):
-        """
-        Iterates through the doclist, checks if each doc
-        looks like a message, and yields a deferred that will decrypt and
-        process the message.
-
-        :param doclist: iterable with msg documents.
-        :type doclist: iterable.
-        :returns: a list of deferreds for individual messages.
-        """
-        log.msg('processing doclist')
-        if not doclist:
-            logger.debug("no docs found")
-            return
-        num_mails = len(doclist)
-
-        for index, doc in enumerate(doclist):
-            logger.debug("processing doc %d of %d" % (index + 1, num_mails))
-            leap_events.signal(
-                IMAP_MSG_PROCESSING, str(index), str(num_mails))
-
-            keys = doc.content.keys()
-
-            # TODO Compatibility check with the index in pre-0.6 mx
-            # that does not write the ERROR_DECRYPTING_KEY
-            # This should be removed in 0.7
-
-            has_errors = doc.content.get(fields.ERROR_DECRYPTING_KEY, None)
-            if has_errors is None:
-                warnings.warn("JUST_MAIL_COMPAT_IDX will be deprecated!",
-                              DeprecationWarning)
-            if has_errors:
-                logger.debug("skipping msg with decrypting errors...")
-
-            if self._is_msg(keys) and not has_errors:
-                # Evaluating to bool of has_errors is intentional here.
-                # We don't mind at this point if it's None or False.
-
-                # Ok, this looks like a legit msg, and with no errors.
-                # Let's process it!
-
-                d1 = self._decrypt_doc(doc)
-                d = defer.gatherResults([d1], consumeErrors=True)
-                d.addCallbacks(self._add_message_locally, self._errback)
-
-    #
-    # operations on individual messages
-    #
-
-    @deferred_to_thread
-    def _decrypt_doc(self, doc):
-        """
-        Decrypt the contents of a document.
-
-        :param doc: A document containing an encrypted message.
-        :type doc: SoledadDocument
-
-        :return: A tuple containing the document and the decrypted message.
-        :rtype: (SoledadDocument, str)
-        """
-        log.msg('decrypting msg')
-        success = False
-
-        try:
-            decrdata = self._keymanager.decrypt(
-                doc.content[ENC_JSON_KEY],
-                self._pkey)
-            success = True
-        except Exception as exc:
-            # XXX move this to errback !!!
-            logger.error("Error while decrypting msg: %r" % (exc,))
-            decrdata = ""
-        leap_events.signal(IMAP_MSG_DECRYPTED, "1" if success else "0")
-
-        data = self._process_decrypted_doc((doc, decrdata))
-        return (doc, data)
-
-    def _process_decrypted_doc(self, msgtuple):
-        """
-        Process a document containing a succesfully decrypted message.
-
-        :param msgtuple: a tuple consisting of a SoledadDocument
-                         instance containing the incoming message
-                         and data, the json-encoded, decrypted content of the
-                         incoming message
-        :type msgtuple: (SoledadDocument, str)
-        :return: a SoledadDocument and the processed data.
-        :rtype: (doc, data)
-        """
-        log.msg('processing decrypted doc')
-        doc, data = msgtuple
-
-        from twisted.internet import reactor
-
-        # XXX turn this into an errBack for each one of
-        # the deferreds that would process an individual document
-        try:
-            msg = json_loads(data)
-        except UnicodeError as exc:
-            logger.error("Error while decrypting %s" % (doc.doc_id,))
-            logger.exception(exc)
-
-            # we flag the message as "with decrypting errors",
-            # to avoid further decryption attempts during sync
-            # cycles until we're prepared to deal with that.
-            # What is the same, when Ivan deals with it...
-            # A new decrypting attempt event could be triggered by a
-            # future a library upgrade, or a cli flag to the client,
-            # we just `defer` that for now... :)
-            doc.content[fields.ERROR_DECRYPTING_KEY] = True
-            deferLater(reactor, 0, self._update_incoming_message, doc)
-
-            # FIXME this is just a dirty hack to delay the proper
-            # deferred organization here...
-            # and remember, boys, do not do this at home.
-            return []
-
-        if not isinstance(msg, dict):
-            defer.returnValue(False)
-        if not msg.get(fields.INCOMING_KEY, False):
-            defer.returnValue(False)
-
-        # ok, this is an incoming message
-        rawmsg = msg.get(self.CONTENT_KEY, None)
-        if not rawmsg:
-            return False
-        return self._maybe_decrypt_msg(rawmsg)
-
-    @deferred_to_thread
-    def _update_incoming_message(self, doc):
-        """
-        Do a put for a soledad document. This probably has been called only
-        in the case that we've needed to update the ERROR_DECRYPTING_KEY
-        flag in an incoming message, to get it out of the decrypting queue.
-
-        :param doc: the SoledadDocument to update
-        :type doc: SoledadDocument
-        """
-        log.msg("Updating SoledadDoc %s" % (doc.doc_id))
-        self._soledad.put_doc(doc)
-
-    @deferred_to_thread
-    def _delete_incoming_message(self, doc):
-        """
-        Delete document.
-
-        :param doc: the SoledadDocument to delete
-        :type doc: SoledadDocument
-        """
-        log.msg("Deleting Incoming message: %s" % (doc.doc_id,))
-        self._soledad.delete_doc(doc)
-
-    def _maybe_decrypt_msg(self, data):
-        """
-        Tries to decrypt a gpg message if data looks like one.
-
-        :param data: the text to be decrypted.
-        :type data: str
-        :return: data, possibly descrypted.
-        :rtype: str
-        """
-        leap_assert_type(data, str)
-        log.msg('maybe decrypting doc')
-
-        # parse the original message
-        encoding = get_email_charset(data)
-        msg = self._parser.parsestr(data)
-
-        # try to obtain sender public key
-        senderPubkey = None
-        fromHeader = msg.get('from', None)
-        if (fromHeader is not None
-            and (msg.get_content_type() == MULTIPART_ENCRYPTED
-                 or msg.get_content_type() == MULTIPART_SIGNED)):
-            _, senderAddress = parseaddr(fromHeader)
-            try:
-                senderPubkey = self._keymanager.get_key_from_cache(
-                    senderAddress, OpenPGPKey)
-            except keymanager_errors.KeyNotFound:
-                pass
-
-        valid_sig = False  # we will add a header saying if sig is valid
-        decrypt_multi = self._decrypt_multipart_encrypted_msg
-        decrypt_inline = self._maybe_decrypt_inline_encrypted_msg
-
-        if msg.get_content_type() == MULTIPART_ENCRYPTED:
-            decrmsg, valid_sig = decrypt_multi(
-                msg, encoding, senderPubkey)
-        else:
-            decrmsg, valid_sig = decrypt_inline(
-                msg, encoding, senderPubkey)
-
-        # add x-leap-signature header
-        if senderPubkey is None:
-            decrmsg.add_header(
-                self.LEAP_SIGNATURE_HEADER,
-                self.LEAP_SIGNATURE_COULD_NOT_VERIFY)
-        else:
-            decrmsg.add_header(
-                self.LEAP_SIGNATURE_HEADER,
-                self.LEAP_SIGNATURE_VALID if valid_sig else
-                self.LEAP_SIGNATURE_INVALID,
-                pubkey=senderPubkey.key_id)
-
-        return decrmsg.as_string()
-
-    def _decrypt_multipart_encrypted_msg(self, msg, encoding, senderPubkey):
-        """
-        Decrypt a message with content-type 'multipart/encrypted'.
-
-        :param msg: The original encrypted message.
-        :type msg: Message
-        :param encoding: The encoding of the email message.
-        :type encoding: str
-        :param senderPubkey: The key of the sender of the message.
-        :type senderPubkey: OpenPGPKey
-
-        :return: A unitary tuple containing a decrypted message.
-        :rtype: (Message)
-        """
-        log.msg('decrypting multipart encrypted msg')
-        msg = copy.deepcopy(msg)
-        self._msg_multipart_sanity_check(msg)
-
-        # parse message and get encrypted content
-        pgpencmsg = msg.get_payload()[1]
-        encdata = pgpencmsg.get_payload()
-
-        # decrypt or fail gracefully
-        try:
-            decrdata, valid_sig = self._decrypt_and_verify_data(
-                encdata, senderPubkey)
-        except keymanager_errors.DecryptError as e:
-            logger.warning('Failed to decrypt encrypted message (%s). '
-                           'Storing message without modifications.' % str(e))
-            # Bailing out!
-            return (msg, False)
-
-        decrmsg = self._parser.parsestr(decrdata)
-        # remove original message's multipart/encrypted content-type
-        del(msg['content-type'])
-
-        # replace headers back in original message
-        for hkey, hval in decrmsg.items():
-            try:
-                # this will raise KeyError if header is not present
-                msg.replace_header(hkey, hval)
-            except KeyError:
-                msg[hkey] = hval
-
-        # all ok, replace payload by unencrypted payload
-        msg.set_payload(decrmsg.get_payload())
-        return (msg, valid_sig)
-
-    def _maybe_decrypt_inline_encrypted_msg(self, origmsg, encoding,
-                                            senderPubkey):
-        """
-        Possibly decrypt an inline OpenPGP encrypted message.
-
-        :param origmsg: The original, possibly encrypted message.
-        :type origmsg: Message
-        :param encoding: The encoding of the email message.
-        :type encoding: str
-        :param senderPubkey: The key of the sender of the message.
-        :type senderPubkey: OpenPGPKey
-
-        :return: A tuple containing a decrypted message and
-                 a bool indicating whether the signature is valid.
-        :rtype: (Message, bool)
-        """
-        log.msg('maybe decrypting inline encrypted msg')
-        # serialize the original message
-        buf = StringIO()
-        g = Generator(buf)
-        g.flatten(origmsg)
-        data = buf.getvalue()
-        # handle exactly one inline PGP message
-        valid_sig = False
-        if PGP_BEGIN in data:
-            begin = data.find(PGP_BEGIN)
-            end = data.find(PGP_END)
-            pgp_message = data[begin:end + len(PGP_END)]
-            try:
-                decrdata, valid_sig = self._decrypt_and_verify_data(
-                    pgp_message, senderPubkey)
-                # replace encrypted by decrypted content
-                data = data.replace(pgp_message, decrdata)
-            except keymanager_errors.DecryptError:
-                logger.warning('Failed to decrypt potential inline encrypted '
-                               'message. Storing message as is...')
-
-        # if message is not encrypted, return raw data
-        if isinstance(data, unicode):
-            data = data.encode(encoding, 'replace')
-        return (self._parser.parsestr(data), valid_sig)
-
-    def _decrypt_and_verify_data(self, data, senderPubkey):
-        """
-        Decrypt C{data} using our private key and attempt to verify a
-        signature using C{senderPubkey}.
-
-        :param data: The text to be decrypted.
-        :type data: unicode
-        :param senderPubkey: The public key of the sender of the message.
-        :type senderPubkey: OpenPGPKey
-
-        :return: The decrypted data and a boolean stating whether the
-                 signature could be verified.
-        :rtype: (str, bool)
-
-        :raise DecryptError: Raised if failed to decrypt.
-        """
-        log.msg('decrypting and verifying data')
-        valid_sig = False
-        try:
-            decrdata = self._keymanager.decrypt(
-                data, self._pkey,
-                verify=senderPubkey)
-            if senderPubkey is not None:
-                valid_sig = True
-        except keymanager_errors.InvalidSignature:
-            decrdata = self._keymanager.decrypt(
-                data, self._pkey)
-        return (decrdata, valid_sig)
-
-    def _add_message_locally(self, result):
-        """
-        Adds a message to local inbox and delete it from the incoming db
-        in soledad.
-
-        # XXX this comes from a gatherresult...
-        :param msgtuple: a tuple consisting of a SoledadDocument
-                         instance containing the incoming message
-                         and data, the json-encoded, decrypted content of the
-                         incoming message
-        :type msgtuple: (SoledadDocument, str)
-        """
-        from twisted.internet import reactor
-        msgtuple = first(result)
-
-        doc, data = msgtuple
-        log.msg('adding message %s to local db' % (doc.doc_id,))
-
-        if isinstance(data, list):
-            if empty(data):
-                return False
-            data = data[0]
-
-        def msgSavedCallback(result):
-            if not empty(result):
-                leap_events.signal(IMAP_MSG_SAVED_LOCALLY)
-                deferLater(reactor, 0, self._delete_incoming_message, doc)
-                leap_events.signal(IMAP_MSG_DELETED_INCOMING)
-
-        d = self._inbox.addMessage(data, flags=(self.RECENT_FLAG,),
-                                   notify_on_disk=True)
-        d.addCallbacks(msgSavedCallback, self._errback)
-
-    #
-    # helpers
-    #
-
-    def _msg_multipart_sanity_check(self, msg):
-        """
-        Performs a sanity check against a multipart encrypted msg
-
-        :param msg: The original encrypted message.
-        :type msg: Message
-        """
-        # sanity check
-        payload = msg.get_payload()
-        if len(payload) != 2:
-            raise MalformedMessage(
-                'Multipart/encrypted messages should have exactly 2 body '
-                'parts (instead of %d).' % len(payload))
-        if payload[0].get_content_type() != 'application/pgp-encrypted':
-            raise MalformedMessage(
-                "Multipart/encrypted messages' first body part should "
-                "have content type equal to 'application/pgp-encrypted' "
-                "(instead of %s)." % payload[0].get_content_type())
-        if payload[1].get_content_type() != 'application/octet-stream':
-            raise MalformedMessage(
-                "Multipart/encrypted messages' second body part should "
-                "have content type equal to 'octet-stream' (instead of "
-                "%s)." % payload[1].get_content_type())
-
-    def _is_msg(self, keys):
-        """
-        Checks if the keys of a dictionary match the signature
-        of the document type we use for messages.
-
-        :param keys: iterable containing the strings to match.
-        :type keys: iterable of strings.
-        :rtype: bool
-        """
-        return ENC_SCHEME_KEY in keys and ENC_JSON_KEY in keys
diff --git a/src/leap/mail/imap/fields.py b/src/leap/mail/imap/fields.py
deleted file mode 100644
index 4576939..0000000
--- a/src/leap/mail/imap/fields.py
+++ /dev/null
@@ -1,173 +0,0 @@
-# -*- coding: utf-8 -*-
-# fields.py
-# Copyright (C) 2013 LEAP
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-"""
-Fields for Mailbox and Message.
-"""
-from leap.mail.imap.parser import MBoxParser
-
-
-class WithMsgFields(object):
-    """
-    Container class for class-attributes to be shared by
-    several message-related classes.
-    """
-    # indexing
-    CONTENT_HASH_KEY = "chash"
-    PAYLOAD_HASH_KEY = "phash"
-
-    # Internal representation of Message
-
-    # flags doc
-    UID_KEY = "uid"
-    MBOX_KEY = "mbox"
-    SEEN_KEY = "seen"
-    DEL_KEY = "deleted"
-    RECENT_KEY = "recent"
-    FLAGS_KEY = "flags"
-    MULTIPART_KEY = "multi"
-    SIZE_KEY = "size"
-
-    # headers
-    HEADERS_KEY = "headers"
-    DATE_KEY = "date"
-    SUBJECT_KEY = "subject"
-    PARTS_MAP_KEY = "part_map"
-    BODY_KEY = "body"  # link to phash of body
-    MSGID_KEY = "msgid"
-
-    # content
-    LINKED_FROM_KEY = "lkf"  # XXX not implemented yet!
-    RAW_KEY = "raw"
-    CTYPE_KEY = "ctype"
-
-    # Mailbox specific keys
-    CLOSED_KEY = "closed"
-    CREATED_KEY = "created"
-    SUBSCRIBED_KEY = "subscribed"
-    RW_KEY = "rw"
-    LAST_UID_KEY = "lastuid"
-    RECENTFLAGS_KEY = "rct"
-    HDOCS_SET_KEY = "hdocset"
-
-    # Document Type, for indexing
-    TYPE_KEY = "type"
-    TYPE_MBOX_VAL = "mbox"
-    TYPE_FLAGS_VAL = "flags"
-    TYPE_HEADERS_VAL = "head"
-    TYPE_CONTENT_VAL = "cnt"
-    TYPE_RECENT_VAL = "rct"
-    TYPE_HDOCS_SET_VAL = "hdocset"
-
-    INBOX_VAL = "inbox"
-
-    # Flags in Mailbox and Message
-    SEEN_FLAG = "\\Seen"
-    RECENT_FLAG = "\\Recent"
-    ANSWERED_FLAG = "\\Answered"
-    FLAGGED_FLAG = "\\Flagged"  # yo dawg
-    DELETED_FLAG = "\\Deleted"
-    DRAFT_FLAG = "\\Draft"
-    NOSELECT_FLAG = "\\Noselect"
-    LIST_FLAG = "List"  # is this OK? (no \. ie, no system flag)
-
-    # Fields in mail object
-    SUBJECT_FIELD = "Subject"
-    DATE_FIELD = "Date"
-
-    # Index  types
-    # --------------
-
-    TYPE_IDX = 'by-type'
-    TYPE_MBOX_IDX = 'by-type-and-mbox'
-    TYPE_MBOX_UID_IDX = 'by-type-and-mbox-and-uid'
-    TYPE_SUBS_IDX = 'by-type-and-subscribed'
-    TYPE_MSGID_IDX = 'by-type-and-message-id'
-    TYPE_MBOX_SEEN_IDX = 'by-type-and-mbox-and-seen'
-    TYPE_MBOX_RECT_IDX = 'by-type-and-mbox-and-recent'
-    TYPE_MBOX_DEL_IDX = 'by-type-and-mbox-and-deleted'
-    TYPE_MBOX_C_HASH_IDX = 'by-type-and-mbox-and-contenthash'
-    TYPE_C_HASH_IDX = 'by-type-and-contenthash'
-    TYPE_C_HASH_PART_IDX = 'by-type-and-contenthash-and-partnumber'
-    TYPE_P_HASH_IDX = 'by-type-and-payloadhash'
-
-    # Tomas created the `recent and seen index`, but the semantic is not too
-    # correct since the recent flag is volatile.
-    TYPE_MBOX_RECT_SEEN_IDX = 'by-type-and-mbox-and-recent-and-seen'
-
-    # Soledad index for incoming mail, without decrypting errors.
-    JUST_MAIL_IDX = "just-mail"
-    # XXX the backward-compatible index, will be deprecated at 0.7
-    JUST_MAIL_COMPAT_IDX = "just-mail-compat"
-
-    INCOMING_KEY = "incoming"
-    ERROR_DECRYPTING_KEY = "errdecr"
-
-    KTYPE = TYPE_KEY
-    MBOX_VAL = TYPE_MBOX_VAL
-    CHASH_VAL = CONTENT_HASH_KEY
-    PHASH_VAL = PAYLOAD_HASH_KEY
-
-    INDEXES = {
-        # generic
-        TYPE_IDX: [KTYPE],
-        TYPE_MBOX_IDX: [KTYPE, MBOX_VAL],
-        TYPE_MBOX_UID_IDX: [KTYPE, MBOX_VAL, UID_KEY],
-
-        # mailboxes
-        TYPE_SUBS_IDX: [KTYPE, 'bool(subscribed)'],
-
-        # fdocs uniqueness
-        TYPE_MBOX_C_HASH_IDX: [KTYPE, MBOX_VAL, CHASH_VAL],
-
-        # headers doc - search by msgid.
-        TYPE_MSGID_IDX: [KTYPE, MSGID_KEY],
-
-        # content, headers doc
-        TYPE_C_HASH_IDX: [KTYPE, CHASH_VAL],
-
-        # attachment payload dedup
-        TYPE_P_HASH_IDX: [KTYPE, PHASH_VAL],
-
-        # messages
-        TYPE_MBOX_SEEN_IDX: [KTYPE, MBOX_VAL, 'bool(seen)'],
-        TYPE_MBOX_RECT_IDX: [KTYPE, MBOX_VAL, 'bool(recent)'],
-        TYPE_MBOX_DEL_IDX: [KTYPE, MBOX_VAL, 'bool(deleted)'],
-        TYPE_MBOX_RECT_SEEN_IDX: [KTYPE, MBOX_VAL,
-                                  'bool(recent)', 'bool(seen)'],
-
-        # incoming queue
-        JUST_MAIL_IDX: [INCOMING_KEY,
-                        "bool(%s)" % (ERROR_DECRYPTING_KEY,)],
-
-        # the backward-compatible index, will be deprecated at 0.7
-        JUST_MAIL_COMPAT_IDX: [INCOMING_KEY],
-    }
-
-    MBOX_KEY = MBOX_VAL
-
-    EMPTY_MBOX = {
-        TYPE_KEY: MBOX_KEY,
-        TYPE_MBOX_VAL: MBoxParser.INBOX_NAME,
-        SUBJECT_KEY: "",
-        FLAGS_KEY: [],
-        CLOSED_KEY: False,
-        SUBSCRIBED_KEY: False,
-        RW_KEY: 1,
-        LAST_UID_KEY: 0
-    }
-
-fields = WithMsgFields  # alias for convenience
diff --git a/src/leap/mail/imap/index.py b/src/leap/mail/imap/index.py
deleted file mode 100644
index 5f0919a..0000000
--- a/src/leap/mail/imap/index.py
+++ /dev/null
@@ -1,69 +0,0 @@
-# -*- coding: utf-8 -*-
-# index.py
-# Copyright (C) 2013 LEAP
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-"""
-Index for SoledadBackedAccount, Mailbox and Messages.
-"""
-import logging
-
-from leap.common.check import leap_assert, leap_assert_type
-
-from leap.mail.imap.fields import fields
-
-
-logger = logging.getLogger(__name__)
-
-
-class IndexedDB(object):
-    """
-    Methods dealing with the index.
-
-    This is a MixIn that needs access to the soledad instance,
-    and also assumes that a INDEXES attribute is accessible to the instance.
-
-    INDEXES must be a dictionary of type:
-    {'index-name': ['field1', 'field2']}
-    """
-    # TODO we might want to move this to soledad itself, check
-
-    def initialize_db(self):
-        """
-        Initialize the database.
-        """
-        leap_assert(self._soledad,
-                    "Need a soledad attribute accesible in the instance")
-        leap_assert_type(self.INDEXES, dict)
-
-        # Ask the database for currently existing indexes.
-        if not self._soledad:
-            logger.debug("NO SOLEDAD ON IMAP INITIALIZATION")
-            return
-        db_indexes = dict()
-        if self._soledad is not None:
-            db_indexes = dict(self._soledad.list_indexes())
-        for name, expression in fields.INDEXES.items():
-            if name not in db_indexes:
-                # The index does not yet exist.
-                self._soledad.create_index(name, *expression)
-                continue
-
-            if expression == db_indexes[name]:
-                # The index exists and is up to date.
-                continue
-            # The index exists but the definition is not what expected, so we
-            # delete it and add the proper index expression.
-            self._soledad.delete_index(name)
-            self._soledad.create_index(name, *expression)
diff --git a/src/leap/mail/imap/interfaces.py b/src/leap/mail/imap/interfaces.py
deleted file mode 100644
index c906278..0000000
--- a/src/leap/mail/imap/interfaces.py
+++ /dev/null
@@ -1,94 +0,0 @@
-# -*- coding: utf-8 -*-
-# interfaces.py
-# Copyright (C) 2014 LEAP
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-"""
-Interfaces for the IMAP module.
-"""
-from zope.interface import Interface, Attribute
-
-
-class IMessageContainer(Interface):
-    """
-    I am a container around the different documents that a message
-    is split into.
-    """
-    fdoc = Attribute('The flags document for this message, if any.')
-    hdoc = Attribute('The headers document for this message, if any.')
-    cdocs = Attribute('The dict of content documents for this message, '
-                      'if any.')
-
-    def walk(self):
-        """
-        Return an iterator to the docs for all the parts.
-
-        :rtype: iterator
-        """
-
-
-class IMessageStore(Interface):
-    """
-    I represent a generic storage for LEAP Messages.
-    """
-
-    def create_message(self, mbox, uid, message):
-        """
-        Put the passed message into this IMessageStore.
-
-        :param mbox: the mbox this message belongs.
-        :param uid: the UID that identifies this message in this mailbox.
-        :param message: a IMessageContainer implementor.
-        """
-
-    def put_message(self, mbox, uid, message):
-        """
-        Put the passed message into this IMessageStore.
-
-        :param mbox: the mbox this message belongs.
-        :param uid: the UID that identifies this message in this mailbox.
-        :param message: a IMessageContainer implementor.
-        """
-
-    def remove_message(self, mbox, uid):
-        """
-        Remove the given message from this IMessageStore.
-
-        :param mbox: the mbox this message belongs.
-        :param uid: the UID that identifies this message in this mailbox.
-        """
-
-    def get_message(self, mbox, uid):
-        """
-        Get a IMessageContainer for the given mbox and uid combination.
-
-        :param mbox: the mbox this message belongs.
-        :param uid: the UID that identifies this message in this mailbox.
-        :return: IMessageContainer
-        """
-
-
-class IMessageStoreWriter(Interface):
-    """
-    I represent a storage that is able to write its contents to another
-    different IMessageStore.
-    """
-
-    def write_messages(self, store):
-        """
-        Write the documents in this IMessageStore to a different
-        storage. Usually this will be done from a MemoryStorage to a DbStorage.
-
-        :param store: another IMessageStore implementor.
-        """
diff --git a/src/leap/mail/imap/mailbox.py b/src/leap/mail/imap/mailbox.py
index 34cf535..c52a2e3 100644
--- a/src/leap/mail/imap/mailbox.py
+++ b/src/leap/mail/imap/mailbox.py
@@ -1,6 +1,6 @@
 # *- coding: utf-8 -*-
 # mailbox.py
-# Copyright (C) 2013 LEAP
+# Copyright (C) 2013-2015 LEAP
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -15,36 +15,38 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
-Soledad Mailbox.
+IMAP Mailbox.
 """
-import copy
-import threading
+import re
 import logging
-import StringIO
-import cStringIO
 import os
+import cStringIO
+import StringIO
+import time
 
 from collections import defaultdict
+from email.utils import formatdate
 
 from twisted.internet import defer
-from twisted.internet.task import deferLater
+from twisted.internet import reactor
 from twisted.python import log
 
 from twisted.mail import imap4
 from zope.interface import implements
 
-from leap.common import events as leap_events
-from leap.common.events.events_pb2 import IMAP_UNREAD_MAIL
-from leap.common.check import leap_assert, leap_assert_type
-from leap.mail.decorators import deferred_to_thread
-from leap.mail.utils import empty
-from leap.mail.imap.fields import WithMsgFields, fields
-from leap.mail.imap.messages import MessageCollection
-from leap.mail.imap.messageparts import MessageWrapper
-from leap.mail.imap.parser import MBoxParser
+from leap.common.check import leap_assert
+from leap.common.check import leap_assert_type
+from leap.mail.constants import INBOX_NAME, MessageFlags
+from leap.mail.imap.messages import IMAPMessage
 
 logger = logging.getLogger(__name__)
 
+# TODO LIST
+# [ ] Restore profile_cmd instrumentation
+# [ ] finish the implementation of IMailboxListener
+# [ ] implement the rest of ISearchableMailbox
+
+
 """
 If the environment variable `LEAP_SKIPNOTIFY` is set, we avoid
 notifying clients of new messages. Use during stress tests.
@@ -53,7 +55,6 @@ NOTIFY_NEW = not os.environ.get('LEAP_SKIPNOTIFY', False)
 PROFILE_CMD = os.environ.get('LEAP_PROFILE_IMAPCMD', False)
 
 if PROFILE_CMD:
-    import time
 
     def _debugProfiling(result, cmdname, start):
         took = (time.time() - start) * 1000
@@ -70,33 +71,32 @@ if PROFILE_CMD:
         d.addCallback(_debugProfiling, name, time.time())
         d.addErrback(lambda f: log.msg(f.getTraceback()))
 
+INIT_FLAGS = (MessageFlags.SEEN_FLAG, MessageFlags.ANSWERED_FLAG,
+              MessageFlags.FLAGGED_FLAG, MessageFlags.DELETED_FLAG,
+              MessageFlags.DRAFT_FLAG, MessageFlags.RECENT_FLAG,
+              MessageFlags.LIST_FLAG)
 
-class SoledadMailbox(WithMsgFields, MBoxParser):
+
+class IMAPMailbox(object):
     """
     A Soledad-backed IMAP mailbox.
 
     Implements the high-level method needed for the Mailbox interfaces.
-    The low-level database methods are contained in MessageCollection class,
-    which we instantiate and make accessible in the `messages` attribute.
+    The low-level database methods are contained in the generic
+    MessageCollection class. We receive an instance of it and it is made
+    accessible in the `collection` attribute.
     """
     implements(
         imap4.IMailbox,
         imap4.IMailboxInfo,
-        imap4.ICloseableMailbox,
         imap4.ISearchableMailbox,
+        # XXX I think we do not need to implement CloseableMailbox, do we?
+        # We could remove ourselves from the collectionListener, although I
+        # think it simply will be garbage collected.
+        # imap4.ICloseableMailbox
         imap4.IMessageCopier)
 
-    # XXX should finish the implementation of IMailboxListener
-    # XXX should completely implement ISearchableMailbox too
-
-    messages = None
-    _closed = False
-
-    INIT_FLAGS = (WithMsgFields.SEEN_FLAG, WithMsgFields.ANSWERED_FLAG,
-                  WithMsgFields.FLAGGED_FLAG, WithMsgFields.DELETED_FLAG,
-                  WithMsgFields.DRAFT_FLAG, WithMsgFields.RECENT_FLAG,
-                  WithMsgFields.LIST_FLAG)
-    flags = None
+    init_flags = INIT_FLAGS
 
     CMD_MSG = "MESSAGES"
     CMD_RECENT = "RECENT"
@@ -104,65 +104,25 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
     CMD_UIDVALIDITY = "UIDVALIDITY"
     CMD_UNSEEN = "UNSEEN"
 
-    # FIXME we should turn this into a datastructure with limited capacity
+    # TODO we should turn this into a datastructure with limited capacity
     _listeners = defaultdict(set)
 
-    next_uid_lock = threading.Lock()
-    last_uid_lock = threading.Lock()
-
-    # TODO unify all the `primed` dicts
-    _fdoc_primed = {}
-    _last_uid_primed = {}
-    _known_uids_primed = {}
-
-    def __init__(self, mbox, soledad, memstore, rw=1):
+    def __init__(self, collection, rw=1):
         """
-        SoledadMailbox constructor. Needs to get passed a name, plus a
-        Soledad instance.
-
-        :param mbox: the mailbox name
-        :type mbox: str
-
-        :param soledad: a Soledad instance.
-        :type soledad: Soledad
-
-        :param memstore: a MemoryStore instance
-        :type memstore: MemoryStore
+        :param collection: instance of MessageCollection
+        :type collection: MessageCollection
 
         :param rw: read-and-write flag for this mailbox
         :type rw: int
         """
-        leap_assert(mbox, "Need a mailbox name to initialize")
-        leap_assert(soledad, "Need a soledad instance to initialize")
-
-        from twisted.internet import reactor
-        self.reactor = reactor
-
-        self.mbox = self._parse_mailbox_name(mbox)
         self.rw = rw
-
-        self._soledad = soledad
-        self._memstore = memstore
-
-        self.messages = MessageCollection(
-            mbox=mbox, soledad=self._soledad, memstore=self._memstore)
-
         self._uidvalidity = None
+        self.collection = collection
+        self.collection.addListener(self)
 
-        # XXX careful with this get/set (it would be
-        # hitting db unconditionally, move to memstore too)
-        # Now it's returning a fixed amount of flags from mem
-        # as a workaround.
-        if not self.getFlags():
-            self.setFlags(self.INIT_FLAGS)
-
-        if self._memstore:
-            self.prime_known_uids_to_memstore()
-            self.prime_last_uid_to_memstore()
-            self.prime_flag_docs_to_memstore()
-
-        # purge memstore from empty fdocs.
-        self._memstore.purge_fdoc_store(mbox)
+    @property
+    def mbox_name(self):
+        return self.collection.mbox_name
 
     @property
     def listeners(self):
@@ -175,11 +135,17 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
 
         :rtype: set
         """
-        return self._listeners[self.mbox]
+        return self._listeners[self.mbox_name]
+
+    def get_imap_message(self, message):
+        d = defer.Deferred()
+        IMAPMessage(message, store=self.collection.store, d=d)
+        return d
 
-    # TODO this grows too crazily when many instances are fired, like
+    # FIXME this grows too crazily when many instances are fired, like
     # during imaptest stress testing. Should have a queue of limited size
     # instead.
+
     def addListener(self, listener):
         """
         Add a listener to the listeners queue.
@@ -192,8 +158,10 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
         if not NOTIFY_NEW:
             return
 
-        logger.debug('adding mailbox listener: %s' % listener)
-        self.listeners.add(listener)
+        listeners = self.listeners
+        logger.debug('adding mailbox listener: %s. Total: %s' % (
+            listener, len(listeners)))
+        listeners.add(listener)
 
     def removeListener(self, listener):
         """
@@ -204,17 +172,6 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
         """
         self.listeners.remove(listener)
 
-    def _get_mbox_doc(self):
-        """
-        Return mailbox document.
-
-        :return: A SoledadDocument containing this mailbox, or None if
-                 the query failed.
-        :rtype: SoledadDocument or None.
-        """
-        return self._memstore.get_mbox_doc(self.mbox)
-
-    # XXX the memstore->soledadstore method in memstore is not complete
     def getFlags(self):
         """
         Returns the flags defined for this mailbox.
@@ -222,12 +179,12 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
         :returns: tuple of flags for this mailbox
         :rtype: tuple of str
         """
-        flags = self._memstore.get_mbox_flags(self.mbox)
+        flags = self.collection.mbox_wrapper.flags
         if not flags:
-            flags = self.INIT_FLAGS
-        return map(str, flags)
+            flags = self.init_flags
+        flags_str = map(str, flags)
+        return flags_str
 
-    # XXX the memstore->soledadstore method in memstore is not complete
     def setFlags(self, flags):
         """
         Sets flags for this mailbox.
@@ -236,87 +193,10 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
         :type flags: tuple of str
         """
         # XXX this is setting (overriding) old flags.
+        # Better pass a mode flag
         leap_assert(isinstance(flags, tuple),
                     "flags expected to be a tuple")
-        self._memstore.set_mbox_flags(self.mbox, flags)
-
-    # XXX SHOULD BETTER IMPLEMENT ADD_FLAG, REMOVE_FLAG.
-
-    def _get_closed(self):
-        """
-        Return the closed attribute for this mailbox.
-
-        :return: True if the mailbox is closed
-        :rtype: bool
-        """
-        return self._memstore.get_mbox_closed(self.mbox)
-
-    def _set_closed(self, closed):
-        """
-        Set the closed attribute for this mailbox.
-
-        :param closed: the state to be set
-        :type closed: bool
-        """
-        self._memstore.set_mbox_closed(self.mbox, closed)
-
-    closed = property(
-        _get_closed, _set_closed, doc="Closed attribute.")
-
-    def _get_last_uid(self):
-        """
-        Return the last uid for this mailbox.
-        If we have a memory store, the last UID will be the highest
-        recorded UID in the message store, or a counter cached from
-        the mailbox document in soledad if this is higher.
-
-        :return: the last uid for messages in this mailbox
-        :rtype: int
-        """
-        last = self._memstore.get_last_uid(self.mbox)
-        logger.debug("last uid for %s: %s (from memstore)" % (
-            repr(self.mbox), last))
-        return last
-
-    last_uid = property(
-        _get_last_uid, doc="Last_UID attribute.")
-
-    def prime_last_uid_to_memstore(self):
-        """
-        Prime memstore with last_uid value
-        """
-        primed = self._last_uid_primed.get(self.mbox, False)
-        if not primed:
-            mbox = self._get_mbox_doc()
-            if mbox is None:
-                # memory-only store
-                return
-            last = mbox.content.get('lastuid', 0)
-            logger.info("Priming Soledad last_uid to %s" % (last,))
-            self._memstore.set_last_soledad_uid(self.mbox, last)
-            self._last_uid_primed[self.mbox] = True
-
-    def prime_known_uids_to_memstore(self):
-        """
-        Prime memstore with the set of all known uids.
-
-        We do this to be able to filter the requests efficiently.
-        """
-        primed = self._known_uids_primed.get(self.mbox, False)
-        if not primed:
-            known_uids = self.messages.all_soledad_uid_iter()
-            self._memstore.set_known_uids(self.mbox, known_uids)
-            self._known_uids_primed[self.mbox] = True
-
-    def prime_flag_docs_to_memstore(self):
-        """
-        Prime memstore with all the flags documents.
-        """
-        primed = self._fdoc_primed.get(self.mbox, False)
-        if not primed:
-            all_flag_docs = self.messages.get_all_soledad_flag_docs()
-            self._memstore.load_flag_docs(self.mbox, all_flag_docs)
-            self._fdoc_primed[self.mbox] = True
+        return self.collection.set_mbox_attr("flags", flags)
 
     def getUIDValidity(self):
         """
@@ -325,14 +205,9 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
         :return: unique validity identifier
         :rtype: int
         """
-        if self._uidvalidity is None:
-            mbox = self._get_mbox_doc()
-            if mbox is None:
-                return 0
-            self._uidvalidity = mbox.content.get(self.CREATED_KEY, 1)
-        return self._uidvalidity
+        return self.collection.get_mbox_attr("created")
 
-    def getUID(self, message):
+    def getUID(self, message_number):
         """
         Return the UID of a message in the mailbox
 
@@ -340,14 +215,15 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
         but in the future will be useful to get absolute UIDs from
         message sequence numbers.
 
-        :param message: the message uid
+        :param message: the message sequence number.
         :type message: int
 
         :rtype: int
+        :return: the UID of the message.
         """
-        msg = self.messages.get_msg_by_uid(message)
-        if msg is not None:
-            return msg.getUID()
+        # TODO support relative sequences. The (imap) message should
+        # receive a sequence number attribute: a deferred is not expected
+        return message_number
 
     def getUIDNext(self):
         """
@@ -355,23 +231,20 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
         mailbox. Currently it returns the higher UID incremented by
         one.
 
-        We increment the next uid *each* time this function gets called.
-        In this way, there will be gaps if the message with the allocated
-        uid cannot be saved. But that is preferable to having race conditions
-        if we get to parallel message adding.
-
-        :rtype: int
+        :return: deferred with int
+        :rtype: Deferred
         """
-        with self.next_uid_lock:
-            return self.last_uid + 1
+        d = self.collection.get_uid_next()
+        return d
 
     def getMessageCount(self):
         """
         Returns the total count of messages in this mailbox.
 
-        :rtype: int
+        :return: deferred with int
+        :rtype: Deferred
         """
-        return self.messages.count()
+        return self.collection.count()
 
     def getUnseenCount(self):
         """
@@ -380,7 +253,7 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
         :return: count of messages flagged `unseen`
         :rtype: int
         """
-        return self.messages.count_unseen()
+        return self.collection.count_unseen()
 
     def getRecentCount(self):
         """
@@ -389,7 +262,7 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
         :return: count of messages flagged `recent`
         :rtype: int
         """
-        return self.messages.count_recent()
+        return self.collection.count_recent()
 
     def isWriteable(self):
         """
@@ -398,6 +271,8 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
         :return: 1 if mailbox is read-writeable, 0 otherwise.
         :rtype: int
         """
+        # XXX We don't need to store it in the mbox doc, do we?
+        # return int(self.collection.get_mbox_attr('rw'))
         return self.rw
 
     def getHierarchicalDelimiter(self):
@@ -417,19 +292,26 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
         :type names: iter
         """
         r = {}
+        maybe = defer.maybeDeferred
         if self.CMD_MSG in names:
-            r[self.CMD_MSG] = self.getMessageCount()
+            r[self.CMD_MSG] = maybe(self.getMessageCount)
         if self.CMD_RECENT in names:
-            r[self.CMD_RECENT] = self.getRecentCount()
+            r[self.CMD_RECENT] = maybe(self.getRecentCount)
         if self.CMD_UIDNEXT in names:
-            r[self.CMD_UIDNEXT] = self.last_uid + 1
+            r[self.CMD_UIDNEXT] = maybe(self.getUIDNext)
         if self.CMD_UIDVALIDITY in names:
-            r[self.CMD_UIDVALIDITY] = self.getUIDValidity()
+            r[self.CMD_UIDVALIDITY] = maybe(self.getUIDValidity)
         if self.CMD_UNSEEN in names:
-            r[self.CMD_UNSEEN] = self.getUnseenCount()
-        return defer.succeed(r)
+            r[self.CMD_UNSEEN] = maybe(self.getUnseenCount)
+
+        def as_a_dict(values):
+            return dict(zip(r.keys(), values))
 
-    def addMessage(self, message, flags, date=None, notify_on_disk=False):
+        d = defer.gatherResults(r.values())
+        d.addCallback(as_a_dict)
+        return d
+
+    def addMessage(self, message, flags, date=None, notify_just_mdoc=True):
         """
         Adds a message to this mailbox.
 
@@ -440,51 +322,69 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
         :type flags: list of str
 
         :param date: timestamp
-        :type date: str
-
-        :return: a deferred that evals to None
-        """
+        :type date: str, or None
+
+        :param notify_just_mdoc:
+            boolean passed to the wrapper.create method, to indicate whether
+            we're insterested in being notified right after the mdoc has been
+            written (as it's the first doc to be written, and quite small, this
+            is faster, though potentially unsafe).
+            Setting it to True improves a *lot* the responsiveness of the
+            APPENDS: we just need to be notified when the mdoc is saved, and
+            let's just expect that the other parts are doing just fine.  This
+            will not catch any errors when the inserts of the other parts
+            fail, but on the other hand allows us to return very quickly,
+            which seems a good compromise given that we have to serialize the
+            appends.
+            However, some operations like the saving of drafts need to wait for
+            all the parts to be saved, so if some heuristics are met down in
+            the call chain a Draft message will unconditionally set this flag
+            to False, and therefore ignoring the setting of this flag here.
+        :type notify_just_mdoc: bool
+
+        :return: a deferred that will be triggered with the UID of the added
+                 message.
+        """
+        # TODO should raise ReadOnlyMailbox if not rw.
         # TODO have a look at the cases for internal date in the rfc
+        # XXX we could treat the message as an IMessage from here
+
+        # TODO change notify_just_mdoc to something more meaningful, like
+        # fast_insert_notify?
+
+        # TODO  notify_just_mdoc *sometimes* make the append tests fail.
+        # have to find a better solution for this. A workaround could probably
+        # be to have a list of the ongoing deferreds related to append, so that
+        # we queue for later all the requests having to do with these.
+
+        # A better solution will probably involve implementing MULTIAPPEND
+        # extension or patching imap server to support pipelining.
+
         if isinstance(message, (cStringIO.OutputType, StringIO.StringIO)):
             message = message.getvalue()
 
-        # XXX we could treat the message as an IMessage from here
         leap_assert_type(message, basestring)
+
         if flags is None:
             flags = tuple()
         else:
             flags = tuple(str(flag) for flag in flags)
 
-        d = self._do_add_message(message, flags=flags, date=date,
-                                 notify_on_disk=notify_on_disk)
-        if PROFILE_CMD:
-            do_profile_cmd(d, "APPEND")
-
-        # XXX should review now that we're not using qtreactor.
-        # A better place for this would be  the COPY/APPEND dispatcher
-        # in server.py, but qtreactor hangs when I do that, so this seems
-        # to work fine for now.
-
-        def notifyCallback(x):
-            self.reactor.callLater(0, self.notify_new)
-            return x
+        if date is None:
+            date = formatdate(time.time())
 
-        d.addCallback(notifyCallback)
-        d.addErrback(lambda f: log.msg(f.getTraceback()))
-        return d
-
-    def _do_add_message(self, message, flags, date, notify_on_disk=False):
-        """
-        Calls to the messageCollection add_msg method.
-        Invoked from addMessage.
-        """
-        d = self.messages.add_msg(message, flags=flags, date=date,
-                                  notify_on_disk=notify_on_disk)
+        d = self.collection.add_msg(message, flags, date=date,
+                                    notify_just_mdoc=notify_just_mdoc)
+        d.addErrback(lambda failure: log.err(failure))
         return d
 
     def notify_new(self, *args):
         """
         Notify of new messages to all the listeners.
+        This will be called indirectly by the underlying collection, that will
+        notify this IMAPMailbox whenever there are changes in the number of
+        messages in the collection, since we have added ourselves to the
+        collection listeners.
 
         :param args: ignored.
         """
@@ -493,26 +393,36 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
 
         def cbNotifyNew(result):
             exists, recent = result
-            for l in self.listeners:
-                l.newMessages(exists, recent)
+            for listener in self.listeners:
+                listener.newMessages(exists, recent)
+
         d = self._get_notify_count()
         d.addCallback(cbNotifyNew)
-        d.addCallback(self.cb_signal_unread_to_ui)
+        d.addCallback(self.collection.cb_signal_unread_to_ui)
+        d.addErrback(lambda failure: log.err(failure))
 
-    @deferred_to_thread
     def _get_notify_count(self):
         """
         Get message count and recent count for this mailbox
         Executed in a separate thread. Called from notify_new.
 
-        :return: number of messages and number of recent messages.
-        :rtype: tuple
+        :return: a deferred that will fire with a tuple, with number of
+                 messages and number of recent messages.
+        :rtype: Deferred
         """
-        exists = self.getMessageCount()
-        recent = self.getRecentCount()
-        logger.debug("NOTIFY (%r): there are %s messages, %s recent" % (
-            self.mbox, exists, recent))
-        return exists, recent
+        d_exists = defer.maybeDeferred(self.getMessageCount)
+        d_recent = defer.maybeDeferred(self.getRecentCount)
+        d_list = [d_exists, d_recent]
+
+        def log_num_msg(result):
+            exists, recent = tuple(result)
+            logger.debug("NOTIFY (%r): there are %s messages, %s recent" % (
+                         self.mbox_name, exists, recent))
+            return result
+
+        d = defer.gatherResults(d_list)
+        d.addCallback(log_num_msg)
+        return d
 
     # commands, do not rename methods
 
@@ -522,31 +432,21 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
 
         Should cleanup resources, and set the \\Noselect flag
         on the mailbox.
+
         """
-        # XXX this will overwrite all the existing flags!
+        # XXX this will overwrite all the existing flags
         # should better simply addFlag
-        self.setFlags((self.NOSELECT_FLAG,))
-        self.deleteAllDocs()
+        self.setFlags((MessageFlags.NOSELECT_FLAG,))
 
-        # XXX removing the mailbox in situ for now,
-        # we should postpone the removal
+        def remove_mbox(_):
+            uuid = self.collection.mbox_uuid
+            d = self.collection.mbox_wrapper.delete(self.collection.store)
+            d.addCallback(
+                lambda _: self.collection.mbox_indexer.delete_table(uuid))
+            return d
 
-        # XXX move to memory store??
-        mbox_doc = self._get_mbox_doc()
-        if mbox_doc is None:
-            # memory-only store!
-            return
-        self._soledad.delete_doc(self._get_mbox_doc())
-
-    def _close_cb(self, result):
-        self.closed = True
-
-    def close(self):
-        """
-        Expunge and mark as closed
-        """
-        d = self.expunge()
-        d.addCallback(self._close_cb)
+        d = self.deleteAllDocs()
+        d.addCallback(remove_mbox)
         return d
 
     def expunge(self):
@@ -555,11 +455,35 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
         """
         if not self.isWriteable():
             raise imap4.ReadOnlyMailbox
-        d = defer.Deferred()
-        self._memstore.expunge(self.mbox, d)
+        return self.collection.delete_all_flagged()
+
+    def _get_message_fun(self, uid):
+        """
+        Return the proper method to get a message for this mailbox, depending
+        on the passed uid flag.
+
+        :param uid: If true, the IDs specified in the query are UIDs;
+                    otherwise they are message sequence IDs.
+        :type uid: bool
+        :rtype: callable
+        """
+        get_message_fun = [
+            self.collection.get_message_by_sequence_number,
+            self.collection.get_message_by_uid][uid]
+        return get_message_fun
+
+    def _get_messages_range(self, messages_asked, uid=True):
+
+        def get_range(messages_asked):
+            return self._filter_msg_seq(messages_asked)
+
+        d = defer.maybeDeferred(self._bound_seq, messages_asked, uid)
+        if uid:
+            d.addCallback(get_range)
+        d.addErrback(lambda f: log.err(f))
         return d
 
-    def _bound_seq(self, messages_asked):
+    def _bound_seq(self, messages_asked, uid):
         """
         Put an upper bound to a messages sequence if this is open.
 
@@ -567,15 +491,27 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
         :type messages_asked: MessageSet
         :rtype: MessageSet
         """
+
+        def set_last_uid(last_uid):
+            messages_asked.last = last_uid
+            return messages_asked
+
+        def set_last_seq(all_uid):
+            messages_asked.last = len(all_uid)
+            return messages_asked
+
         if not messages_asked.last:
             try:
                 iter(messages_asked)
             except TypeError:
                 # looks like we cannot iterate
-                try:
-                    messages_asked.last = self.last_uid
-                except ValueError:
-                    pass
+                if uid:
+                    d = self.collection.get_last_uid()
+                    d.addCallback(set_last_uid)
+                else:
+                    d = self.collection.all_uid_iter()
+                    d.addCallback(set_last_seq)
+                return d
         return messages_asked
 
     def _filter_msg_seq(self, messages_asked):
@@ -587,10 +523,16 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
         :type messages_asked: MessageSet
         :rtype: set
         """
-        set_asked = set(messages_asked)
-        set_exist = set(self.messages.all_uid_iter())
-        seq_messg = set_asked.intersection(set_exist)
-        return seq_messg
+        # TODO we could pass the asked sequence to the indexer
+        # all_uid_iter, and bound the sql query instead.
+        def filter_by_asked(all_msg_uid):
+            set_asked = set(messages_asked)
+            set_exist = set(all_msg_uid)
+            return set_asked.intersection(set_exist)
+
+        d = self.collection.all_uid_iter()
+        d.addCallback(filter_by_asked)
+        return d
 
     def fetch(self, messages_asked, uid):
         """
@@ -607,54 +549,48 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
                     otherwise.
         :type uid: bool
 
-        :rtype: deferred
-        """
-        d = defer.Deferred()
-        self.reactor.callInThread(self._do_fetch, messages_asked, uid, d)
-        if PROFILE_CMD:
-            do_profile_cmd(d, "FETCH")
-        d.addCallback(self.cb_signal_unread_to_ui)
+        :rtype: deferred with a generator that yields...
+        """
+        get_msg_fun = self._get_message_fun(uid)
+        getimapmsg = self.get_imap_message
+
+        def get_imap_messages_for_range(msg_range):
+
+            def _get_imap_msg(messages):
+                d_imapmsg = []
+                for msg in messages:
+                    d_imapmsg.append(getimapmsg(msg))
+                return defer.gatherResults(d_imapmsg, consumeErrors=True)
+
+            def _zip_msgid(imap_messages):
+                zipped = zip(
+                    list(msg_range), imap_messages)
+                return (item for item in zipped)
+
+            # XXX not called??
+            def _unset_recent(sequence):
+                reactor.callLater(0, self.unset_recent_flags, sequence)
+                return sequence
+
+            d_msg = []
+            for msgid in msg_range:
+                # XXX We want cdocs because we "probably" are asked for the
+                # body. We should be smarter at do_FETCH and pass a parameter
+                # to this method in order not to prefetch cdocs if they're not
+                # going to be used.
+                d_msg.append(get_msg_fun(msgid, get_cdocs=True))
+
+            d = defer.gatherResults(d_msg, consumeErrors=True)
+            d.addCallback(_get_imap_msg)
+            d.addCallback(_zip_msgid)
+            d.addErrback(lambda failure: log.err(failure))
+            return d
+
+        d = self._get_messages_range(messages_asked, uid)
+        d.addCallback(get_imap_messages_for_range)
+        d.addErrback(lambda failure: log.err(failure))
         return d
 
-    # called in thread
-    def _do_fetch(self, messages_asked, uid, d):
-        """
-        :param messages_asked: IDs of the messages to retrieve information
-                               about
-        :type messages_asked: MessageSet
-
-        :param uid: If true, the IDs are UIDs. They are message sequence IDs
-                    otherwise.
-        :type uid: bool
-        :param d: deferred whose callback will be called with result.
-        :type d: Deferred
-
-        :rtype: A tuple of two-tuples of message sequence numbers and
-                LeapMessage
-        """
-        # For the moment our UID is sequential, so we
-        # can treat them all the same.
-        # Change this to the flag that twisted expects when we
-        # switch to content-hash based index + local UID table.
-
-        sequence = False
-        # sequence = True if uid == 0 else False
-
-        messages_asked = self._bound_seq(messages_asked)
-        seq_messg = self._filter_msg_seq(messages_asked)
-        getmsg = lambda uid: self.messages.get_msg_by_uid(uid)
-
-        # for sequence numbers (uid = 0)
-        if sequence:
-            logger.debug("Getting msg by index: INEFFICIENT call!")
-            raise NotImplementedError
-        else:
-            got_msg = ((msgid, getmsg(msgid)) for msgid in seq_messg)
-            result = ((msgid, msg) for msgid, msg in got_msg
-                      if msg is not None)
-            self.reactor.callLater(0, self.unset_recent_flags, seq_messg)
-            self.reactor.callFromThread(d.callback, result)
-
     def fetch_flags(self, messages_asked, uid):
         """
         A fast method to fetch all flags, tricking just the
@@ -679,13 +615,23 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
                 MessagePart.
         :rtype: tuple
         """
+        # is_sequence = True if uid == 0 else False
+        # XXX FIXME -----------------------------------------------------
+        # imap/tests, or muas like mutt, it will choke until we implement
+        # sequence numbers. This is an easy hack meanwhile.
+        is_sequence = False
+        # ---------------------------------------------------------------
+
+        if is_sequence:
+            raise NotImplementedError(
+                "FETCH FLAGS NOT IMPLEMENTED FOR MESSAGE SEQUENCE NUMBERS YET")
+
         d = defer.Deferred()
-        self.reactor.callInThread(self._do_fetch_flags, messages_asked, uid, d)
+        reactor.callLater(0, self._do_fetch_flags, messages_asked, uid, d)
         if PROFILE_CMD:
             do_profile_cmd(d, "FETCH-ALL-FLAGS")
         return d
 
-    # called in thread
     def _do_fetch_flags(self, messages_asked, uid, d):
         """
         :param messages_asked: IDs of the messages to retrieve information
@@ -698,8 +644,8 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
         :param d: deferred whose callback will be called with result.
         :type d: Deferred
 
-        :rtype: A tuple of two-tuples of message sequence numbers and
-                flagsPart
+        :rtype: A generator that yields two-tuples of message sequence numbers
+                and flagsPart
         """
         class flagsPart(object):
             def __init__(self, uid, flags):
@@ -712,13 +658,28 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
             def getFlags(self):
                 return map(str, self.flags)
 
-        messages_asked = self._bound_seq(messages_asked)
-        seq_messg = self._filter_msg_seq(messages_asked)
-
-        all_flags = self._memstore.all_flags(self.mbox)
-        result = ((msgid, flagsPart(
-            msgid, all_flags.get(msgid, tuple()))) for msgid in seq_messg)
-        self.reactor.callFromThread(d.callback, result)
+        def pack_flags(result):
+            _uid, _flags = result
+            return _uid, flagsPart(_uid, _flags)
+
+        def get_flags_for_seq(sequence):
+            d_all_flags = []
+            for msgid in sequence:
+                # TODO implement sequence numbers here too
+                d_flags_per_uid = self.collection.get_flags_by_uid(msgid)
+                d_flags_per_uid.addCallback(pack_flags)
+                d_all_flags.append(d_flags_per_uid)
+            gotflags = defer.gatherResults(d_all_flags)
+            gotflags.addCallback(get_uid_flag_generator)
+            return gotflags
+
+        def get_uid_flag_generator(result):
+            generator = (item for item in result)
+            d.callback(generator)
+
+        d_seq = self._get_messages_range(messages_asked, uid)
+        d_seq.addCallback(get_flags_for_seq)
+        return d_seq
 
     def fetch_headers(self, messages_asked, uid):
         """
@@ -744,7 +705,11 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
                 MessagePart.
         :rtype: tuple
         """
-        # TODO how often is thunderbird doing this?
+        # TODO implement sequences
+        is_sequence = True if uid == 0 else False
+        if is_sequence:
+            raise NotImplementedError(
+                "FETCH HEADERS NOT IMPLEMENTED FOR SEQUENCE NUMBER YET")
 
         class headersPart(object):
             def __init__(self, uid, headers):
@@ -769,29 +734,6 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
             for msgid in seq_messg)
         return result
 
-    def cb_signal_unread_to_ui(self, result):
-        """
-        Sends unread event to ui.
-        Used as a callback in several commands.
-
-        :param result: ignored
-        """
-        d = self._get_unseen_deferred()
-        d.addCallback(self.__cb_signal_unread_to_ui)
-        return result
-
-    @deferred_to_thread
-    def _get_unseen_deferred(self):
-        return self.getUnseenCount()
-
-    def __cb_signal_unread_to_ui(self, unseen):
-        """
-        Send the unread signal to UI.
-        :param unseen: number of unseen messages.
-        :type unseen: int
-        """
-        leap_events.signal(IMAP_UNREAD_MAIL, str(unseen))
-
     def store(self, messages_asked, flags, mode, uid):
         """
         Sets the flags of one or more messages.
@@ -826,17 +768,18 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
             raise imap4.ReadOnlyMailbox
 
         d = defer.Deferred()
-        self.reactor.callLater(0, self._do_store, messages_asked, flags,
-                               mode, uid, d)
+        reactor.callLater(0, self._do_store, messages_asked, flags,
+                          mode, uid, d)
         if PROFILE_CMD:
             do_profile_cmd(d, "STORE")
-        d.addCallback(self.cb_signal_unread_to_ui)
-        d.addErrback(lambda f: log.msg(f.getTraceback()))
+
+        d.addCallback(self.collection.cb_signal_unread_to_ui)
+        d.addErrback(lambda f: log.err(f))
         return d
 
     def _do_store(self, messages_asked, flags, mode, uid, observer):
         """
-        Helper method, invoke set_flags method in the MessageCollection.
+        Helper method, invoke set_flags method in the IMAPMessageCollection.
 
         See the documentation for the `store` method for the parameters.
 
@@ -845,14 +788,31 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
                          done.
         :type observer: deferred
         """
-        # XXX implement also sequence (uid = 0)
-        # XXX we should prevent client from setting Recent flag?
+        # TODO we should prevent client from setting Recent flag
+        get_msg_fun = self._get_message_fun(uid)
         leap_assert(not isinstance(flags, basestring),
                     "flags cannot be a string")
         flags = tuple(flags)
-        messages_asked = self._bound_seq(messages_asked)
-        seq_messg = self._filter_msg_seq(messages_asked)
-        self.messages.set_flags(self.mbox, seq_messg, flags, mode, observer)
+
+        def set_flags_for_seq(sequence):
+            def return_result_dict(list_of_flags):
+                result = dict(zip(list(sequence), list_of_flags))
+                observer.callback(result)
+                return result
+
+            d_all_set = []
+            for msgid in sequence:
+                d = get_msg_fun(msgid)
+                d.addCallback(lambda msg: self.collection.update_flags(
+                    msg, flags, mode))
+                d_all_set.append(d)
+            got_flags_setted = defer.gatherResults(d_all_set)
+            got_flags_setted.addCallback(return_result_dict)
+            return got_flags_setted
+
+        d_seq = self._get_messages_range(messages_asked, uid)
+        d_seq.addCallback(set_flags_for_seq)
+        return d_seq
 
     # ISearchableMailbox
 
@@ -877,23 +837,24 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
         :rtype: C{list} or C{Deferred}
         """
         # TODO see if we can raise w/o interrupting flow
-        #:raise IllegalQueryError: Raised when query is not valid.
+        # :raise IllegalQueryError: Raised when query is not valid.
         # example query:
         #  ['UNDELETED', 'HEADER', 'Message-ID',
+        # XXX fixme, does not exist
         #   '52D44F11.9060107@dev.bitmask.net']
 
         # TODO hardcoding for now! -- we'll support generic queries later on
-        # but doing a quickfix for avoiding duplicat saves in the draft folder.
-        # See issue #4209
+        # but doing a quickfix for avoiding duplicate saves in the draft
+        # folder.  # See issue #4209
 
         if len(query) > 2:
             if query[1] == 'HEADER' and query[2].lower() == "message-id":
                 msgid = str(query[3]).strip()
                 logger.debug("Searching for %s" % (msgid,))
-                d = self.messages._get_uid_from_msgid(str(msgid))
-                d1 = defer.gatherResults([d])
-                # we want a list, so return it all the same
-                return d1
+
+                d = self.collection.get_uid_from_msgid(str(msgid))
+                d.addCallback(lambda result: [result])
+                return d
 
         # nothing implemented for any other query
         logger.warning("Cannot process query: %s" % (query,))
@@ -911,94 +872,19 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
                  uid when the copy succeed.
         :rtype: Deferred
         """
-        d = defer.Deferred()
         if PROFILE_CMD:
             do_profile_cmd(d, "COPY")
 
         # A better place for this would be  the COPY/APPEND dispatcher
         # in server.py, but qtreactor hangs when I do that, so this seems
         # to work fine for now.
-        d.addCallback(lambda r: self.reactor.callLater(0, self.notify_new))
-        deferLater(self.reactor, 0, self._do_copy, message, d)
-        return d
-
-    def _do_copy(self, message, observer):
-        """
-        Call invoked from the deferLater in `copy`. This will
-        copy the flags and header documents, and pass them to the
-        `create_message` method in the MemoryStore, together with
-        the observer deferred that we've been passed along.
-
-        :param message: an IMessage implementor
-        :type message: LeapMessage
-        :param observer: the deferred that will fire with the
-                         UID of the message
-        :type observer: Deferred
-        """
-        memstore = self._memstore
-
-        def createCopy(result):
-            exist, new_fdoc = result
-            if exist:
-                # Should we signal error on the callback?
-                logger.warning("Destination message already exists!")
-
-                # XXX I'm not sure if we should raise the
-                # errback. This actually rases an ugly warning
-                # in some muas like thunderbird.
-                # UID 0 seems a good convention for no uid.
-                observer.callback(0)
-            else:
-                mbox = self.mbox
-                uid_next = memstore.increment_last_soledad_uid(mbox)
-
-                new_fdoc[self.UID_KEY] = uid_next
-                new_fdoc[self.MBOX_KEY] = mbox
-
-                flags = list(new_fdoc[self.FLAGS_KEY])
-                flags.append(fields.RECENT_FLAG)
-                new_fdoc[self.FLAGS_KEY] = tuple(set(flags))
-
-                # FIXME set recent!
-
-                self._memstore.create_message(
-                    self.mbox, uid_next,
-                    MessageWrapper(new_fdoc),
-                    observer=observer,
-                    notify_on_disk=False)
-
-        d = self._get_msg_copy(message)
-        d.addCallback(createCopy)
-        d.addErrback(lambda f: log.msg(f.getTraceback()))
-
-    @deferred_to_thread
-    def _get_msg_copy(self, message):
-        """
-        Get a copy of the fdoc for this message, and check whether
-        it already exists.
-
-        :param message: an IMessage implementor
-        :type message: LeapMessage
-        :return: exist, new_fdoc
-        :rtype: tuple
-        """
-        # XXX  for clarity, this could be delegated to a
-        # MessageCollection mixin that implements copy too, and
-        # moved out of here.
-        msg = message
-        memstore = self._memstore
-
-        if empty(msg.fdoc):
-            logger.warning("Tried to copy a MSG with no fdoc")
-            return
-        new_fdoc = copy.deepcopy(msg.fdoc.content)
-        fdoc_chash = new_fdoc[fields.CONTENT_HASH_KEY]
+        # d.addCallback(lambda r: self.reactor.callLater(0, self.notify_new))
+        # deferLater(self.reactor, 0, self._do_copy, message, d)
+        # return d
 
-        dest_fdoc = memstore.get_fdoc_from_chash(
-            fdoc_chash, self.mbox)
-
-        exist = not empty(dest_fdoc)
-        return exist, new_fdoc
+        d = self.collection.copy_msg(message.message,
+                                     self.collection.mbox_uuid)
+        return d
 
     # convenience fun
 
@@ -1006,19 +892,42 @@ class SoledadMailbox(WithMsgFields, MBoxParser):
         """
         Delete all docs in this mailbox
         """
-        docs = self.messages.get_all_docs()
-        for doc in docs:
-            self.messages._soledad.delete_doc(doc)
+        # FIXME not implemented
+        return self.collection.delete_all_docs()
 
     def unset_recent_flags(self, uid_seq):
         """
         Unset Recent flag for a sequence of UIDs.
         """
-        self.messages.unset_recent_flags(uid_seq)
+        # FIXME not implemented
+        return self.collection.unset_recent_flags(uid_seq)
 
     def __repr__(self):
         """
         Representation string for this mailbox.
         """
-        return u"<SoledadMailbox: mbox '%s' (%s)>" % (
-            self.mbox, self.messages.count())
+        return u"<IMAPMailbox: mbox '%s' (%s)>" % (
+            self.mbox_name, self.collection.count())
+
+
+_INBOX_RE = re.compile(INBOX_NAME, re.IGNORECASE)
+
+
+def normalize_mailbox(name):
+    """
+    Return a normalized representation of the mailbox ``name``.
+
+    This method ensures that an eventual initial 'inbox' part of a
+    mailbox name is made uppercase.
+
+    :param name: the name of the mailbox
+    :type name: unicode
+
+    :rtype: unicode
+    """
+    # XXX maybe it would make sense to normalize common folders too:
+    # trash, sent, drafts, etc...
+    if _INBOX_RE.match(name):
+        # ensure inital INBOX is uppercase
+        return INBOX_NAME + name[len(INBOX_NAME):]
+    return name
diff --git a/src/leap/mail/imap/memorystore.py b/src/leap/mail/imap/memorystore.py
deleted file mode 100644
index e075394..0000000
--- a/src/leap/mail/imap/memorystore.py
+++ /dev/null
@@ -1,1333 +0,0 @@
-# -*- coding: utf-8 -*-
-# memorystore.py
-# Copyright (C) 2014 LEAP
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-"""
-In-memory transient store for a LEAPIMAPServer.
-"""
-import contextlib
-import logging
-import threading
-import weakref
-
-from collections import defaultdict
-from copy import copy
-
-from enum import Enum
-from twisted.internet import defer
-from twisted.internet import reactor
-from twisted.internet.task import LoopingCall
-from twisted.python import log
-from zope.interface import implements
-
-from leap.common.check import leap_assert_type
-from leap.mail import size
-from leap.mail.utils import empty, phash_iter
-from leap.mail.messageflow import MessageProducer
-from leap.mail.imap import interfaces
-from leap.mail.imap.fields import fields
-from leap.mail.imap.messageparts import MessagePartType, MessagePartDoc
-from leap.mail.imap.messageparts import RecentFlagsDoc
-from leap.mail.imap.messageparts import MessageWrapper
-from leap.mail.imap.messageparts import ReferenciableDict
-
-from leap.mail.decorators import deferred_to_thread
-
-logger = logging.getLogger(__name__)
-
-
-# The default period to do writebacks to the permanent
-# soledad storage, in seconds.
-SOLEDAD_WRITE_PERIOD = 15
-
-FDOC = MessagePartType.fdoc.name
-HDOC = MessagePartType.hdoc.name
-CDOCS = MessagePartType.cdocs.name
-DOCS_ID = MessagePartType.docs_id.name
-
-
-@contextlib.contextmanager
-def set_bool_flag(obj, att):
-    """
-    Set a boolean flag to True while we're doing our thing.
-    Just to let the world know.
-    """
-    setattr(obj, att, True)
-    try:
-        yield True
-    except RuntimeError as exc:
-        logger.exception(exc)
-    finally:
-        setattr(obj, att, False)
-
-
-DirtyState = Enum("DirtyState", "none dirty new")
-
-
-class MemoryStore(object):
-    """
-    An in-memory store to where we can write the different parts that
-    we split the messages into and buffer them until we write them to the
-    permanent storage.
-
-    It uses MessageWrapper instances to represent the message-parts, which are
-    indexed by mailbox name and UID.
-
-    It also can be passed a permanent storage as a paremeter (any implementor
-    of IMessageStore, in this case a SoledadStore). In this case, a periodic
-    dump of the messages stored in memory will be done. The period of the
-    writes to the permanent storage is controled by the write_period parameter
-    in the constructor.
-    """
-    implements(interfaces.IMessageStore,
-               interfaces.IMessageStoreWriter)
-
-    # TODO We will want to index by chash when we transition to local-only
-    # UIDs.
-
-    WRITING_FLAG = "_writing"
-    _last_uid_lock = threading.Lock()
-    _fdoc_docid_lock = threading.Lock()
-
-    def __init__(self, permanent_store=None,
-                 write_period=SOLEDAD_WRITE_PERIOD):
-        """
-        Initialize a MemoryStore.
-
-        :param permanent_store: a IMessageStore implementor to dump
-                                messages to.
-        :type permanent_store: IMessageStore
-        :param write_period: the interval to dump messages to disk, in seconds.
-        :type write_period: int
-        """
-        self.reactor = reactor
-
-        self._permanent_store = permanent_store
-        self._write_period = write_period
-
-        if permanent_store is None:
-            self._mbox_closed = defaultdict(lambda: False)
-
-        # Internal Storage: messages
-        """
-        flags document store.
-        _fdoc_store[mbox][uid] = { 'content': 'aaa' }
-        """
-        self._fdoc_store = defaultdict(lambda: defaultdict(
-            lambda: ReferenciableDict({})))
-
-        # Sizes
-        """
-        {'mbox, uid': <int>}
-        """
-        self._sizes = {}
-
-        # Internal Storage: payload-hash
-        """
-        fdocs:doc-id store, stores document IDs for putting
-        the dirty flags-docs.
-        """
-        self._fdoc_id_store = defaultdict(lambda: defaultdict(
-            lambda: ''))
-
-        # Internal Storage: content-hash:hdoc
-        """
-        hdoc-store keeps references to
-        the header-documents indexed by content-hash.
-
-        {'chash': { dict-stuff }
-        }
-        """
-        self._hdoc_store = defaultdict(lambda: ReferenciableDict({}))
-
-        # Internal Storage: payload-hash:cdoc
-        """
-        content-docs stored by payload-hash
-        {'phash': { dict-stuff } }
-        """
-        self._cdoc_store = defaultdict(lambda: ReferenciableDict({}))
-
-        # Internal Storage: content-hash:fdoc
-        """
-        chash-fdoc-store keeps references to
-        the flag-documents indexed by content-hash.
-
-        {'chash': {'mbox-a': weakref.proxy(dict),
-                   'mbox-b': weakref.proxy(dict)}
-        }
-        """
-        self._chash_fdoc_store = defaultdict(lambda: defaultdict(lambda: None))
-
-        # Internal Storage: recent-flags store
-        """
-        recent-flags store keeps one dict per mailbox,
-        with the document-id of the u1db document
-        and the set of the UIDs that have the recent flag.
-
-        {'mbox-a': {'doc_id': 'deadbeef',
-                    'set': {1,2,3,4}
-                    }
-        }
-        """
-        # TODO this will have to transition to content-hash
-        # indexes after we move to local-only UIDs.
-
-        self._rflags_store = defaultdict(
-            lambda: {'doc_id': None, 'set': set([])})
-
-        """
-        last-uid store keeps the count of the highest UID
-        per mailbox.
-
-        {'mbox-a': 42,
-         'mbox-b': 23}
-        """
-        self._last_uid = defaultdict(lambda: 0)
-
-        """
-        known-uids keeps a count of the uids that soledad knows for a given
-        mailbox
-
-        {'mbox-a': set([1,2,3])}
-        """
-        self._known_uids = defaultdict(set)
-
-        """
-        mbox-flags is a dict containing flags for each mailbox. this is
-        modified from mailbox.getFlags / mailbox.setFlags
-        """
-        self._mbox_flags = defaultdict(set)
-
-        # New and dirty flags, to set MessageWrapper State.
-        self._new = set([])
-        self._new_queue = set([])
-        self._new_deferreds = {}
-
-        self._dirty = set([])
-        self._dirty_queue = set([])
-        self._dirty_deferreds = {}
-
-        self._rflags_dirty = set([])
-
-        # Flag for signaling we're busy writing to the disk storage.
-        setattr(self, self.WRITING_FLAG, False)
-
-        if self._permanent_store is not None:
-            # this producer spits its messages to the permanent store
-            # consumer using a queue. We will use that to put
-            # our messages to be written.
-            self.producer = MessageProducer(permanent_store,
-                                            period=0.1)
-            # looping call for dumping to SoledadStore
-            self._write_loop = LoopingCall(self.write_messages,
-                                           permanent_store)
-
-            # We can start the write loop right now, why wait?
-            self._start_write_loop()
-        else:
-            # We have a memory-only store.
-            self.producer = None
-            self._write_loop = None
-
-    def _start_write_loop(self):
-        """
-        Start loop for writing to disk database.
-        """
-        if self._write_loop is None:
-            return
-        if not self._write_loop.running:
-            self._write_loop.start(self._write_period, now=True)
-
-    def _stop_write_loop(self):
-        """
-        Stop loop for writing to disk database.
-        """
-        if self._write_loop is None:
-            return
-        if self._write_loop.running:
-            self._write_loop.stop()
-
-    # IMessageStore
-
-    # XXX this would work well for whole message operations.
-    # We would have to add a put_flags operation to modify only
-    # the flags doc (and set the dirty flag accordingly)
-
-    def create_message(self, mbox, uid, message, observer,
-                       notify_on_disk=True):
-        """
-        Create the passed message into this MemoryStore.
-
-        By default we consider that any message is a new message.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :param uid: the UID for the message
-        :type uid: int
-        :param message: a message to be added
-        :type message: MessageWrapper
-        :param observer: the deferred that will fire with the
-                         UID of the message. If notify_on_disk is True,
-                         this will happen when the message is written to
-                         Soledad. Otherwise it will fire as soon as we've
-                         added the message to the memory store.
-        :type observer: Deferred
-        :param notify_on_disk: whether the `observer` deferred should
-                               wait until the message is written to disk to
-                               be fired.
-        :type notify_on_disk: bool
-        """
-        log.msg("Adding new doc to memstore %r (%r)" % (mbox, uid))
-        key = mbox, uid
-
-        self._add_message(mbox, uid, message, notify_on_disk)
-        self._new.add(key)
-
-        if observer is not None:
-            if notify_on_disk:
-                # We store this deferred so we can keep track of the pending
-                # operations internally.
-                # TODO this should fire with the UID !!! -- change that in
-                # the soledad store code.
-                self._new_deferreds[key] = observer
-
-            else:
-                # Caller does not care, just fired and forgot, so we pass
-                # a defer that will inmediately have its callback triggered.
-                self.reactor.callFromThread(observer.callback, uid)
-
-    def put_message(self, mbox, uid, message, notify_on_disk=True):
-        """
-        Put an existing message.
-
-        This will also set the dirty flag on the MemoryStore.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :param uid: the UID for the message
-        :type uid: int
-        :param message: a message to be added
-        :type message: MessageWrapper
-        :param notify_on_disk: whether the deferred that is returned should
-                               wait until the message is written to disk to
-                               be fired.
-        :type notify_on_disk: bool
-
-        :return: a Deferred. if notify_on_disk is True, will be fired
-                 when written to the db on disk.
-                 Otherwise will fire inmediately
-        :rtype: Deferred
-        """
-        key = mbox, uid
-        d = defer.Deferred()
-        d.addCallback(lambda result: log.msg("message PUT save: %s" % result))
-
-        self._dirty.add(key)
-        self._dirty_deferreds[key] = d
-        self._add_message(mbox, uid, message, notify_on_disk)
-        return d
-
-    def _add_message(self, mbox, uid, message, notify_on_disk=True):
-        """
-        Helper method, called by both create_message and put_message.
-        See those for parameter documentation.
-        """
-        msg_dict = message.as_dict()
-
-        fdoc = msg_dict.get(FDOC, None)
-        if fdoc is not None:
-            fdoc_store = self._fdoc_store[mbox][uid]
-            fdoc_store.update(fdoc)
-            chash_fdoc_store = self._chash_fdoc_store
-
-            # content-hash indexing
-            chash = fdoc.get(fields.CONTENT_HASH_KEY)
-            chash_fdoc_store[chash][mbox] = weakref.proxy(
-                self._fdoc_store[mbox][uid])
-
-        hdoc = msg_dict.get(HDOC, None)
-        if hdoc is not None:
-            chash = hdoc.get(fields.CONTENT_HASH_KEY)
-            hdoc_store = self._hdoc_store[chash]
-            hdoc_store.update(hdoc)
-
-        cdocs = message.cdocs
-        for cdoc in cdocs.values():
-            phash = cdoc.get(fields.PAYLOAD_HASH_KEY, None)
-            if not phash:
-                continue
-            cdoc_store = self._cdoc_store[phash]
-            cdoc_store.update(cdoc)
-
-        # Update memory store size
-        # XXX this should use [mbox][uid]
-        # TODO --- this has to be deferred to thread,
-        # TODO add hdoc and cdocs sizes too
-        # it's slowing things down here.
-        # key = mbox, uid
-        # self._sizes[key] = size.get_size(self._fdoc_store[key])
-
-    def purge_fdoc_store(self, mbox):
-        """
-        Purge the empty documents from a fdoc store.
-        Called during initialization of the SoledadMailbox
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        """
-        # XXX This is really a workaround until I find the conditions
-        # that are making the empty items remain there.
-        # This happens, for instance, after running several times
-        # the regression test, that issues a store deleted + expunge + select
-        # The items are being correclty deleted, but in succesive appends
-        # the empty items with previously deleted uids reappear as empty
-        # documents. I suspect it's a timing condition with a previously
-        # evaluated sequence being used after the items has been removed.
-
-        for uid, value in self._fdoc_store[mbox].items():
-            if empty(value):
-                del self._fdoc_store[mbox][uid]
-
-    def get_docid_for_fdoc(self, mbox, uid):
-        """
-        Return Soledad document id for the flags-doc for a given mbox and uid,
-        or None of no flags document could be found.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :param uid: the message UID
-        :type uid: int
-        :rtype: unicode or None
-        """
-        with self._fdoc_docid_lock:
-            doc_id = self._fdoc_id_store[mbox][uid]
-
-        if empty(doc_id):
-            fdoc = self._permanent_store.get_flags_doc(mbox, uid)
-            if empty(fdoc) or empty(fdoc.content):
-                return None
-            doc_id = fdoc.doc_id
-            self._fdoc_id_store[mbox][uid] = doc_id
-
-        return doc_id
-
-    def get_message(self, mbox, uid, dirtystate=DirtyState.none,
-                    flags_only=False):
-        """
-        Get a MessageWrapper for the given mbox and uid combination.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :param uid: the message UID
-        :type uid: int
-        :param dirtystate: DirtyState enum: one of `dirty`, `new`
-                           or `none` (default)
-        :type dirtystate: enum
-        :param flags_only: whether the message should carry only a reference
-                           to the flags document.
-        :type flags_only: bool
-        :
-
-        :return: MessageWrapper or None
-        """
-        if dirtystate == DirtyState.dirty:
-            flags_only = True
-
-        key = mbox, uid
-
-        fdoc = self._fdoc_store[mbox][uid]
-        if empty(fdoc):
-            return None
-
-        new, dirty = False, False
-        if dirtystate == DirtyState.none:
-            new, dirty = self._get_new_dirty_state(key)
-        if dirtystate == DirtyState.dirty:
-            new, dirty = False, True
-        if dirtystate == DirtyState.new:
-            new, dirty = True, False
-
-        if flags_only:
-            return MessageWrapper(fdoc=fdoc,
-                                  new=new, dirty=dirty,
-                                  memstore=weakref.proxy(self))
-        else:
-            chash = fdoc.get(fields.CONTENT_HASH_KEY)
-            hdoc = self._hdoc_store[chash]
-            if empty(hdoc):
-                hdoc = self._permanent_store.get_headers_doc(chash)
-                if empty(hdoc):
-                    return None
-                if not empty(hdoc.content):
-                    self._hdoc_store[chash] = hdoc.content
-                    hdoc = hdoc.content
-            cdocs = None
-
-            pmap = hdoc.get(fields.PARTS_MAP_KEY, None)
-            if new and pmap is not None:
-                # take the different cdocs for write...
-                cdoc_store = self._cdoc_store
-                cdocs_list = phash_iter(hdoc)
-                cdocs = dict(enumerate(
-                    [cdoc_store[phash] for phash in cdocs_list], 1))
-
-            return MessageWrapper(fdoc=fdoc, hdoc=hdoc, cdocs=cdocs,
-                                  new=new, dirty=dirty,
-                                  memstore=weakref.proxy(self))
-
-    def remove_message(self, mbox, uid):
-        """
-        Remove a Message from this MemoryStore.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :param uid: the message UID
-        :type uid: int
-        """
-        # XXX For the moment we are only removing the flags and headers
-        # docs. The rest we leave there polluting your hard disk,
-        # until we think about a good way of deorphaning.
-
-        # XXX implement elijah's idea of using a PUT document as a
-        # token to ensure consistency in the removal.
-
-        try:
-            del self._fdoc_store[mbox][uid]
-        except KeyError:
-            pass
-
-        try:
-            key = mbox, uid
-            self._new.discard(key)
-            self._dirty.discard(key)
-            if key in self._sizes:
-                del self._sizes[key]
-            self._known_uids[mbox].discard(uid)
-        except KeyError:
-            pass
-        except Exception as exc:
-            logger.error("error while removing message!")
-            logger.exception(exc)
-        try:
-            with self._fdoc_docid_lock:
-                del self._fdoc_id_store[mbox][uid]
-        except KeyError:
-            pass
-        except Exception as exc:
-            logger.error("error while removing message!")
-            logger.exception(exc)
-
-    # IMessageStoreWriter
-
-    @deferred_to_thread
-    def write_messages(self, store):
-        """
-        Write the message documents in this MemoryStore to a different store.
-
-        :param store: the IMessageStore to write to
-        :rtype: False if queue is not empty, None otherwise.
-        """
-        # For now, we pass if the queue is not empty, to avoid duplicate
-        # queuing.
-        # We would better use a flag to know when we've already enqueued an
-        # item.
-
-        # XXX this could return the deferred for all the enqueued operations
-
-        if not self.producer.is_queue_empty():
-            return False
-
-        if any(map(lambda i: not empty(i), (self._new, self._dirty))):
-            logger.info("Writing messages to Soledad...")
-
-        # TODO change for lock, and make the property access
-        # is accquired
-        with set_bool_flag(self, self.WRITING_FLAG):
-            for rflags_doc_wrapper in self.all_rdocs_iter():
-                self.producer.push(rflags_doc_wrapper,
-                                   state=self.producer.STATE_DIRTY)
-            for msg_wrapper in self.all_new_msg_iter():
-                self.producer.push(msg_wrapper,
-                                   state=self.producer.STATE_NEW)
-            for msg_wrapper in self.all_dirty_msg_iter():
-                self.producer.push(msg_wrapper,
-                                   state=self.producer.STATE_DIRTY)
-
-    # MemoryStore specific methods.
-
-    def get_uids(self, mbox):
-        """
-        Get all uids for a given mbox.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :rtype: list
-        """
-        return self._fdoc_store[mbox].keys()
-
-    def get_soledad_known_uids(self, mbox):
-        """
-        Get all uids that soledad knows about, from the memory cache.
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :rtype: list
-        """
-        return self._known_uids.get(mbox, [])
-
-    # last_uid
-
-    def get_last_uid(self, mbox):
-        """
-        Return the highest UID for a given mbox.
-        It will be the highest between the highest uid in the message store for
-        the mailbox, and the soledad integer cache.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :rtype: int
-        """
-        uids = self.get_uids(mbox)
-        last_mem_uid = uids and max(uids) or 0
-        last_soledad_uid = self.get_last_soledad_uid(mbox)
-        return max(last_mem_uid, last_soledad_uid)
-
-    def get_last_soledad_uid(self, mbox):
-        """
-        Get last uid for a given mbox from the soledad integer cache.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        """
-        return self._last_uid.get(mbox, 0)
-
-    def set_last_soledad_uid(self, mbox, value):
-        """
-        Set last uid for a given mbox in the soledad integer cache.
-        SoledadMailbox should prime this value during initialization.
-        Other methods (during message adding) SHOULD call
-        `increment_last_soledad_uid` instead.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :param value: the value to set
-        :type value: int
-        """
-        # can be long???
-        # leap_assert_type(value, int)
-        logger.info("setting last soledad uid for %s to %s" %
-                    (mbox, value))
-        # if we already have a value here, don't do anything
-        with self._last_uid_lock:
-            if not self._last_uid.get(mbox, None):
-                self._last_uid[mbox] = value
-
-    def set_known_uids(self, mbox, value):
-        """
-        Set the value fo the known-uids set for this mbox.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :param value: a sequence of integers to be added to the set.
-        :type value: tuple
-        """
-        current = self._known_uids[mbox]
-        self._known_uids[mbox] = current.union(set(value))
-
-    def increment_last_soledad_uid(self, mbox):
-        """
-        Increment by one the soledad integer cache for the last_uid for
-        this mbox, and fire a defer-to-thread to update the soledad value.
-        The caller should lock the call tho this method.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        """
-        with self._last_uid_lock:
-            self._last_uid[mbox] += 1
-            value = self._last_uid[mbox]
-            self.reactor.callInThread(self.write_last_uid, mbox, value)
-            return value
-
-    def write_last_uid(self, mbox, value):
-        """
-        Increment the soledad integer cache for the highest uid value.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :param value: the value to set
-        :type value: int
-        """
-        leap_assert_type(value, int)
-        if self._permanent_store:
-            self._permanent_store.write_last_uid(mbox, value)
-
-    def load_flag_docs(self, mbox, flag_docs):
-        """
-        Load the flag documents for the given mbox.
-        Used during initial flag docs prefetch.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :param flag_docs: a dict with the content for the flag docs, indexed
-                          by uid.
-        :type flag_docs: dict
-        """
-        # We can do direct assignments cause we know this will only
-        # be called during initialization of the mailbox.
-        # TODO could hook here a sanity-check
-        # for duplicates
-
-        fdoc_store = self._fdoc_store[mbox]
-        chash_fdoc_store = self._chash_fdoc_store
-        for uid in flag_docs:
-            rdict = ReferenciableDict(flag_docs[uid])
-            fdoc_store[uid] = rdict
-            # populate chash dict too, to avoid fdoc duplication
-            chash = flag_docs[uid]["chash"]
-            chash_fdoc_store[chash][mbox] = weakref.proxy(
-                self._fdoc_store[mbox][uid])
-
-    def update_flags(self, mbox, uid, fdoc):
-        """
-        Update the flag document for a given mbox and uid combination,
-        and set the dirty flag.
-        We could use put_message, but this is faster.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :param uid: the uid of the message
-        :type uid: int
-
-        :param fdoc: a dict with the content for the flag docs
-        :type fdoc: dict
-        """
-        key = mbox, uid
-        self._fdoc_store[mbox][uid].update(fdoc)
-        self._dirty.add(key)
-
-    def load_header_docs(self, header_docs):
-        """
-        Load the flag documents for the given mbox.
-        Used during header docs prefetch, and during cache after
-        a read from soledad if the hdoc property in message did not
-        find its value in here.
-
-        :param flag_docs: a dict with the content for the flag docs.
-        :type flag_docs: dict
-        """
-        hdoc_store = self._hdoc_store
-        for chash in header_docs:
-            hdoc_store[chash] = ReferenciableDict(header_docs[chash])
-
-    def all_flags(self, mbox):
-        """
-        Return a dictionary with all the flags for a given mbox.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :rtype: dict
-        """
-        fdict = {}
-        uids = self.get_uids(mbox)
-        fstore = self._fdoc_store[mbox]
-
-        for uid in uids:
-            try:
-                fdict[uid] = fstore[uid][fields.FLAGS_KEY]
-            except KeyError:
-                continue
-        return fdict
-
-    def all_headers(self, mbox):
-        """
-        Return a dictionary with all the header docs for a given mbox.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :rtype: dict
-        """
-        headers_dict = {}
-        uids = self.get_uids(mbox)
-        fdoc_store = self._fdoc_store[mbox]
-        hdoc_store = self._hdoc_store
-
-        for uid in uids:
-            try:
-                chash = fdoc_store[uid][fields.CONTENT_HASH_KEY]
-                hdoc = hdoc_store[chash]
-                if not empty(hdoc):
-                    headers_dict[uid] = hdoc
-            except KeyError:
-                continue
-        return headers_dict
-
-    # Counting sheeps...
-
-    def count_new_mbox(self, mbox):
-        """
-        Count the new messages by mailbox.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :return: number of new messages
-        :rtype: int
-        """
-        return len([(m, uid) for m, uid in self._new if mbox == mbox])
-
-    # XXX used at all?
-    def count_new(self):
-        """
-        Count all the new messages in the MemoryStore.
-
-        :rtype: int
-        """
-        return len(self._new)
-
-    def count(self, mbox):
-        """
-        Return the count of messages for a given mbox.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :return: number of messages
-        :rtype: int
-        """
-        return len(self._fdoc_store[mbox])
-
-    def unseen_iter(self, mbox):
-        """
-        Get an iterator for the message UIDs with no `seen` flag
-        for a given mailbox.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :return: iterator through unseen message doc UIDs
-        :rtype: iterable
-        """
-        fdocs = self._fdoc_store[mbox]
-
-        return [uid for uid, value
-                in fdocs.items()
-                if fields.SEEN_FLAG not in value.get(fields.FLAGS_KEY, [])]
-
-    def get_cdoc_from_phash(self, phash):
-        """
-        Return a content-document by its payload-hash.
-
-        :param phash: the payload hash to check against
-        :type phash: str or unicode
-        :rtype: MessagePartDoc
-        """
-        doc = self._cdoc_store.get(phash, None)
-
-        # XXX return None for consistency?
-
-        # XXX have to keep a mapping between phash and its linkage
-        # info, to know if this payload is been already saved or not.
-        # We will be able to get this from the linkage-docs,
-        # not yet implemented.
-        new = True
-        dirty = False
-        return MessagePartDoc(
-            new=new, dirty=dirty, store="mem",
-            part=MessagePartType.cdoc,
-            content=doc,
-            doc_id=None)
-
-    def get_fdoc_from_chash(self, chash, mbox):
-        """
-        Return a flags-document by its content-hash and a given mailbox.
-        Used during content-duplication detection while copying or adding a
-        message.
-
-        :param chash: the content hash to check against
-        :type chash: str or unicode
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-
-        :return: MessagePartDoc. It will return None if the flags document
-                 has empty content or it is flagged as \\Deleted.
-        """
-        fdoc = self._chash_fdoc_store[chash][mbox]
-
-        # a couple of special cases.
-        # 1. We might have a doc with empty content...
-        if empty(fdoc):
-            return None
-
-        # 2. ...Or the message could exist, but being flagged for deletion.
-        # We want to create a new one in this case.
-        # Hmmm what if the deletion is un-done?? We would end with a
-        # duplicate...
-        if fdoc and fields.DELETED_FLAG in fdoc.get(fields.FLAGS_KEY, []):
-            return None
-
-        uid = fdoc[fields.UID_KEY]
-        key = mbox, uid
-        new = key in self._new
-        dirty = key in self._dirty
-
-        return MessagePartDoc(
-            new=new, dirty=dirty, store="mem",
-            part=MessagePartType.fdoc,
-            content=fdoc,
-            doc_id=None)
-
-    def iter_fdoc_keys(self):
-        """
-        Return a generator through all the mbox, uid keys in the flags-doc
-        store.
-        """
-        fdoc_store = self._fdoc_store
-        for mbox in fdoc_store:
-            for uid in fdoc_store[mbox]:
-                yield mbox, uid
-
-    def all_new_msg_iter(self):
-        """
-        Return generator that iterates through all new messages.
-
-        :return: generator of MessageWrappers
-        :rtype: generator
-        """
-        gm = self.get_message
-        # need to freeze, set can change during iteration
-        new = [gm(*key, dirtystate=DirtyState.new) for key in tuple(self._new)]
-        # move content from new set to the queue
-        self._new_queue.update(self._new)
-        self._new.difference_update(self._new)
-        return new
-
-    def all_dirty_msg_iter(self):
-        """
-        Return generator that iterates through all dirty messages.
-
-        :return: generator of MessageWrappers
-        :rtype: generator
-        """
-        gm = self.get_message
-        # need to freeze, set can change during iteration
-        dirty = [gm(*key, flags_only=True, dirtystate=DirtyState.dirty)
-                 for key in tuple(self._dirty)]
-        # move content from new and dirty sets to the queue
-
-        self._dirty_queue.update(self._dirty)
-        self._dirty.difference_update(self._dirty)
-        return dirty
-
-    def all_deleted_uid_iter(self, mbox):
-        """
-        Return a list with the UIDs for all messags
-        with deleted flag in a given mailbox.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :return: list of integers
-        :rtype: list
-        """
-        # This *needs* to return a fixed sequence. Otherwise the dictionary len
-        # will change during iteration, when we modify it
-        fdocs = self._fdoc_store[mbox]
-        return [uid for uid, value
-                in fdocs.items()
-                if fields.DELETED_FLAG in value.get(fields.FLAGS_KEY, [])]
-
-    # new, dirty flags
-
-    def _get_new_dirty_state(self, key):
-        """
-        Return `new` and `dirty` flags for a given message.
-
-        :param key: the key for the message, in the form mbox, uid
-        :type key: tuple
-        :return: tuple of bools
-        :rtype: tuple
-        """
-        # TODO change indexing of sets to [mbox][key] too.
-        # XXX should return *first* the news, and *then* the dirty...
-
-        # TODO should query in queues too , true?
-        #
-        return map(lambda _set: key in _set, (self._new, self._dirty))
-
-    def set_new_queued(self, key):
-        """
-        Add the key value to the `new-queue` set.
-
-        :param key: the key for the message, in the form mbox, uid
-        :type key: tuple
-        """
-        self._new_queue.add(key)
-
-    def unset_new_queued(self, key):
-        """
-        Remove the key value from the `new-queue` set.
-
-        :param key: the key for the message, in the form mbox, uid
-        :type key: tuple
-        """
-        self._new_queue.discard(key)
-        deferreds = self._new_deferreds
-        d = deferreds.get(key, None)
-        if d:
-            # XXX use a namedtuple for passing the result
-            # when we check it in the other side.
-            d.callback('%s, ok' % str(key))
-            deferreds.pop(key)
-
-    def set_dirty_queued(self, key):
-        """
-        Add the key value to the `dirty-queue` set.
-
-        :param key: the key for the message, in the form mbox, uid
-        :type key: tuple
-        """
-        self._dirty_queue.add(key)
-
-    def unset_dirty_queued(self, key):
-        """
-        Remove the key value from the `dirty-queue` set.
-
-        :param key: the key for the message, in the form mbox, uid
-        :type key: tuple
-        """
-        self._dirty_queue.discard(key)
-        deferreds = self._dirty_deferreds
-        d = deferreds.get(key, None)
-        if d:
-            # XXX use a namedtuple for passing the result
-            # when we check it in the other side.
-            d.callback('%s, ok' % str(key))
-            deferreds.pop(key)
-
-    # Recent Flags
-
-    def set_recent_flag(self, mbox, uid):
-        """
-        Set the `Recent` flag for a given mailbox and UID.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :param uid: the message UID
-        :type uid: int
-        """
-        self._rflags_dirty.add(mbox)
-        self._rflags_store[mbox]['set'].add(uid)
-
-    # TODO --- nice but unused
-    def unset_recent_flag(self, mbox, uid):
-        """
-        Unset the `Recent` flag for a given mailbox and UID.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :param uid: the message UID
-        :type uid: int
-        """
-        self._rflags_store[mbox]['set'].discard(uid)
-
-    def set_recent_flags(self, mbox, value):
-        """
-        Set the value for the set of the recent flags.
-        Used from the property in the MessageCollection.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :param value: a sequence of flags to set
-        :type value: sequence
-        """
-        self._rflags_dirty.add(mbox)
-        self._rflags_store[mbox]['set'] = set(value)
-
-    def load_recent_flags(self, mbox, flags_doc):
-        """
-        Load the passed flags document in the recent flags store, for a given
-        mailbox.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :param flags_doc: A dictionary containing the `doc_id` of the Soledad
-                          flags-document for this mailbox, and the `set`
-                          of uids marked with that flag.
-        """
-        self._rflags_store[mbox] = flags_doc
-
-    def get_recent_flags(self, mbox):
-        """
-        Return the set of UIDs with the `Recent` flag for this mailbox.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :rtype: set, or None
-        """
-        rflag_for_mbox = self._rflags_store.get(mbox, None)
-        if not rflag_for_mbox:
-            return None
-        return self._rflags_store[mbox]['set']
-
-    def all_rdocs_iter(self):
-        """
-        Return an iterator through all in-memory recent flag dicts, wrapped
-        under a RecentFlagsDoc namedtuple.
-        Used for saving to disk.
-
-        :return: a generator of RecentFlagDoc
-        :rtype: generator
-        """
-        # XXX use enums
-        DOC_ID = "doc_id"
-        SET = "set"
-
-        rflags_store = self._rflags_store
-
-        def get_rdoc(mbox, rdict):
-            mbox_rflag_set = rdict[SET]
-            recent_set = copy(mbox_rflag_set)
-            # zero it!
-            mbox_rflag_set.difference_update(mbox_rflag_set)
-            return RecentFlagsDoc(
-                doc_id=rflags_store[mbox][DOC_ID],
-                content={
-                    fields.TYPE_KEY: fields.TYPE_RECENT_VAL,
-                    fields.MBOX_KEY: mbox,
-                    fields.RECENTFLAGS_KEY: list(recent_set)
-                })
-
-        return (get_rdoc(mbox, rdict) for mbox, rdict in rflags_store.items()
-                if not empty(rdict[SET]))
-
-    # Methods that mirror the IMailbox interface
-
-    def remove_all_deleted(self, mbox):
-        """
-        Remove all messages flagged \\Deleted from this Memory Store only.
-        Called from `expunge`
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :return: a list of UIDs
-        :rtype: list
-        """
-        mem_deleted = self.all_deleted_uid_iter(mbox)
-        for uid in mem_deleted:
-            self.remove_message(mbox, uid)
-        return mem_deleted
-
-    def stop_and_flush(self):
-        """
-        Stop the write loop and trigger a write to the producer.
-        """
-        self._stop_write_loop()
-        if self._permanent_store is not None:
-            # XXX we should check if we did get a True value on this
-            # operation. If we got False we should retry! (queue was not empty)
-            self.write_messages(self._permanent_store)
-            self.producer.flush()
-
-    def expunge(self, mbox, observer):
-        """
-        Remove all messages flagged \\Deleted, from the Memory Store
-        and from the permanent store also.
-
-        It first queues up a last write, and wait for the deferreds to be done
-        before continuing.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :param observer: a deferred that will be fired when expunge is done
-        :type observer: Deferred
-        """
-        soledad_store = self._permanent_store
-        if soledad_store is None:
-            # just-in memory store, easy then.
-            self._delete_from_memory(mbox, observer)
-            return
-
-        # We have a soledad storage.
-        try:
-            # Stop and trigger last write
-            self.stop_and_flush()
-            # Wait on the writebacks to finish
-
-            # XXX what if pending deferreds is empty?
-            pending_deferreds = (self._new_deferreds.get(mbox, []) +
-                                 self._dirty_deferreds.get(mbox, []))
-            d1 = defer.gatherResults(pending_deferreds, consumeErrors=True)
-            d1.addCallback(
-                self._delete_from_soledad_and_memory, mbox, observer)
-        except Exception as exc:
-            logger.exception(exc)
-
-    def _delete_from_memory(self, mbox, observer):
-        """
-        Remove all messages marked as deleted from soledad and memory.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :param observer: a deferred that will be fired when expunge is done
-        :type observer: Deferred
-        """
-        mem_deleted = self.remove_all_deleted(mbox)
-        observer.callback(mem_deleted)
-
-    def _delete_from_soledad_and_memory(self, result, mbox, observer):
-        """
-        Remove all messages marked as deleted from soledad and memory.
-
-        :param result: ignored. the result of the deferredList that triggers
-                       this as a callback from `expunge`.
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :param observer: a deferred that will be fired when expunge is done
-        :type observer: Deferred
-        """
-        all_deleted = []
-        soledad_store = self._permanent_store
-
-        try:
-            # 1. Delete all messages marked as deleted in soledad.
-            logger.debug("DELETING FROM SOLEDAD ALL FOR %r" % (mbox,))
-            sol_deleted = soledad_store.remove_all_deleted(mbox)
-
-            try:
-                self._known_uids[mbox].difference_update(set(sol_deleted))
-            except Exception as exc:
-                logger.exception(exc)
-
-            # 2. Delete all messages marked as deleted in memory.
-            logger.debug("DELETING FROM MEM ALL FOR %r" % (mbox,))
-            mem_deleted = self.remove_all_deleted(mbox)
-
-            all_deleted = set(mem_deleted).union(set(sol_deleted))
-            logger.debug("deleted %r" % all_deleted)
-        except Exception as exc:
-            logger.exception(exc)
-        finally:
-            self._start_write_loop()
-
-        observer.callback(all_deleted)
-
-    # Mailbox documents and attributes
-
-    # This could be also be cached in memstore, but proxying directly
-    # to soledad since it's not too performance-critical.
-
-    def get_mbox_doc(self, mbox):
-        """
-        Return the soledad document for a given mailbox.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :rtype: SoledadDocument or None.
-        """
-        if self.permanent_store is not None:
-            return self.permanent_store.get_mbox_document(mbox)
-        else:
-            return None
-
-    def get_mbox_closed(self, mbox):
-        """
-        Return the closed attribute for a given mailbox.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :rtype: bool
-        """
-        if self.permanent_store is not None:
-            return self.permanent_store.get_mbox_closed(mbox)
-        else:
-            return self._mbox_closed[mbox]
-
-    def set_mbox_closed(self, mbox, closed):
-        """
-        Set the closed attribute for a given mailbox.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        """
-        if self.permanent_store is not None:
-            self.permanent_store.set_mbox_closed(mbox, closed)
-        else:
-            self._mbox_closed[mbox] = closed
-
-    def get_mbox_flags(self, mbox):
-        """
-        Get the flags for a given mbox.
-        :rtype: list
-        """
-        return sorted(self._mbox_flags[mbox])
-
-    def set_mbox_flags(self, mbox, flags):
-        """
-        Set the mbox flags
-        """
-        self._mbox_flags[mbox] = set(flags)
-        # TODO
-        # This should write to the permanent store!!!
-
-    # Rename flag-documents
-
-    def rename_fdocs_mailbox(self, old_mbox, new_mbox):
-        """
-        Change the mailbox name for all flag documents in a given mailbox.
-        Used from account.rename
-
-        :param old_mbox: name for the old mbox
-        :type old_mbox: str or unicode
-        :param new_mbox: name for the new mbox
-        :type new_mbox: str or unicode
-        """
-        fs = self._fdoc_store
-        keys = fs[old_mbox].keys()
-        for k in keys:
-            fdoc = fs[old_mbox][k]
-            fdoc['mbox'] = new_mbox
-            fs[new_mbox][k] = fdoc
-            fs[old_mbox].pop(k)
-            self._dirty.add((new_mbox, k))
-
-    # Dump-to-disk controls.
-
-    @property
-    def is_writing(self):
-        """
-        Property that returns whether the store is currently writing its
-        internal state to a permanent storage.
-
-        Used to evaluate whether the CHECK command can inform that the field
-        is clear to proceed, or waiting for the write operations to complete
-        is needed instead.
-
-        :rtype: bool
-        """
-        # FIXME this should return a deferred !!!
-        # XXX ----- can fire when all new + dirty deferreds
-        # are done (gatherResults)
-        return getattr(self, self.WRITING_FLAG)
-
-    @property
-    def permanent_store(self):
-        return self._permanent_store
-
-    # Memory management.
-
-    def get_size(self):
-        """
-        Return the size of the internal storage.
-        Use for calculating the limit beyond which we should flush the store.
-
-        :rtype: int
-        """
-        return reduce(lambda x, y: x + y, self._sizes, 0)
diff --git a/src/leap/mail/imap/messageparts.py b/src/leap/mail/imap/messageparts.py
deleted file mode 100644
index fb1d75a..0000000
--- a/src/leap/mail/imap/messageparts.py
+++ /dev/null
@@ -1,586 +0,0 @@
-# messageparts.py
-# Copyright (C) 2014 LEAP
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-"""
-MessagePart implementation. Used from LeapMessage.
-"""
-import logging
-import StringIO
-import weakref
-
-from collections import namedtuple
-
-from enum import Enum
-from zope.interface import implements
-from twisted.mail import imap4
-
-from leap.common.decorators import memoized_method
-from leap.common.mail import get_email_charset
-from leap.mail.imap import interfaces
-from leap.mail.imap.fields import fields
-from leap.mail.utils import empty, first, find_charset
-
-MessagePartType = Enum("MessagePartType", "hdoc fdoc cdoc cdocs docs_id")
-
-
-logger = logging.getLogger(__name__)
-
-
-"""
-A MessagePartDoc is a light wrapper around the dictionary-like
-data that we pass along for message parts. It can be used almost everywhere
-that you would expect a SoledadDocument, since it has a dict under the
-`content` attribute.
-
-We also keep some metadata on it, relative in part to the message as a whole,
-and sometimes to a part in particular only.
-
-* `new` indicates that the document has just been created. SoledadStore
-  should just create a new doc for all the related message parts.
-* `store` indicates the type of store a given MessagePartDoc lives in.
-  We currently use this to indicate that  the document comes from memeory,
-  but we should probably get rid of it as soon as we extend the use of the
-  SoledadStore interface along LeapMessage, MessageCollection and Mailbox.
-* `part` is one of the MessagePartType enums.
-
-* `dirty` indicates that, while we already have the document in Soledad,
-  we have modified its state in memory, so we need to put_doc instead while
-  dumping the MemoryStore contents.
-  `dirty` attribute would only apply to flags-docs and linkage-docs.
-* `doc_id` is the identifier for the document in the u1db database, if any.
-
-"""
-
-MessagePartDoc = namedtuple(
-    'MessagePartDoc',
-    ['new', 'dirty', 'part', 'store', 'content', 'doc_id'])
-
-"""
-A RecentFlagsDoc is used to send the recent-flags document payload to the
-SoledadWriter during dumps.
-"""
-RecentFlagsDoc = namedtuple(
-    'RecentFlagsDoc',
-    ['content', 'doc_id'])
-
-
-class ReferenciableDict(dict):
-    """
-    A dict that can be weak-referenced.
-
-    Some builtin objects are not weak-referenciable unless
-    subclassed. So we do.
-
-    Used to return pointers to the items in the MemoryStore.
-    """
-
-
-class MessageWrapper(object):
-    """
-    A simple nested dictionary container around the different message subparts.
-    """
-    implements(interfaces.IMessageContainer)
-
-    FDOC = "fdoc"
-    HDOC = "hdoc"
-    CDOCS = "cdocs"
-    DOCS_ID = "docs_id"
-
-    # Using slots to limit some the memory use,
-    # Add your attribute here.
-
-    __slots__ = ["_dict", "_new", "_dirty", "_storetype", "memstore"]
-
-    def __init__(self, fdoc=None, hdoc=None, cdocs=None,
-                 from_dict=None, memstore=None,
-                 new=True, dirty=False, docs_id={}):
-        """
-        Initialize a MessageWrapper.
-        """
-        # TODO add optional reference to original message in the incoming
-        self._dict = {}
-        self.memstore = memstore
-
-        self._new = new
-        self._dirty = dirty
-
-        self._storetype = "mem"
-
-        if from_dict is not None:
-            self.from_dict(from_dict)
-        else:
-            if fdoc is not None:
-                self._dict[self.FDOC] = ReferenciableDict(fdoc)
-            if hdoc is not None:
-                self._dict[self.HDOC] = ReferenciableDict(hdoc)
-            if cdocs is not None:
-                self._dict[self.CDOCS] = ReferenciableDict(cdocs)
-
-        # This will keep references to the doc_ids to be able to put
-        # messages to soledad. It will be populated during the walk() to avoid
-        # the overhead of reading from the db.
-
-        # XXX it really *only* make sense for the FDOC, the other parts
-        # should not be "dirty", just new...!!!
-        self._dict[self.DOCS_ID] = docs_id
-
-    # properties
-
-    # TODO Could refactor new and dirty properties together.
-
-    def _get_new(self):
-        """
-        Get the value for the `new` flag.
-
-        :rtype: bool
-        """
-        return self._new
-
-    def _set_new(self, value=False):
-        """
-        Set the value for the `new` flag, and propagate it
-        to the memory store if any.
-
-        :param value: the value to set
-        :type value: bool
-        """
-        self._new = value
-        if self.memstore:
-            mbox = self.fdoc.content.get('mbox', None)
-            uid = self.fdoc.content.get('uid', None)
-            if not mbox or not uid:
-                logger.warning("Malformed fdoc")
-                return
-            key = mbox, uid
-            fun = [self.memstore.unset_new_queued,
-                   self.memstore.set_new_queued][int(value)]
-            fun(key)
-        else:
-            logger.warning("Could not find a memstore referenced from this "
-                           "MessageWrapper. The value for new will not be "
-                           "propagated")
-
-    new = property(_get_new, _set_new,
-                   doc="The `new` flag for this MessageWrapper")
-
-    def _get_dirty(self):
-        """
-        Get the value for the `dirty` flag.
-
-        :rtype: bool
-        """
-        return self._dirty
-
-    def _set_dirty(self, value=True):
-        """
-        Set the value for the `dirty` flag, and propagate it
-        to the memory store if any.
-
-        :param value: the value to set
-        :type value: bool
-        """
-        self._dirty = value
-        if self.memstore:
-            mbox = self.fdoc.content.get('mbox', None)
-            uid = self.fdoc.content.get('uid', None)
-            if not mbox or not uid:
-                logger.warning("Malformed fdoc")
-                return
-            key = mbox, uid
-            fun = [self.memstore.unset_dirty_queued,
-                   self.memstore.set_dirty_queued][int(value)]
-            fun(key)
-        else:
-            logger.warning("Could not find a memstore referenced from this "
-                           "MessageWrapper. The value for new will not be "
-                           "propagated")
-
-    dirty = property(_get_dirty, _set_dirty)
-
-    # IMessageContainer
-
-    @property
-    def fdoc(self):
-        """
-        Return a MessagePartDoc wrapping around a weak reference to
-        the flags-document in this MemoryStore, if any.
-
-        :rtype: MessagePartDoc
-        """
-        _fdoc = self._dict.get(self.FDOC, None)
-        if _fdoc:
-            content_ref = weakref.proxy(_fdoc)
-        else:
-            logger.warning("NO FDOC!!!")
-            content_ref = {}
-
-        return MessagePartDoc(new=self.new, dirty=self.dirty,
-                              store=self._storetype,
-                              part=MessagePartType.fdoc,
-                              content=content_ref,
-                              doc_id=self._dict[self.DOCS_ID].get(
-                                  self.FDOC, None))
-
-    @property
-    def hdoc(self):
-        """
-        Return a MessagePartDoc wrapping around a weak reference to
-        the headers-document in this MemoryStore, if any.
-
-        :rtype: MessagePartDoc
-        """
-        _hdoc = self._dict.get(self.HDOC, None)
-        if _hdoc:
-            content_ref = weakref.proxy(_hdoc)
-        else:
-            content_ref = {}
-        return MessagePartDoc(new=self.new, dirty=self.dirty,
-                              store=self._storetype,
-                              part=MessagePartType.hdoc,
-                              content=content_ref,
-                              doc_id=self._dict[self.DOCS_ID].get(
-                                  self.HDOC, None))
-
-    @property
-    def cdocs(self):
-        """
-        Return a weak reference to a zero-indexed dict containing
-        the content-documents, or an empty dict if none found.
-        If you want access to the MessagePartDoc for the individual
-        parts, use the generator returned by `walk` instead.
-
-        :rtype: dict
-        """
-        _cdocs = self._dict.get(self.CDOCS, None)
-        if _cdocs:
-            return weakref.proxy(_cdocs)
-        else:
-            return {}
-
-    def walk(self):
-        """
-        Generator that iterates through all the parts, returning
-        MessagePartDoc. Used for writing to SoledadStore.
-
-        :rtype: generator
-        """
-        if self._dirty:
-            try:
-                mbox = self.fdoc.content[fields.MBOX_KEY]
-                uid = self.fdoc.content[fields.UID_KEY]
-                docid_dict = self._dict[self.DOCS_ID]
-                docid_dict[self.FDOC] = self.memstore.get_docid_for_fdoc(
-                    mbox, uid)
-            except Exception as exc:
-                logger.debug("Error while walking message...")
-                logger.exception(exc)
-
-        if not empty(self.fdoc.content) and 'uid' in self.fdoc.content:
-            yield self.fdoc
-        if not empty(self.hdoc.content):
-            yield self.hdoc
-        for cdoc in self.cdocs.values():
-            if not empty(cdoc):
-                content_ref = weakref.proxy(cdoc)
-                yield MessagePartDoc(new=self.new, dirty=self.dirty,
-                                     store=self._storetype,
-                                     part=MessagePartType.cdoc,
-                                     content=content_ref,
-                                     doc_id=None)
-
-    # i/o
-
-    def as_dict(self):
-        """
-        Return a dict representation of the parts contained.
-
-        :rtype: dict
-        """
-        return self._dict
-
-    def from_dict(self, msg_dict):
-        """
-        Populate MessageWrapper parts from a dictionary.
-        It expects the same format that we use in a
-        MessageWrapper.
-
-
-        :param msg_dict: a dictionary containing the parts to populate
-                         the MessageWrapper from
-        :type msg_dict: dict
-        """
-        fdoc, hdoc, cdocs = map(
-            lambda part: msg_dict.get(part, None),
-            [self.FDOC, self.HDOC, self.CDOCS])
-
-        for t, doc in ((self.FDOC, fdoc), (self.HDOC, hdoc),
-                       (self.CDOCS, cdocs)):
-            self._dict[t] = ReferenciableDict(doc) if doc else None
-
-
-class MessagePart(object):
-    """
-    IMessagePart implementor, to be passed to several methods
-    of the IMAP4Server.
-    It takes a subpart message and is able to find
-    the inner parts.
-
-    See the interface documentation.
-    """
-
-    implements(imap4.IMessagePart)
-
-    def __init__(self, soledad, part_map):
-        """
-        Initializes the MessagePart.
-
-        :param soledad: Soledad instance.
-        :type soledad: Soledad
-        :param part_map: a dictionary containing the parts map for this
-                         message
-        :type part_map: dict
-        """
-        # TODO
-        # It would be good to pass the uid/mailbox also
-        # for references while debugging.
-
-        # We have a problem on bulk moves, and is
-        # that when the fetch on the new mailbox is done
-        # the parts maybe are not complete.
-        # So we should be able to fail with empty
-        # docs until we solve that. The ideal would be
-        # to gather the results of the deferred operations
-        # to signal the operation is complete.
-        #leap_assert(part_map, "part map dict cannot be null")
-
-        self._soledad = soledad
-        self._pmap = part_map
-
-    def getSize(self):
-        """
-        Return the total size, in octets, of this message part.
-
-        :return: size of the message, in octets
-        :rtype: int
-        """
-        if empty(self._pmap):
-            return 0
-        size = self._pmap.get('size', None)
-        if size is None:
-            logger.error("Message part cannot find size in the partmap")
-            size = 0
-        return size
-
-    def getBodyFile(self):
-        """
-        Retrieve a file object containing only the body of this message.
-
-        :return: file-like object opened for reading
-        :rtype: StringIO
-        """
-        fd = StringIO.StringIO()
-        if not empty(self._pmap):
-            multi = self._pmap.get('multi')
-            if not multi:
-                phash = self._pmap.get("phash", None)
-            else:
-                pmap = self._pmap.get('part_map')
-                first_part = pmap.get('1', None)
-                if not empty(first_part):
-                    phash = first_part['phash']
-                else:
-                    phash = None
-
-            if phash is None:
-                logger.warning("Could not find phash for this subpart!")
-                payload = ""
-            else:
-                payload = self._get_payload_from_document_memoized(phash)
-                if empty(payload):
-                    payload = self._get_payload_from_document(phash)
-
-        else:
-            logger.warning("Message with no part_map!")
-            payload = ""
-
-        if payload:
-            content_type = self._get_ctype_from_document(phash)
-            charset = find_charset(content_type)
-            if charset is None:
-                charset = self._get_charset(payload)
-            try:
-                if isinstance(payload, unicode):
-                    payload = payload.encode(charset)
-            except UnicodeError as exc:
-                logger.error(
-                    "Unicode error, using 'replace'. {0!r}".format(exc))
-                payload = payload.encode(charset, 'replace')
-
-        fd.write(payload)
-        fd.seek(0)
-        return fd
-
-    # TODO should memory-bound this memoize!!!
-    @memoized_method
-    def _get_payload_from_document_memoized(self, phash):
-        """
-        Memoized method call around the regular method, to be able
-        to call the non-memoized method in case we got a None.
-
-        :param phash: the payload hash to retrieve by.
-        :type phash: str or unicode
-        :rtype: str or unicode or None
-        """
-        return self._get_payload_from_document(phash)
-
-    def _get_payload_from_document(self, phash):
-        """
-        Return the message payload from the content document.
-
-        :param phash: the payload hash to retrieve by.
-        :type phash: str or unicode
-        :rtype: str or unicode or None
-        """
-        cdocs = self._soledad.get_from_index(
-            fields.TYPE_P_HASH_IDX,
-            fields.TYPE_CONTENT_VAL, str(phash))
-
-        cdoc = first(cdocs)
-        if cdoc is None:
-            logger.warning(
-                "Could not find the content doc "
-                "for phash %s" % (phash,))
-            payload = ""
-        else:
-            payload = cdoc.content.get(fields.RAW_KEY, "")
-        return payload
-
-    # TODO should memory-bound this memoize!!!
-    @memoized_method
-    def _get_ctype_from_document(self, phash):
-        """
-        Reeturn the content-type from the content document.
-
-        :param phash: the payload hash to retrieve by.
-        :type phash: str or unicode
-        :rtype: str or unicode
-        """
-        cdocs = self._soledad.get_from_index(
-            fields.TYPE_P_HASH_IDX,
-            fields.TYPE_CONTENT_VAL, str(phash))
-
-        cdoc = first(cdocs)
-        if not cdoc:
-            logger.warning(
-                "Could not find the content doc "
-                "for phash %s" % (phash,))
-        ctype = cdoc.content.get('ctype', "")
-        return ctype
-
-    @memoized_method
-    def _get_charset(self, stuff):
-        # TODO put in a common class with LeapMessage
-        """
-        Gets (guesses?) the charset of a payload.
-
-        :param stuff: the stuff to guess about.
-        :type stuff: str or unicode
-        :return: charset
-        :rtype: unicode
-        """
-        # XXX existential doubt 2. shouldn't we make the scope
-        # of the decorator somewhat more persistent?
-        # ah! yes! and put memory bounds.
-        return get_email_charset(stuff)
-
-    def getHeaders(self, negate, *names):
-        """
-        Retrieve a group of message headers.
-
-        :param names: The names of the headers to retrieve or omit.
-        :type names: tuple of str
-
-        :param negate: If True, indicates that the headers listed in names
-                       should be omitted from the return value, rather
-                       than included.
-        :type negate: bool
-
-        :return: A mapping of header field names to header field values
-        :rtype: dict
-        """
-        # XXX refactor together with MessagePart method
-        if not self._pmap:
-            logger.warning("No pmap in Subpart!")
-            return {}
-        headers = dict(self._pmap.get("headers", []))
-
-        names = map(lambda s: s.upper(), names)
-        if negate:
-            cond = lambda key: key.upper() not in names
-        else:
-            cond = lambda key: key.upper() in names
-
-        # default to most likely standard
-        charset = find_charset(headers, "utf-8")
-        headers2 = dict()
-        for key, value in headers.items():
-            # twisted imap server expects *some* headers to be lowercase
-            # We could use a CaseInsensitiveDict here...
-            if key.lower() == "content-type":
-                key = key.lower()
-
-            if not isinstance(key, str):
-                key = key.encode(charset, 'replace')
-            if not isinstance(value, str):
-                value = value.encode(charset, 'replace')
-
-            # filter original dict by negate-condition
-            if cond(key):
-                headers2[key] = value
-        return headers2
-
-    def isMultipart(self):
-        """
-        Return True if this message is multipart.
-        """
-        if empty(self._pmap):
-            logger.warning("Could not get part map!")
-            return False
-        multi = self._pmap.get("multi", False)
-        return multi
-
-    def getSubPart(self, part):
-        """
-        Retrieve a MIME submessage
-
-        :type part: C{int}
-        :param part: The number of the part to retrieve, indexed from 0.
-        :raise IndexError: Raised if the specified part does not exist.
-        :raise TypeError: Raised if this message is not multipart.
-        :rtype: Any object implementing C{IMessagePart}.
-        :return: The specified sub-part.
-        """
-        if not self.isMultipart():
-            raise TypeError
-
-        sub_pmap = self._pmap.get("part_map", {})
-        try:
-            part_map = sub_pmap[str(part + 1)]
-        except KeyError:
-            logger.debug("getSubpart for %s: KeyError" % (part,))
-            raise IndexError
-
-        # XXX check for validity
-        return MessagePart(self._soledad, part_map)
diff --git a/src/leap/mail/imap/messages.py b/src/leap/mail/imap/messages.py
index 0356600..d1c7b93 100644
--- a/src/leap/mail/imap/messages.py
+++ b/src/leap/mail/imap/messages.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
-# messages.py
-# Copyright (C) 2013 LEAP
+# imap/messages.py
+# Copyright (C) 2013-2015 LEAP
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -15,189 +15,62 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
-LeapMessage and MessageCollection.
+IMAPMessage implementation.
 """
-import copy
 import logging
-import re
-import threading
-import StringIO
-
-from collections import defaultdict
-from email import message_from_string
-from functools import partial
-
-from pycryptopp.hash import sha256
 from twisted.mail import imap4
 from twisted.internet import defer
 from zope.interface import implements
-from zope.proxy import sameProxiedObjects
-
-from leap.common.check import leap_assert, leap_assert_type
-from leap.common.decorators import memoized_method
-from leap.common.mail import get_email_charset
-from leap.mail import walk
-from leap.mail.utils import first, find_charset, lowerdict, empty
-from leap.mail.utils import stringify_parts_map
-from leap.mail.decorators import deferred_to_thread
-from leap.mail.imap.index import IndexedDB
-from leap.mail.imap.fields import fields, WithMsgFields
-from leap.mail.imap.memorystore import MessageWrapper
-from leap.mail.imap.messageparts import MessagePart, MessagePartDoc
-from leap.mail.imap.parser import MBoxParser
-
-logger = logging.getLogger(__name__)
-
-# TODO ------------------------------------------------------------
-
-# [ ] Add ref to incoming message during add_msg
-# [ ] Add linked-from info.
-#     * Need a new type of documents: linkage info.
-#     * HDOCS are linked from FDOCs (ref to chash)
-#     * CDOCS are linked from HDOCS (ref to chash)
-
-# [ ] Delete incoming mail only after successful write!
-# [ ] Remove UID from syncable db. Store only those indexes locally.
-
-MSGID_PATTERN = r"""<([\w@.]+)>"""
-MSGID_RE = re.compile(MSGID_PATTERN)
-
 
-def try_unique_query(curried):
-    """
-    Try to execute a query that is expected to have a
-    single outcome, and log a warning if more than one document found.
+from leap.mail.utils import find_charset, CaseInsensitiveDict
 
-    :param curried: a curried function
-    :type curried: callable
-    """
-    leap_assert(callable(curried), "A callable is expected")
-    try:
-        query = curried()
-        if query:
-            if len(query) > 1:
-                # TODO we could take action, like trigger a background
-                # process to kill dupes.
-                name = getattr(curried, 'expected', 'doc')
-                logger.warning(
-                    "More than one %s found for this mbox, "
-                    "we got a duplicate!!" % (name,))
-            return query.pop()
-        else:
-            return None
-    except Exception as exc:
-        logger.exception("Unhandled error %r" % exc)
 
+logger = logging.getLogger(__name__)
 
-"""
-A dictionary that keeps one lock per mbox and uid.
-"""
-# XXX too much overhead?
-fdoc_locks = defaultdict(lambda: defaultdict(lambda: threading.Lock()))
+# TODO
+# [ ] Add ref to incoming message during add_msg.
 
 
-class LeapMessage(fields, MBoxParser):
+class IMAPMessage(object):
     """
-    The main representation of a message.
-
-    It indexes the messages in one mailbox by a combination
-    of uid+mailbox name.
+    The main representation of a message as seen by the IMAP Server.
+    This class implements the semantics specific to IMAP specification.
     """
-
-    # TODO this has to change.
-    # Should index primarily by chash, and keep a local-only
-    # UID table.
-
     implements(imap4.IMessage)
 
-    def __init__(self, soledad, uid, mbox, collection=None, container=None):
-        """
-        Initializes a LeapMessage.
-
-        :param soledad: a Soledad instance
-        :type soledad: Soledad
-        :param uid: the UID for the message.
-        :type uid: int or basestring
-        :param mbox: the mbox this message belongs to
-        :type mbox: str or unicode
-        :param collection: a reference to the parent collection object
-        :type collection: MessageCollection
-        :param container: a IMessageContainer implementor instance
-        :type container: IMessageContainer
+    def __init__(self, message, prefetch_body=True,
+                 store=None, d=defer.Deferred()):
         """
-        self._soledad = soledad
-        self._uid = int(uid) if uid is not None else None
-        self._mbox = self._parse_mailbox_name(mbox)
-        self._collection = collection
-        self._container = container
+        Get an IMAPMessage. A mail.Message is needed, since many of the methods
+        are proxied to that object.
 
-        self.__chash = None
-        self.__bdoc = None
 
-        from twisted.internet import reactor
-        self.reactor = reactor
+        If you do not need to prefetch the body of the message, you can set
+        `prefetch_body` to False, but the current imap server implementation
+        expect the getBodyFile method to return inmediately.
 
-    # XXX make these properties public
+        When the prefetch_body option is used, a deferred is also expected as a
+        parameter, and this will fire when the deferred initialization has
+        taken place, with this instance of IMAPMessage as a parameter.
 
-    @property
-    def fdoc(self):
+        :param message: the abstract message
+        :type message: mail.Message
+        :param prefetch_body: Whether to prefetch the content doc for the body.
+        :type prefetch_body: bool
+        :param store: an instance of soledad, or anything that behaves like it.
+        :param d: an optional deferred, that will be fired with the instance of
+                  the IMAPMessage being initialized
+        :type d: defer.Deferred
         """
-        An accessor to the flags document.
-        """
-        if all(map(bool, (self._uid, self._mbox))):
-            fdoc = None
-            if self._container is not None:
-                fdoc = self._container.fdoc
-            if not fdoc:
-                fdoc = self._get_flags_doc()
-            if fdoc:
-                fdoc_content = fdoc.content
-                self.__chash = fdoc_content.get(
-                    fields.CONTENT_HASH_KEY, None)
-            return fdoc
-
-    @property
-    def hdoc(self):
-        """
-        An accessor to the headers document.
-        """
-        container = self._container
-        if container is not None:
-            hdoc = self._container.hdoc
-            if hdoc and not empty(hdoc.content):
-                return hdoc
-        hdoc = self._get_headers_doc()
-
-        if container and not empty(hdoc.content):
-            # mem-cache it
-            hdoc_content = hdoc.content
-            chash = hdoc_content.get(fields.CONTENT_HASH_KEY)
-            hdocs = {chash: hdoc_content}
-            container.memstore.load_header_docs(hdocs)
-        return hdoc
+        # TODO substitute the use of the deferred initialization by a factory
+        # function, maybe.
 
-    @property
-    def chash(self):
-        """
-        An accessor to the content hash for this message.
-        """
-        if not self.fdoc:
-            return None
-        if not self.__chash and self.fdoc:
-            self.__chash = self.fdoc.content.get(
-                fields.CONTENT_HASH_KEY, None)
-        return self.__chash
-
-    @property
-    def bdoc(self):
-        """
-        An accessor to the body document.
-        """
-        if not self.hdoc:
-            return None
-        if not self.__bdoc:
-            self.__bdoc = self._get_body_doc()
-        return self.__bdoc
+        self.message = message
+        self.__body_fd = None
+        self.store = store
+        if prefetch_body:
+            gotbody = self.__prefetch_body_file()
+            gotbody.addCallback(lambda _: d.callback(self))
 
     # IMessage implementation
 
@@ -208,7 +81,7 @@ class LeapMessage(fields, MBoxParser):
         :return: uid for this message
         :rtype: int
         """
-        return self._uid
+        return self.message.get_uid()
 
     def getFlags(self):
         """
@@ -217,62 +90,7 @@ class LeapMessage(fields, MBoxParser):
         :return: The flags, represented as strings
         :rtype: tuple
         """
-        uid = self._uid
-
-        flags = set([])
-        fdoc = self.fdoc
-        if fdoc:
-            flags = set(fdoc.content.get(self.FLAGS_KEY, None))
-
-        msgcol = self._collection
-
-        # We treat the recent flag specially: gotten from
-        # a mailbox-level document.
-        if msgcol and uid in msgcol.recent_flags:
-            flags.add(fields.RECENT_FLAG)
-        if flags:
-            flags = map(str, flags)
-        return tuple(flags)
-
-    # setFlags not in the interface spec but we use it with store command.
-
-    def setFlags(self, flags, mode):
-        """
-        Sets the flags for this message
-
-        :param flags: the flags to update in the message.
-        :type flags: tuple of str
-        :param mode: the mode for setting. 1 is append, -1 is remove, 0 set.
-        :type mode: int
-        """
-        leap_assert(isinstance(flags, tuple), "flags need to be a tuple")
-        mbox, uid = self._mbox, self._uid
-
-        APPEND = 1
-        REMOVE = -1
-        SET = 0
-
-        with fdoc_locks[mbox][uid]:
-            doc = self.fdoc
-            if not doc:
-                logger.warning(
-                    "Could not find FDOC for %r:%s while setting flags!" %
-                    (mbox, uid))
-                return
-            current = doc.content[self.FLAGS_KEY]
-            if mode == APPEND:
-                newflags = tuple(set(tuple(current) + flags))
-            elif mode == REMOVE:
-                newflags = tuple(set(current).difference(set(flags)))
-            elif mode == SET:
-                newflags = flags
-            new_fdoc = {
-                self.FLAGS_KEY: newflags,
-                self.SEEN_KEY: self.SEEN_FLAG in newflags,
-                self.DEL_KEY: self.DELETED_FLAG in newflags}
-            self._collection.memstore.update_flags(mbox, uid, new_fdoc)
-
-        return map(str, newflags)
+        return self.message.get_flags()
 
     def getInternalDate(self):
         """
@@ -289,72 +107,27 @@ class LeapMessage(fields, MBoxParser):
         :return: An RFC822-formatted date string.
         :rtype: str
         """
-        date = self.hdoc.content.get(fields.DATE_KEY, '')
-        return date
+        return self.message.get_internal_date()
 
     #
     # IMessagePart
     #
 
-    # XXX we should implement this interface too for the subparts
-    # so we allow nested parts...
-
-    def getBodyFile(self):
+    def getBodyFile(self, store=None):
         """
         Retrieve a file object containing only the body of this message.
 
         :return: file-like object opened for reading
-        :rtype: StringIO
+        :rtype: a deferred that will fire with a StringIO object.
         """
-        def write_fd(body):
-            fd.write(body)
+        if self.__body_fd is not None:
+            fd = self.__body_fd
             fd.seek(0)
             return fd
 
-        # TODO refactor with getBodyFile in MessagePart
-
-        fd = StringIO.StringIO()
-
-        if self.bdoc is not None:
-            bdoc_content = self.bdoc.content
-            if empty(bdoc_content):
-                logger.warning("No BDOC content found for message!!!")
-                return write_fd("")
-
-            body = bdoc_content.get(self.RAW_KEY, "")
-            content_type = bdoc_content.get('content-type', "")
-            charset = find_charset(content_type)
-            if charset is None:
-                charset = self._get_charset(body)
-            try:
-                if isinstance(body, unicode):
-                    body = body.encode(charset)
-            except UnicodeError as exc:
-                logger.error(
-                    "Unicode error, using 'replace'. {0!r}".format(exc))
-                logger.debug("Attempted to encode with: %s" % charset)
-                body = body.encode(charset, 'replace')
-            finally:
-                return write_fd(body)
-
-        # We are still returning funky characters from here.
-        else:
-            logger.warning("No BDOC found for message.")
-            return write_fd("")
-
-    @memoized_method
-    def _get_charset(self, stuff):
-        """
-        Gets (guesses?) the charset of a payload.
-
-        :param stuff: the stuff to guess about.
-        :type stuff: basestring
-        :returns: charset
-        """
-        # XXX shouldn't we make the scope
-        # of the decorator somewhat more persistent?
-        # ah! yes! and put memory bounds.
-        return get_email_charset(stuff)
+        if store is None:
+            store = self.store
+        return self.message.get_body_file(store)
 
     def getSize(self):
         """
@@ -363,17 +136,7 @@ class LeapMessage(fields, MBoxParser):
         :return: size of the message, in octets
         :rtype: int
         """
-        size = None
-        if self.fdoc is not None:
-            fdoc_content = self.fdoc.content
-            size = fdoc_content.get(self.SIZE_KEY, False)
-        else:
-            logger.warning("No FLAGS doc for %s:%s" % (self._mbox,
-                                                       self._uid))
-        if not size:
-            # XXX fallback, should remove when all migrated.
-            size = self.getBodyFile().len
-        return size
+        return self.message.get_size()
 
     def getHeaders(self, negate, *names):
         """
@@ -390,74 +153,14 @@ class LeapMessage(fields, MBoxParser):
         :return: A mapping of header field names to header field values
         :rtype: dict
         """
-        # TODO split in smaller methods
-        # XXX refactor together with MessagePart method
-
-        headers = self._get_headers()
-        if not headers:
-            logger.warning("No headers found")
-            return {str('content-type'): str('')}
-
-        names = map(lambda s: s.upper(), names)
-        if negate:
-            cond = lambda key: key.upper() not in names
-        else:
-            cond = lambda key: key.upper() in names
-
-        if isinstance(headers, list):
-            headers = dict(headers)
-
-        # default to most likely standard
-        charset = find_charset(headers, "utf-8")
-        headers2 = dict()
-        for key, value in headers.items():
-            # twisted imap server expects *some* headers to be lowercase
-            # We could use a CaseInsensitiveDict here...
-            if key.lower() == "content-type":
-                key = key.lower()
-
-            if not isinstance(key, str):
-                key = key.encode(charset, 'replace')
-            if not isinstance(value, str):
-                value = value.encode(charset, 'replace')
-
-            if value.endswith(";"):
-                # bastards
-                value = value[:-1]
-
-            # filter original dict by negate-condition
-            if cond(key):
-                headers2[key] = value
-        return headers2
-
-    def _get_headers(self):
-        """
-        Return the headers dict for this message.
-        """
-        if self.hdoc is not None:
-            hdoc_content = self.hdoc.content
-            headers = hdoc_content.get(self.HEADERS_KEY, {})
-            return headers
-
-        else:
-            logger.warning(
-                "No HEADERS doc for msg %s:%s" % (
-                    self._mbox,
-                    self._uid))
+        headers = self.message.get_headers()
+        return _format_headers(headers, negate, *names)
 
     def isMultipart(self):
         """
         Return True if this message is multipart.
         """
-        if self.fdoc:
-            fdoc_content = self.fdoc.content
-            is_multipart = fdoc_content.get(self.MULTIPART_KEY, False)
-            return is_multipart
-        else:
-            logger.warning(
-                "No FLAGS doc for msg %s:%s" % (
-                    self._mbox,
-                    self._uid))
+        return self.message.is_multipart()
 
     def getSubPart(self, part):
         """
@@ -470,913 +173,82 @@ class LeapMessage(fields, MBoxParser):
         :rtype: Any object implementing C{IMessagePart}.
         :return: The specified sub-part.
         """
-        if not self.isMultipart():
-            raise TypeError
-        try:
-            pmap_dict = self._get_part_from_parts_map(part + 1)
-        except KeyError:
-            raise IndexError
-        return MessagePart(self._soledad, pmap_dict)
-
-    #
-    # accessors
-    #
-
-    def _get_part_from_parts_map(self, part):
-        """
-        Get a part map from the headers doc
-
-        :raises: KeyError if key does not exist
-        :rtype: dict
-        """
-        if not self.hdoc:
-            logger.warning("Tried to get part but no HDOC found!")
-            return None
-
-        hdoc_content = self.hdoc.content
-        pmap = hdoc_content.get(fields.PARTS_MAP_KEY, {})
-
-        # remember, lads, soledad is using strings in its keys,
-        # not integers!
-        return pmap[str(part)]
-
-    # XXX moved to memory store
-    # move the rest too. ------------------------------------------
-    def _get_flags_doc(self):
-        """
-        Return the document that keeps the flags for this
-        message.
-        """
-        result = {}
-        try:
-            flag_docs = self._soledad.get_from_index(
-                fields.TYPE_MBOX_UID_IDX,
-                fields.TYPE_FLAGS_VAL, self._mbox, str(self._uid))
-            result = first(flag_docs)
-        except Exception as exc:
-            # ugh! Something's broken down there!
-            logger.warning("ERROR while getting flags for UID: %s" % self._uid)
-            logger.exception(exc)
-        finally:
-            return result
-
-    # TODO move to soledadstore instead of accessing soledad directly
-    def _get_headers_doc(self):
-        """
-        Return the document that keeps the headers for this
-        message.
-        """
-        head_docs = self._soledad.get_from_index(
-            fields.TYPE_C_HASH_IDX,
-            fields.TYPE_HEADERS_VAL, str(self.chash))
-        return first(head_docs)
-
-    # TODO move to soledadstore instead of accessing soledad directly
-    def _get_body_doc(self):
-        """
-        Return the document that keeps the body for this
-        message.
-        """
-        hdoc_content = self.hdoc.content
-        body_phash = hdoc_content.get(
-            fields.BODY_KEY, None)
-        if not body_phash:
-            logger.warning("No body phash for this document!")
-            return None
-
-        # XXX get from memstore too...
-        # if memstore: memstore.get_phrash
-        # memstore should keep a dict with weakrefs to the
-        # phash doc...
-
-        if self._container is not None:
-            bdoc = self._container.memstore.get_cdoc_from_phash(body_phash)
-            if not empty(bdoc) and not empty(bdoc.content):
-                return bdoc
-
-        # no memstore, or no body doc found there
-        if self._soledad:
-            body_docs = self._soledad.get_from_index(
-                fields.TYPE_P_HASH_IDX,
-                fields.TYPE_CONTENT_VAL, str(body_phash))
-            return first(body_docs)
-        else:
-            logger.error("No phash in container, and no soledad found!")
-
-    def __getitem__(self, key):
-        """
-        Return an item from the content of the flags document,
-        for convenience.
-
-        :param key: The key
-        :type key: str
-
-        :return: The content value indexed by C{key} or None
-        :rtype: str
-        """
-        return self.fdoc.content.get(key, None)
-
-    def does_exist(self):
-        """
-        Return True if there is actually a flags document for this
-        UID and mbox.
-        """
-        return not empty(self.fdoc)
-
-
-class MessageCollection(WithMsgFields, IndexedDB, MBoxParser):
-    """
-    A collection of messages, surprisingly.
-
-    It is tied to a selected mailbox name that is passed to its constructor.
-    Implements a filter query over the messages contained in a soledad
-    database.
-    """
-
-    # XXX this should be able to produce a MessageSet methinks
-    # could validate these kinds of objects turning them
-    # into a template for the class.
-    FLAGS_DOC = "FLAGS"
-    HEADERS_DOC = "HEADERS"
-    CONTENT_DOC = "CONTENT"
-    """
-    RECENT_DOC is a document that stores a list of the UIDs
-    with the recent flag for this mailbox. It deserves a special treatment
-    because:
-    (1) it cannot be set by the user
-    (2) it's a flag that we set inmediately after a fetch, which is quite
-        often.
-    (3) we need to be able to set/unset it in batches without doing a single
-        write for each element in the sequence.
-    """
-    RECENT_DOC = "RECENT"
-    """
-    HDOCS_SET_DOC is a document that stores a set of the Document-IDs
-    (the u1db index) for all the headers documents for a given mailbox.
-    We use it to prefetch massively all the headers for a mailbox.
-    This is the second massive query, after fetching all the FLAGS,  that
-    a MUA will do in a case where we do not have local disk cache.
-    """
-    HDOCS_SET_DOC = "HDOCS_SET"
-
-    templates = {
-
-        # Message Level
-
-        FLAGS_DOC: {
-            fields.TYPE_KEY: fields.TYPE_FLAGS_VAL,
-            fields.UID_KEY: 1,  # XXX moe to a local table
-            fields.MBOX_KEY: fields.INBOX_VAL,
-            fields.CONTENT_HASH_KEY: "",
-
-            fields.SEEN_KEY: False,
-            fields.DEL_KEY: False,
-            fields.FLAGS_KEY: [],
-            fields.MULTIPART_KEY: False,
-            fields.SIZE_KEY: 0
-        },
-
-        HEADERS_DOC: {
-            fields.TYPE_KEY: fields.TYPE_HEADERS_VAL,
-            fields.CONTENT_HASH_KEY: "",
-
-            fields.DATE_KEY: "",
-            fields.SUBJECT_KEY: "",
-
-            fields.HEADERS_KEY: {},
-            fields.PARTS_MAP_KEY: {},
-        },
-
-        CONTENT_DOC: {
-            fields.TYPE_KEY: fields.TYPE_CONTENT_VAL,
-            fields.PAYLOAD_HASH_KEY: "",
-            fields.LINKED_FROM_KEY: [],
-            fields.CTYPE_KEY: "",  # should index by this too
-
-            # should only get inmutable headers parts
-            # (for indexing)
-            fields.HEADERS_KEY: {},
-            fields.RAW_KEY: "",
-            fields.PARTS_MAP_KEY: {},
-            fields.HEADERS_KEY: {},
-            fields.MULTIPART_KEY: False,
-        },
-
-        # Mailbox Level
-
-        RECENT_DOC: {
-            fields.TYPE_KEY: fields.TYPE_RECENT_VAL,
-            fields.MBOX_KEY: fields.INBOX_VAL,
-            fields.RECENTFLAGS_KEY: [],
-        },
-
-        HDOCS_SET_DOC: {
-            fields.TYPE_KEY: fields.TYPE_HDOCS_SET_VAL,
-            fields.MBOX_KEY: fields.INBOX_VAL,
-            fields.HDOCS_SET_KEY: [],
-        }
-
-
-    }
-
-    # Different locks for wrapping both the u1db document getting/setting
-    # and the property getting/settting in an atomic operation.
-
-    # TODO we would abstract this to a SoledadProperty class
-
-    _rdoc_lock = defaultdict(lambda: threading.Lock())
-    _rdoc_write_lock = defaultdict(lambda: threading.Lock())
-    _rdoc_read_lock = defaultdict(lambda: threading.Lock())
-    _rdoc_property_lock = defaultdict(lambda: threading.Lock())
-
-    _initialized = {}
-
-    def __init__(self, mbox=None, soledad=None, memstore=None):
-        """
-        Constructor for MessageCollection.
-
-        On initialization, we ensure that we have a document for
-        storing the recent flags. The nature of this flag make us wanting
-        to store the set of the UIDs with this flag at the level of the
-        MessageCollection for each mailbox, instead of treating them
-        as a property of each message.
-
-        We are passed an instance of MemoryStore, the same for the
-        SoledadBackedAccount, that we use as a read cache and a buffer
-        for writes.
-
-        :param mbox: the name of the mailbox. It is the name
-                     with which we filter the query over the
-                     messages database.
-        :type mbox: str
-        :param soledad: Soledad database
-        :type soledad: Soledad instance
-        :param memstore: a MemoryStore instance
-        :type memstore: MemoryStore
-        """
-        leap_assert(mbox, "Need a mailbox name to initialize")
-        leap_assert(mbox.strip() != "", "mbox cannot be blank space")
-        leap_assert(isinstance(mbox, (str, unicode)),
-                    "mbox needs to be a string")
-        leap_assert(soledad, "Need a soledad instance to initialize")
-
-        # okay, all in order, keep going...
-
-        self.mbox = self._parse_mailbox_name(mbox)
-
-        # XXX get a SoledadStore passed instead
-        self._soledad = soledad
-        self.memstore = memstore
-
-        self.__rflags = None
-
-        if not self._initialized.get(mbox, False):
-            try:
-                self.initialize_db()
-                # ensure that we have a recent-flags doc
-                self._get_or_create_rdoc()
-            except Exception:
-                logger.debug("Error initializing %r" % (mbox,))
-            else:
-                self._initialized[mbox] = True
-
-        from twisted.internet import reactor
-        self.reactor = reactor
-
-    def _get_empty_doc(self, _type=FLAGS_DOC):
-        """
-        Returns an empty doc for storing different message parts.
-        Defaults to returning a template for a flags document.
-        :return: a dict with the template
-        :rtype: dict
-        """
-        if _type not in self.templates.keys():
-            raise TypeError("Improper type passed to _get_empty_doc")
-        return copy.deepcopy(self.templates[_type])
-
-    def _get_or_create_rdoc(self):
-        """
-        Try to retrieve the recent-flags doc for this MessageCollection,
-        and create one if not found.
-        """
-        # XXX should move this to memstore too
-        with self._rdoc_write_lock[self.mbox]:
-            rdoc = self._get_recent_doc_from_soledad()
-            if rdoc is None:
-                rdoc = self._get_empty_doc(self.RECENT_DOC)
-                if self.mbox != fields.INBOX_VAL:
-                    rdoc[fields.MBOX_KEY] = self.mbox
-                self._soledad.create_doc(rdoc)
-
-    @deferred_to_thread
-    def _do_parse(self, raw):
-        """
-        Parse raw message and return it along with
-        relevant information about its outer level.
-
-        This is done in a separate thread, and the callback is passed
-        to `_do_add_msg` method.
-
-        :param raw: the raw message
-        :type raw: StringIO or basestring
-        :return: msg, parts, chash, size, multi
-        :rtype: tuple
-        """
-        msg = message_from_string(raw)
-        parts = walk.get_parts(msg)
-        size = len(raw)
-        chash = sha256.SHA256(raw).hexdigest()
-        multi = msg.is_multipart()
-        return msg, parts, chash, size, multi
-
-    def _populate_flags(self, flags, uid, chash, size, multi):
-        """
-        Return a flags doc.
-
-        XXX Missing DOC -----------
-        """
-        fd = self._get_empty_doc(self.FLAGS_DOC)
-
-        fd[self.MBOX_KEY] = self.mbox
-        fd[self.UID_KEY] = uid
-        fd[self.CONTENT_HASH_KEY] = chash
-        fd[self.SIZE_KEY] = size
-        fd[self.MULTIPART_KEY] = multi
-        if flags:
-            fd[self.FLAGS_KEY] = flags
-            fd[self.SEEN_KEY] = self.SEEN_FLAG in flags
-            fd[self.DEL_KEY] = self.DELETED_FLAG in flags
-            fd[self.RECENT_KEY] = True  # set always by default
-        return fd
-
-    def _populate_headr(self, msg, chash, subject, date):
-        """
-        Return a headers doc.
-
-        XXX Missing DOC -----------
-        """
-        headers = defaultdict(list)
-        for k, v in msg.items():
-            headers[k].append(v)
-
-        # "fix" for repeated headers.
-        for k, v in headers.items():
-            newline = "\n%s: " % (k,)
-            headers[k] = newline.join(v)
+        subpart = self.message.get_subpart(part + 1)
+        return IMAPMessagePart(subpart)
 
-        lower_headers = lowerdict(headers)
-        msgid = first(MSGID_RE.findall(
-            lower_headers.get('message-id', '')))
-
-        hd = self._get_empty_doc(self.HEADERS_DOC)
-        hd[self.CONTENT_HASH_KEY] = chash
-        hd[self.HEADERS_KEY] = headers
-        hd[self.MSGID_KEY] = msgid
-
-        if not subject and self.SUBJECT_FIELD in headers:
-            hd[self.SUBJECT_KEY] = headers[self.SUBJECT_FIELD]
-        else:
-            hd[self.SUBJECT_KEY] = subject
-
-        if not date and self.DATE_FIELD in headers:
-            hd[self.DATE_KEY] = headers[self.DATE_FIELD]
-        else:
-            hd[self.DATE_KEY] = date
-        return hd
-
-    def _fdoc_already_exists(self, chash):
-        """
-        Check whether we can find a flags doc for this mailbox with the
-        given content-hash. It enforces that we can only have the same maessage
-        listed once for a a given mailbox.
-
-        :param chash: the content-hash to check about.
-        :type chash: basestring
-        :return: False, if it does not exist, or UID.
-        """
-        exist = False
-        exist = self.memstore.get_fdoc_from_chash(chash, self.mbox)
-
-        if not exist:
-            exist = self._get_fdoc_from_chash(chash)
-        if exist and exist.content is not None:
-            return exist.content.get(fields.UID_KEY, "unknown-uid")
-        else:
-            return False
-
-    def add_msg(self, raw, subject=None, flags=None, date=None,
-                notify_on_disk=False):
-        """
-        Creates a new message document.
-
-        :param raw: the raw message
-        :type raw: str
-
-        :param subject: subject of the message.
-        :type subject: str
-
-        :param flags: flags
-        :type flags: list
-
-        :param date: the received date for the message
-        :type date: str
-
-        :return: a deferred that will be fired with the message
-                 uid when the adding succeed.
-        :rtype: deferred
-        """
-        if flags is None:
-            flags = tuple()
-        leap_assert_type(flags, tuple)
-
-        observer = defer.Deferred()
-        d = self._do_parse(raw)
-        d.addCallback(lambda result: self.reactor.callInThread(
-            self._do_add_msg, result, flags, subject, date,
-            notify_on_disk, observer))
-        return observer
-
-    # Called in thread
-    def _do_add_msg(self, parse_result, flags, subject,
-                    date, notify_on_disk, observer):
-        """
-        Helper that creates a new message document.
-        Here lives the magic of the leap mail. Well, in soledad, really.
-
-        See `add_msg` docstring for parameter info.
-
-        :param parse_result: a tuple with the results of `self._do_parse`
-        :type parse_result: tuple
-        :param observer: a deferred that will be fired with the message
-                         uid when the adding succeed.
-        :type observer: deferred
-        """
-        # TODO signal that we can delete the original message!-----
-        # when all the processing is done.
-
-        # TODO add the linked-from info !
-        # TODO add reference to the original message
-
-        msg, parts, chash, size, multi = parse_result
-
-        # check for uniqueness --------------------------------
-        # Watch out! We're reserving a UID right after this!
-        existing_uid = self._fdoc_already_exists(chash)
-        if existing_uid:
-            msg = self.get_msg_by_uid(existing_uid)
-
-            # We can say the observer that we're done
-            self.reactor.callFromThread(observer.callback, existing_uid)
-            msg.setFlags((fields.DELETED_FLAG,), -1)
-            return
-
-        # XXX get FUCKING UID from autoincremental table
-        uid = self.memstore.increment_last_soledad_uid(self.mbox)
-
-        # We can say the observer that we're done at this point, but
-        # before that we should make sure it has no serious consequences
-        # if we're issued, for instance, a fetch command right after...
-        # self.reactor.callFromThread(observer.callback, uid)
-        # if we did the notify, we need to invalidate the deferred
-        # so not to try to fire it twice.
-        # observer = None
-
-        fd = self._populate_flags(flags, uid, chash, size, multi)
-        hd = self._populate_headr(msg, chash, subject, date)
-
-        body_phash_fun = [walk.get_body_phash_simple,
-                          walk.get_body_phash_multi][int(multi)]
-        body_phash = body_phash_fun(walk.get_payloads(msg))
-        parts_map = walk.walk_msg_tree(parts, body_phash=body_phash)
-
-        # add parts map to header doc
-        # (body, multi, part_map)
-        for key in parts_map:
-            hd[key] = parts_map[key]
-        del parts_map
-
-        hd = stringify_parts_map(hd)
-
-        # The MessageContainer expects a dict, one-indexed
-        cdocs = dict(enumerate(walk.get_raw_docs(msg, parts), 1))
-
-        self.set_recent_flag(uid)
-        msg_container = MessageWrapper(fd, hd, cdocs)
-        self.memstore.create_message(
-            self.mbox, uid, msg_container,
-            observer=observer, notify_on_disk=notify_on_disk)
-
-    #
-    # getters: specific queries
-    #
-
-    # recent flags
-
-    def _get_recent_flags(self):
-        """
-        An accessor for the recent-flags set for this mailbox.
-        """
-        # XXX check if we should remove this
-        if self.__rflags is not None:
-            return self.__rflags
-
-        if self.memstore is not None:
-            with self._rdoc_lock[self.mbox]:
-                rflags = self.memstore.get_recent_flags(self.mbox)
-                if not rflags:
-                    # not loaded in the memory store yet.
-                    # let's fetch them from soledad...
-                    rdoc = self._get_recent_doc_from_soledad()
-                    if rdoc is None:
-                        return set([])
-                    rflags = set(rdoc.content.get(
-                        fields.RECENTFLAGS_KEY, []))
-                    # ...and cache them now.
-                    self.memstore.load_recent_flags(
-                        self.mbox,
-                        {'doc_id': rdoc.doc_id, 'set': rflags})
-            return rflags
-
-    def _set_recent_flags(self, value):
-        """
-        Setter for the recent-flags set for this mailbox.
-        """
-        if self.memstore is not None:
-            self.memstore.set_recent_flags(self.mbox, value)
-
-    recent_flags = property(
-        _get_recent_flags, _set_recent_flags,
-        doc="Set of UIDs with the recent flag for this mailbox.")
-
-    def _get_recent_doc_from_soledad(self):
-        """
-        Get recent-flags document from Soledad for this mailbox.
-        :rtype: SoledadDocument or None
-        """
-        curried = partial(
-            self._soledad.get_from_index,
-            fields.TYPE_MBOX_IDX,
-            fields.TYPE_RECENT_VAL, self.mbox)
-        curried.expected = "rdoc"
-        with self._rdoc_read_lock[self.mbox]:
-            return try_unique_query(curried)
-
-    # Property-set modification (protected by a different
-    # lock to give atomicity to the read/write operation)
-
-    def unset_recent_flags(self, uids):
-        """
-        Unset Recent flag for a sequence of uids.
-
-        :param uids: the uids to unset
-        :type uid: sequence
-        """
-        with self._rdoc_property_lock[self.mbox]:
-            self.recent_flags.difference_update(
-                set(uids))
-
-    # Individual flags operations
-
-    def unset_recent_flag(self, uid):
-        """
-        Unset Recent flag for a given uid.
-
-        :param uid: the uid to unset
-        :type uid: int
-        """
-        with self._rdoc_property_lock[self.mbox]:
-            self.recent_flags.difference_update(
-                set([uid]))
-
-    @deferred_to_thread
-    def set_recent_flag(self, uid):
-        """
-        Set Recent flag for a given uid.
-
-        :param uid: the uid to set
-        :type uid: int
-        """
-        with self._rdoc_property_lock[self.mbox]:
-            self.recent_flags = self.recent_flags.union(
-                set([uid]))
-
-    # individual doc getters, message layer.
-
-    def _get_fdoc_from_chash(self, chash):
-        """
-        Return a flags document for this mailbox with a given chash.
-
-        :return: A SoledadDocument containing the Flags Document, or None if
-                 the query failed.
-        :rtype: SoledadDocument or None.
-        """
-        curried = partial(
-            self._soledad.get_from_index,
-            fields.TYPE_MBOX_C_HASH_IDX,
-            fields.TYPE_FLAGS_VAL, self.mbox, chash)
-        curried.expected = "fdoc"
-        fdoc = try_unique_query(curried)
-        if fdoc is not None:
-            return fdoc
-        else:
-            # probably this should be the other way round,
-            # ie, try fist on memstore...
-            cf = self.memstore._chash_fdoc_store
-            fdoc = cf[chash][self.mbox]
-            # hey, I just needed to wrap fdoc thing into
-            # a "content" attribute, look a better way...
-            if not empty(fdoc):
-                return MessagePartDoc(
-                    new=None, dirty=None, part=None,
-                    store=None, doc_id=None,
-                    content=fdoc)
-
-    def _get_uid_from_msgidCb(self, msgid):
-        hdoc = None
-        curried = partial(
-            self._soledad.get_from_index,
-            fields.TYPE_MSGID_IDX,
-            fields.TYPE_HEADERS_VAL, msgid)
-        curried.expected = "hdoc"
-        hdoc = try_unique_query(curried)
-
-        # XXX this is only a quick hack to avoid regression
-        # on the "multiple copies of the draft" issue, but
-        # this is currently broken since  it's not efficient to
-        # look for this. Should lookup better.
-        # FIXME!
-
-        if hdoc is not None:
-            hdoc_dict = hdoc.content
-
-        else:
-            hdocstore = self.memstore._hdoc_store
-            match = [x for _, x in hdocstore.items() if x['msgid'] == msgid]
-            hdoc_dict = first(match)
-
-        if hdoc_dict is None:
-            logger.warning("Could not find hdoc for msgid %s"
-                           % (msgid,))
-            return None
-        msg_chash = hdoc_dict.get(fields.CONTENT_HASH_KEY)
-
-        fdoc = self._get_fdoc_from_chash(msg_chash)
-        if not fdoc:
-            logger.warning("Could not find fdoc for msgid %s"
-                           % (msgid,))
-            return None
-        return fdoc.content.get(fields.UID_KEY, None)
-
-    @deferred_to_thread
-    def _get_uid_from_msgid(self, msgid):
-        """
-        Return a UID for a given message-id.
-
-        It first gets the headers-doc for that msg-id, and
-        it found it queries the flags doc for the current mailbox
-        for the matching content-hash.
-
-        :return: A UID, or None
-        """
-        # We need to wait a little bit, cause in some of the cases
-        # the query is received right after we've saved the document,
-        # and we cannot find it otherwise. This seems to be enough.
-
-        # XXX do a deferLater instead ??
-        # XXX is this working?
-        return self._get_uid_from_msgidCb(msgid)
-
-    @deferred_to_thread
-    def set_flags(self, mbox, messages, flags, mode, observer):
-        """
-        Set flags for a sequence of messages.
-
-        :param mbox: the mbox this message belongs to
-        :type mbox: str or unicode
-        :param messages: the messages to iterate through
-        :type messages: sequence
-        :flags: the flags to be set
-        :type flags: tuple
-        :param mode: the mode for setting. 1 is append, -1 is remove, 0 set.
-        :type mode: int
-        :param observer: a deferred that will be called with the dictionary
-                         mapping UIDs to flags after the operation has been
-                         done.
-        :type observer: deferred
-        """
-        reactor = self.reactor
-        getmsg = self.get_msg_by_uid
-
-        def set_flags(uid, flags, mode):
-            msg = getmsg(uid, mem_only=True, flags_only=True)
-            if msg is not None:
-                return uid, msg.setFlags(flags, mode)
-
-        setted_flags = [set_flags(uid, flags, mode) for uid in messages]
-        result = dict(filter(None, setted_flags))
-
-        reactor.callFromThread(observer.callback, result)
-
-    # getters: generic for a mailbox
-
-    def get_msg_by_uid(self, uid, mem_only=False, flags_only=False):
-        """
-        Retrieves a LeapMessage by UID.
-        This is used primarity in the Mailbox fetch and store methods.
-
-        :param uid: the message uid to query by
-        :type uid: int
-        :param mem_only: a flag that indicates whether this Message should
-                         pass a reference to soledad to retrieve missing pieces
-                         or not.
-        :type mem_only: bool
-        :param flags_only: whether the message should carry only a reference
-                           to the flags document.
-        :type flags_only: bool
-
-        :return: A LeapMessage instance matching the query,
-                 or None if not found.
-        :rtype: LeapMessage
-        """
-        msg_container = self.memstore.get_message(
-            self.mbox, uid, flags_only=flags_only)
-
-        if msg_container is not None:
-            if mem_only:
-                msg = LeapMessage(None, uid, self.mbox, collection=self,
-                                  container=msg_container)
-            else:
-                # We pass a reference to soledad just to be able to retrieve
-                # missing parts that cannot be found in the container, like
-                # the content docs after a copy.
-                msg = LeapMessage(self._soledad, uid, self.mbox,
-                                  collection=self, container=msg_container)
-        else:
-            msg = LeapMessage(self._soledad, uid, self.mbox, collection=self)
-
-        if not msg.does_exist():
-            return None
-        return msg
-
-    def get_all_docs(self, _type=fields.TYPE_FLAGS_VAL):
-        """
-        Get all documents for the selected mailbox of the
-        passed type. By default, it returns the flag docs.
-
-        If you want acess to the content, use __iter__ instead
-
-        :return: a list of u1db documents
-        :rtype: list of SoledadDocument
-        """
-        if _type not in fields.__dict__.values():
-            raise TypeError("Wrong type passed to get_all_docs")
-
-        if sameProxiedObjects(self._soledad, None):
-            logger.warning('Tried to get messages but soledad is None!')
-            return []
-
-        all_docs = [doc for doc in self._soledad.get_from_index(
-            fields.TYPE_MBOX_IDX,
-            _type, self.mbox)]
-
-        # inneficient, but first let's grok it and then
-        # let's worry about efficiency.
-        # XXX FIXINDEX -- should implement order by in soledad
-        # FIXME ----------------------------------------------
-        return sorted(all_docs, key=lambda item: item.content['uid'])
-
-    def all_soledad_uid_iter(self):
-        """
-        Return an iterator through the UIDs of all messages, sorted in
-        ascending order.
-        """
-        db_uids = set([doc.content[self.UID_KEY] for doc in
-                       self._soledad.get_from_index(
-                           fields.TYPE_MBOX_IDX,
-                           fields.TYPE_FLAGS_VAL, self.mbox)
-                       if not empty(doc)])
-        return db_uids
-
-    def all_uid_iter(self):
-        """
-        Return an iterator through the UIDs of all messages, from memory.
-        """
-        mem_uids = self.memstore.get_uids(self.mbox)
-        soledad_known_uids = self.memstore.get_soledad_known_uids(
-            self.mbox)
-        combined = tuple(set(mem_uids).union(soledad_known_uids))
-        return combined
-
-    def get_all_soledad_flag_docs(self):
-        """
-        Return a dict with the content of all the flag documents
-        in soledad store for the given mbox.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :rtype: dict
-        """
-        # XXX we really could return a reduced version with
-        # just {'uid': (flags-tuple,) since the prefetch is
-        # only oriented to get the flag tuples.
-        all_docs = [(
-            doc.content[self.UID_KEY],
-            dict(doc.content))
-            for doc in
-            self._soledad.get_from_index(
-                fields.TYPE_MBOX_IDX,
-                fields.TYPE_FLAGS_VAL, self.mbox)
-            if not empty(doc.content)]
-        all_flags = dict(all_docs)
-        return all_flags
-
-    def all_headers(self):
-        """
-        Return a dict with all the header documents for this
-        mailbox.
-
-        :rtype: dict
-        """
-        return self.memstore.all_headers(self.mbox)
-
-    def count(self):
-        """
-        Return the count of messages for this mailbox.
-
-        :rtype: int
-        """
-        return self.memstore.count(self.mbox)
-
-    # unseen messages
-
-    def unseen_iter(self):
-        """
-        Get an iterator for the message UIDs with no `seen` flag
-        for this mailbox.
-
-        :return: iterator through unseen message doc UIDs
-        :rtype: iterable
-        """
-        return self.memstore.unseen_iter(self.mbox)
-
-    def count_unseen(self):
-        """
-        Count all messages with the `Unseen` flag.
-
-        :returns: count
-        :rtype: int
-        """
-        return len(list(self.unseen_iter()))
-
-    def get_unseen(self):
-        """
-        Get all messages with the `Unseen` flag
-
-        :returns: a list of LeapMessages
-        :rtype: list
-        """
-        return [LeapMessage(self._soledad, docid, self.mbox, collection=self)
-                for docid in self.unseen_iter()]
+    def __prefetch_body_file(self):
+        def assign_body_fd(fd):
+            self.__body_fd = fd
+            return fd
+        d = self.getBodyFile()
+        d.addCallback(assign_body_fd)
+        return d
 
-    # recent messages
 
-    # XXX take it from memstore
-    def count_recent(self):
-        """
-        Count all messages with the `Recent` flag.
-        It just retrieves the length of the recent_flags set,
-        which is stored in a specific type of document for
-        this collection.
+class IMAPMessagePart(object):
 
-        :returns: count
-        :rtype: int
-        """
-        return len(self.recent_flags)
+    def __init__(self, message_part):
+        self.message_part = message_part
 
-    def __len__(self):
-        """
-        Returns the number of messages on this mailbox.
+    def getBodyFile(self, store=None):
+        return self.message_part.get_body_file()
 
-        :rtype: int
-        """
-        return self.count()
-
-    def __iter__(self):
-        """
-        Returns an iterator over all messages.
+    def getSize(self):
+        return self.message_part.get_size()
 
-        :returns: iterator of dicts with content for all messages.
-        :rtype: iterable
-        """
-        return (LeapMessage(self._soledad, docuid, self.mbox, collection=self)
-                for docuid in self.all_uid_iter())
+    def getHeaders(self, negate, *names):
+        headers = self.message_part.get_headers()
+        return _format_headers(headers, negate, *names)
 
-    def __repr__(self):
-        """
-        Representation string for this object.
-        """
-        return u"<MessageCollection: mbox '%s' (%s)>" % (
-            self.mbox, self.count())
+    def isMultipart(self):
+        return self.message_part.is_multipart()
 
-    # XXX should implement __eq__ also !!!
-    # use chash...
+    def getSubPart(self, part):
+        subpart = self.message_part.get_subpart(part + 1)
+        return IMAPMessagePart(subpart)
+
+
+def _format_headers(headers, negate, *names):
+    # current server impl. expects content-type to be present, so if for
+    # some reason we do not have headers, we have to return at least that
+    # one
+    if not headers:
+        logger.warning("No headers found")
+        return {str('content-type'): str('')}
+
+    names = map(lambda s: s.upper(), names)
+
+    if negate:
+        def cond(key):
+            return key.upper() not in names
+    else:
+        def cond(key):
+            return key.upper() in names
+
+    if isinstance(headers, list):
+        headers = dict(headers)
+
+    # default to most likely standard
+    charset = find_charset(headers, "utf-8")
+
+    # We will return a copy of the headers dictionary that
+    # will allow case-insensitive lookups. In some parts of the twisted imap
+    # server code the keys are expected to be in lower case, and in this way
+    # we avoid having to convert them.
+
+    _headers = CaseInsensitiveDict()
+    for key, value in headers.items():
+        if not isinstance(key, str):
+            key = key.encode(charset, 'replace')
+        if not isinstance(value, str):
+            value = value.encode(charset, 'replace')
+
+        if value.endswith(";"):
+            # bastards
+            value = value[:-1]
+
+        # filter original dict by negate-condition
+        if cond(key):
+            _headers[key] = value
+
+    return _headers
diff --git a/src/leap/mail/imap/parser.py b/src/leap/mail/imap/parser.py
deleted file mode 100644
index 4a801b0..0000000
--- a/src/leap/mail/imap/parser.py
+++ /dev/null
@@ -1,45 +0,0 @@
-# -*- coding: utf-8 -*-
-# parser.py
-# Copyright (C) 2013 LEAP
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-"""
-Mail parser mixin.
-"""
-import re
-
-
-class MBoxParser(object):
-    """
-    Utility function to parse mailbox names.
-    """
-    INBOX_NAME = "INBOX"
-    INBOX_RE = re.compile(INBOX_NAME, re.IGNORECASE)
-
-    def _parse_mailbox_name(self, name):
-        """
-        Return a normalized representation of the mailbox C{name}.
-
-        This method ensures that an eventual initial 'inbox' part of a
-        mailbox name is made uppercase.
-
-        :param name: the name of the mailbox
-        :type name: unicode
-
-        :rtype: unicode
-        """
-        if self.INBOX_RE.match(name):
-            # ensure inital INBOX is uppercase
-            return self.INBOX_NAME + name[len(self.INBOX_NAME):]
-        return name
diff --git a/src/leap/mail/imap/server.py b/src/leap/mail/imap/server.py
index fe56ea6..39f483f 100644
--- a/src/leap/mail/imap/server.py
+++ b/src/leap/mail/imap/server.py
@@ -15,18 +15,19 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
-Leap IMAP4 Server Implementation.
+LEAP IMAP4 Server Implementation.
 """
+import StringIO
 from copy import copy
 
 from twisted import cred
+from twisted.internet import reactor
 from twisted.internet.defer import maybeDeferred
 from twisted.mail import imap4
 from twisted.python import log
 
-from leap.common import events as leap_events
 from leap.common.check import leap_assert, leap_assert_type
-from leap.common.events.events_pb2 import IMAP_CLIENT_LOGIN
+from leap.common.events import emit, catalog
 from leap.soledad.client import Soledad
 
 # imports for LITERAL+ patch
@@ -35,9 +36,41 @@ from twisted.mail.imap4 import IllegalClientResponse
 from twisted.mail.imap4 import LiteralString, LiteralFile
 
 
-class LeapIMAPServer(imap4.IMAP4Server):
+def _getContentType(msg):
     """
-    An IMAP4 Server with mailboxes backed by soledad
+    Return a two-tuple of the main and subtype of the given message.
+    """
+    attrs = None
+    mm = msg.getHeaders(False, 'content-type').get('content-type', None)
+    if mm:
+        mm = ''.join(mm.splitlines())
+        mimetype = mm.split(';')
+        if mimetype:
+            type = mimetype[0].split('/', 1)
+            if len(type) == 1:
+                major = type[0]
+                minor = None
+            elif len(type) == 2:
+                major, minor = type
+            else:
+                major = minor = None
+            # XXX patched ---------------------------------------------
+            attrs = dict(x.strip().split('=', 1) for x in mimetype[1:])
+            # XXX patched ---------------------------------------------
+        else:
+            major = minor = None
+    else:
+        major = minor = None
+    return major, minor, attrs
+
+# Monkey-patch _getContentType to avoid bug that passes lower-case boundary in
+# BODYSTRUCTURE response.
+imap4._getContentType = _getContentType
+
+
+class LEAPIMAPServer(imap4.IMAP4Server):
+    """
+    An IMAP4 Server with a LEAP Storage Backend.
     """
     def __init__(self, *args, **kwargs):
         # pop extraneous arguments
@@ -59,8 +92,87 @@ class LeapIMAPServer(imap4.IMAP4Server):
         # populate the test account properly (and only once
         # per session)
 
-        from twisted.internet import reactor
-        self.reactor = reactor
+    #############################################################
+    #
+    # Twisted imap4 patch to workaround bad mime rendering  in TB.
+    # See https://leap.se/code/issues/6773
+    # and https://bugzilla.mozilla.org/show_bug.cgi?id=149771
+    # Still unclear if this is a thunderbird bug.
+    # TODO send this patch upstream
+    #
+    #############################################################
+
+    def spew_body(self, part, id, msg, _w=None, _f=None):
+        if _w is None:
+            _w = self.transport.write
+        for p in part.part:
+            if msg.isMultipart():
+                msg = msg.getSubPart(p)
+            elif p > 0:
+                # Non-multipart messages have an implicit first part but no
+                # other parts - reject any request for any other part.
+                raise TypeError("Requested subpart of non-multipart message")
+
+        if part.header:
+            hdrs = msg.getHeaders(part.header.negate, *part.header.fields)
+            hdrs = imap4._formatHeaders(hdrs)
+            # PATCHED ##########################################
+            _w(str(part) + ' ' + imap4._literal(hdrs + "\r\n"))
+            # PATCHED ##########################################
+        elif part.text:
+            _w(str(part) + ' ')
+            _f()
+            return imap4.FileProducer(
+                msg.getBodyFile()
+            ).beginProducing(self.transport)
+        elif part.mime:
+            hdrs = imap4._formatHeaders(msg.getHeaders(True))
+
+            # PATCHED ##########################################
+            _w(str(part) + ' ' + imap4._literal(hdrs + "\r\n"))
+            # END PATCHED ######################################
+
+        elif part.empty:
+            _w(str(part) + ' ')
+            _f()
+            if part.part:
+                # PATCHED #############################################
+                # implement partial FETCH
+                # TODO implement boundary checks
+                # TODO see if there's a more efficient way, without
+                # copying the original content into a new buffer.
+                fd = msg.getBodyFile()
+                begin = getattr(part, "partialBegin", None)
+                _len = getattr(part, "partialLength", None)
+                if begin is not None and _len is not None:
+                    _fd = StringIO.StringIO()
+                    fd.seek(part.partialBegin)
+                    _fd.write(fd.read(part.partialLength))
+                    _fd.seek(0)
+                else:
+                    _fd = fd
+                return imap4.FileProducer(
+                    _fd
+                    # END PATCHED #########################3
+                ).beginProducing(self.transport)
+            else:
+                mf = imap4.IMessageFile(msg, None)
+                if mf is not None:
+                    return imap4.FileProducer(
+                        mf.open()).beginProducing(self.transport)
+                return imap4.MessageProducer(
+                    msg, None, self._scheduler).beginProducing(self.transport)
+
+        else:
+            _w('BODY ' +
+               imap4.collapseNestedLists([imap4.getBodyStructure(msg)]))
+
+    ##################################################################
+    #
+    # END Twisted imap4 patch to workaround bad mime rendering  in TB.
+    # #6773
+    #
+    ##################################################################
 
     def lineReceived(self, line):
         """
@@ -69,7 +181,7 @@ class LeapIMAPServer(imap4.IMAP4Server):
         :param line: the line from the server, without the line delimiter.
         :type line: str
         """
-        if self.theAccount.closed is True and self.state != "unauth":
+        if self.theAccount.session_ended is True and self.state != "unauth":
             log.msg("Closing the session. State: unauth")
             self.state = "unauth"
 
@@ -82,6 +194,20 @@ class LeapIMAPServer(imap4.IMAP4Server):
         log.msg('rcv (%s): %s' % (self.state, msg))
         imap4.IMAP4Server.lineReceived(self, line)
 
+    def close_server_connection(self):
+        """
+        Send a BYE command so that the MUA at least knows that we're closing
+        the connection.
+        """
+        self.sendLine(
+            '* BYE LEAP IMAP Proxy is shutting down; '
+            'so long and thanks for all the fish')
+        self.transport.loseConnection()
+        if self.mbox:
+            self.mbox.removeListener(self)
+            self.mbox = None
+        self.state = 'unauth'
+
     def authenticateLogin(self, username, password):
         """
         Lookup the account with the given parameters, and deny
@@ -98,7 +224,7 @@ class LeapIMAPServer(imap4.IMAP4Server):
             # bad username, reject.
             raise cred.error.UnauthorizedLogin()
         # any dummy password is allowed so far. use realm instead!
-        leap_events.signal(IMAP_CLIENT_LOGIN, "1")
+        emit(catalog.IMAP_CLIENT_LOGIN, "1")
         return imap4.IAccount, self.theAccount, lambda: None
 
     def do_FETCH(self, tag, messages, query, uid=0):
@@ -147,12 +273,15 @@ class LeapIMAPServer(imap4.IMAP4Server):
         """
         Notify new messages to listeners.
         """
-        self.reactor.callFromThread(self.mbox.notify_new)
+        reactor.callFromThread(self.mbox.notify_new)
 
     def _cbSelectWork(self, mbox, cmdName, tag):
         """
-        Callback for selectWork, patched to avoid conformance errors due to
-        incomplete UIDVALIDITY line.
+        Callback for selectWork
+
+        * patched to avoid conformance errors due to incomplete UIDVALIDITY
+        line.
+        * patched to accept deferreds for messagecount and recent count
         """
         if mbox is None:
             self.sendNegativeResponse(tag, 'No such mailbox')
@@ -161,12 +290,22 @@ class LeapIMAPServer(imap4.IMAP4Server):
             self.sendNegativeResponse(tag, 'Mailbox cannot be selected')
             return
 
+        d1 = defer.maybeDeferred(mbox.getMessageCount)
+        d2 = defer.maybeDeferred(mbox.getRecentCount)
+        return defer.gatherResults([d1, d2]).addCallback(
+            self.__cbSelectWork, mbox, cmdName, tag)
+
+    def __cbSelectWork(self, ((msg_count, recent_count)), mbox, cmdName, tag):
         flags = mbox.getFlags()
-        self.sendUntaggedResponse(str(mbox.getMessageCount()) + ' EXISTS')
-        self.sendUntaggedResponse(str(mbox.getRecentCount()) + ' RECENT')
         self.sendUntaggedResponse('FLAGS (%s)' % ' '.join(flags))
 
         # Patched -------------------------------------------------------
+        # accept deferreds for the count
+        self.sendUntaggedResponse(str(msg_count) + ' EXISTS')
+        self.sendUntaggedResponse(str(recent_count) + ' RECENT')
+        # ----------------------------------------------------------------
+
+        # Patched -------------------------------------------------------
         # imaptest was complaining about the incomplete line, we're adding
         # "UIDs valid" here.
         self.sendPositiveResponse(
@@ -188,8 +327,7 @@ class LeapIMAPServer(imap4.IMAP4Server):
         a deferred, the client will only be informed of success (or failure)
         when the deferred's callback (or errback) is invoked.
         """
-        # TODO return the output of _memstore.is_writing
-        # XXX and that should return a deferred!
+        # TODO implement a collection of ongoing deferreds?
         return None
 
     #############################################################
@@ -311,21 +449,247 @@ class LeapIMAPServer(imap4.IMAP4Server):
         return self._fileLiteral(size, literalPlus)
         #############################
 
-    # Need to override the command table after patching
-    # arg_astring and arg_literal
+    # --------------------------------- isSubscribed patch
+    # TODO -- send patch upstream.
+    # There is a bug in twisted implementation:
+    # in cbListWork, it's assumed that account.isSubscribed IS a callable,
+    # although in the interface documentation it's stated that it can be
+    # a deferred.
+
+    def _listWork(self, tag, ref, mbox, sub, cmdName):
+        mbox = self._parseMbox(mbox)
+        mailboxes = maybeDeferred(self.account.listMailboxes, ref, mbox)
+        mailboxes.addCallback(self._cbSubscribed)
+        mailboxes.addCallback(
+            self._cbListWork, tag, sub, cmdName,
+        ).addErrback(self._ebListWork, tag)
+
+    def _cbSubscribed(self, mailboxes):
+        subscribed = [
+            maybeDeferred(self.account.isSubscribed, name)
+            for (name, box) in mailboxes]
+
+        def get_mailboxes_and_subs(result):
+            subscribed = [i[0] for i, yes in zip(mailboxes, result) if yes]
+            return mailboxes, subscribed
+
+        d = defer.gatherResults(subscribed)
+        d.addCallback(get_mailboxes_and_subs)
+        return d
+
+    def _cbListWork(self, mailboxes_subscribed, tag, sub, cmdName):
+        mailboxes, subscribed = mailboxes_subscribed
+
+        for (name, box) in mailboxes:
+            if not sub or name in subscribed:
+                flags = box.getFlags()
+                delim = box.getHierarchicalDelimiter()
+                resp = (imap4.DontQuoteMe(cmdName),
+                        map(imap4.DontQuoteMe, flags),
+                        delim, name.encode('imap4-utf-7'))
+                self.sendUntaggedResponse(
+                    imap4.collapseNestedLists(resp))
+        self.sendPositiveResponse(tag, '%s completed' % (cmdName,))
+    # -------------------- end isSubscribed patch -----------
+
+    # TODO subscribe method had also to be changed to accomodate deferred
+    def do_SUBSCRIBE(self, tag, name):
+        name = self._parseMbox(name)
+
+        def _subscribeCb(_):
+            self.sendPositiveResponse(tag, 'Subscribed')
+
+        def _subscribeEb(failure):
+            m = failure.value
+            log.err()
+            if failure.check(imap4.MailboxException):
+                self.sendNegativeResponse(tag, str(m))
+            else:
+                self.sendBadResponse(
+                    tag,
+                    "Server error encountered while subscribing to mailbox")
+
+        d = self.account.subscribe(name)
+        d.addCallbacks(_subscribeCb, _subscribeEb)
+        return d
+
+    auth_SUBSCRIBE = (do_SUBSCRIBE, arg_astring)
+    select_SUBSCRIBE = auth_SUBSCRIBE
+
+    def do_UNSUBSCRIBE(self, tag, name):
+        # unsubscribe method had also to be changed to accomodate
+        # deferred
+        name = self._parseMbox(name)
+
+        def _unsubscribeCb(_):
+            self.sendPositiveResponse(tag, 'Unsubscribed')
+
+        def _unsubscribeEb(failure):
+            m = failure.value
+            log.err()
+            if failure.check(imap4.MailboxException):
+                self.sendNegativeResponse(tag, str(m))
+            else:
+                self.sendBadResponse(
+                    tag,
+                    "Server error encountered while unsubscribing "
+                    "from mailbox")
+
+        d = self.account.unsubscribe(name)
+        d.addCallbacks(_unsubscribeCb, _unsubscribeEb)
+        return d
+
+    auth_UNSUBSCRIBE = (do_UNSUBSCRIBE, arg_astring)
+    select_UNSUBSCRIBE = auth_UNSUBSCRIBE
+
+    def do_RENAME(self, tag, oldname, newname):
+        oldname, newname = [self._parseMbox(n) for n in oldname, newname]
+        if oldname.lower() == 'inbox' or newname.lower() == 'inbox':
+            self.sendNegativeResponse(
+                tag,
+                'You cannot rename the inbox, or '
+                'rename another mailbox to inbox.')
+            return
 
+        def _renameCb(_):
+            self.sendPositiveResponse(tag, 'Mailbox renamed')
+
+        def _renameEb(failure):
+            m = failure.value
+            if failure.check(TypeError):
+                self.sendBadResponse(tag, 'Invalid command syntax')
+            elif failure.check(imap4.MailboxException):
+                self.sendNegativeResponse(tag, str(m))
+            else:
+                log.err()
+                self.sendBadResponse(
+                    tag,
+                    "Server error encountered while "
+                    "renaming mailbox")
+
+        d = self.account.rename(oldname, newname)
+        d.addCallbacks(_renameCb, _renameEb)
+        return d
+
+    auth_RENAME = (do_RENAME, arg_astring, arg_astring)
+    select_RENAME = auth_RENAME
+
+    def do_CREATE(self, tag, name):
+        name = self._parseMbox(name)
+
+        def _createCb(result):
+            if result:
+                self.sendPositiveResponse(tag, 'Mailbox created')
+            else:
+                self.sendNegativeResponse(tag, 'Mailbox not created')
+
+        def _createEb(failure):
+            c = failure.value
+            if failure.check(imap4.MailboxException):
+                self.sendNegativeResponse(tag, str(c))
+            else:
+                log.err()
+                self.sendBadResponse(
+                    tag, "Server error encountered while creating mailbox")
+
+        d = self.account.create(name)
+        d.addCallbacks(_createCb, _createEb)
+        return d
+
+    auth_CREATE = (do_CREATE, arg_astring)
+    select_CREATE = auth_CREATE
+
+    def do_DELETE(self, tag, name):
+        name = self._parseMbox(name)
+        if name.lower() == 'inbox':
+            self.sendNegativeResponse(tag, 'You cannot delete the inbox')
+            return
+
+        def _deleteCb(result):
+            self.sendPositiveResponse(tag, 'Mailbox deleted')
+
+        def _deleteEb(failure):
+            m = failure.value
+            if failure.check(imap4.MailboxException):
+                self.sendNegativeResponse(tag, str(m))
+            else:
+                print "SERVER: other error"
+                log.err()
+                self.sendBadResponse(
+                    tag,
+                    "Server error encountered while deleting mailbox")
+
+        d = self.account.delete(name)
+        d.addCallbacks(_deleteCb, _deleteEb)
+        return d
+
+    auth_DELETE = (do_DELETE, arg_astring)
+    select_DELETE = auth_DELETE
+
+    # -----------------------------------------------------------------------
+    # Patched just to allow __cbAppend to receive a deferred from messageCount
+    # TODO format and send upstream.
+    def do_APPEND(self, tag, mailbox, flags, date, message):
+        mailbox = self._parseMbox(mailbox)
+        maybeDeferred(self.account.select, mailbox).addCallback(
+            self._cbAppendGotMailbox, tag, flags, date, message).addErrback(
+            self._ebAppendGotMailbox, tag)
+
+    def __ebAppend(self, failure, tag):
+        self.sendBadResponse(tag, 'APPEND failed: ' + str(failure.value))
+
+    def _cbAppendGotMailbox(self, mbox, tag, flags, date, message):
+        if not mbox:
+            self.sendNegativeResponse(tag, '[TRYCREATE] No such mailbox')
+            return
+
+        d = mbox.addMessage(message, flags, date)
+        d.addCallback(self.__cbAppend, tag, mbox)
+        d.addErrback(self.__ebAppend, tag)
+
+    def _ebAppendGotMailbox(self, failure, tag):
+        self.sendBadResponse(
+            tag, "Server error encountered while opening mailbox.")
+        log.err(failure)
+
+    def __cbAppend(self, result, tag, mbox):
+
+        # XXX patched ---------------------------------
+        def send_response(count):
+            self.sendUntaggedResponse('%d EXISTS' % count)
+            self.sendPositiveResponse(tag, 'APPEND complete')
+
+        d = mbox.getMessageCount()
+        d.addCallback(send_response)
+        return d
+        # XXX patched ---------------------------------
+
+    # -----------------------------------------------------------------------
+
+    auth_APPEND = (do_APPEND, arg_astring, imap4.IMAP4Server.opt_plist,
+                   imap4.IMAP4Server.opt_datetime, arg_literal)
+    select_APPEND = auth_APPEND
+
+    # Need to override the command table after patching
+    # arg_astring and arg_literal, except on the methods that we are already
+    # overriding.
+
+    # TODO --------------------------------------------
+    # Check if we really need to override these
+    # methods, or we can monkeypatch.
+    # do_DELETE = imap4.IMAP4Server.do_DELETE
+    # do_CREATE = imap4.IMAP4Server.do_CREATE
+    # do_RENAME = imap4.IMAP4Server.do_RENAME
+    # do_SUBSCRIBE = imap4.IMAP4Server.do_SUBSCRIBE
+    # do_UNSUBSCRIBE = imap4.IMAP4Server.do_UNSUBSCRIBE
+    # do_APPEND = imap4.IMAP4Server.do_APPEND
+    # -------------------------------------------------
     do_LOGIN = imap4.IMAP4Server.do_LOGIN
-    do_CREATE = imap4.IMAP4Server.do_CREATE
-    do_DELETE = imap4.IMAP4Server.do_DELETE
-    do_RENAME = imap4.IMAP4Server.do_RENAME
-    do_SUBSCRIBE = imap4.IMAP4Server.do_SUBSCRIBE
-    do_UNSUBSCRIBE = imap4.IMAP4Server.do_UNSUBSCRIBE
     do_STATUS = imap4.IMAP4Server.do_STATUS
-    do_APPEND = imap4.IMAP4Server.do_APPEND
     do_COPY = imap4.IMAP4Server.do_COPY
 
     _selectWork = imap4.IMAP4Server._selectWork
-    _listWork = imap4.IMAP4Server._listWork
+
     arg_plist = imap4.IMAP4Server.arg_plist
     arg_seqset = imap4.IMAP4Server.arg_seqset
     opt_plist = imap4.IMAP4Server.opt_plist
@@ -342,8 +706,15 @@ class LeapIMAPServer(imap4.IMAP4Server):
     auth_EXAMINE = (_selectWork, arg_astring, 0, 'EXAMINE')
     select_EXAMINE = auth_EXAMINE
 
-    auth_DELETE = (do_DELETE, arg_astring)
-    select_DELETE = auth_DELETE
+    # TODO -----------------------------------------------
+    # re-add if we stop overriding DELETE
+    # auth_DELETE = (do_DELETE, arg_astring)
+    # select_DELETE = auth_DELETE
+    # auth_APPEND = (do_APPEND, arg_astring, opt_plist, opt_datetime,
+    #                arg_literal)
+    # select_APPEND = auth_APPEND
+
+    # ----------------------------------------------------
 
     auth_RENAME = (do_RENAME, arg_astring, arg_astring)
     select_RENAME = auth_RENAME
@@ -363,13 +734,8 @@ class LeapIMAPServer(imap4.IMAP4Server):
     auth_STATUS = (do_STATUS, arg_astring, arg_plist)
     select_STATUS = auth_STATUS
 
-    auth_APPEND = (do_APPEND, arg_astring, opt_plist, opt_datetime,
-                   arg_literal)
-    select_APPEND = auth_APPEND
-
     select_COPY = (do_COPY, arg_seqset, arg_astring)
 
-
     #############################################################
     # END of Twisted imap4 patch to support LITERAL+ extension
     #############################################################
diff --git a/src/leap/mail/imap/service/imap-server.tac b/src/leap/mail/imap/service/imap-server.tac
index 651f71b..2045757 100644
--- a/src/leap/mail/imap/service/imap-server.tac
+++ b/src/leap/mail/imap/service/imap-server.tac
@@ -23,9 +23,9 @@ For now, and for debugging/testing purposes, you need
 to pass a config file with the following structure:
 
 [leap_mail]
-userid = "user@provider"
-uuid = "deadbeefdeadabad"
-passwd = "supersecret" # optional, will get prompted if not found.
+userid = 'user@provider'
+uuid = 'deadbeefdeadabad'
+passwd = 'supersecret' # optional, will get prompted if not found.
 """
 import ConfigParser
 import getpass
@@ -53,38 +53,17 @@ def initialize_soledad(uuid, email, passwd,
     :param tempdir: path to temporal dir
     :rtype: Soledad instance
     """
-    # XXX TODO unify with an authoritative source of mocks
-    # for soledad (or partial initializations).
-    # This is copied from the imap tests.
-
     server_url = "http://provider"
     cert_file = ""
 
-    class Mock(object):
-        def __init__(self, return_value=None):
-            self._return = return_value
-
-        def __call__(self, *args, **kwargs):
-            return self._return
-
-    class MockSharedDB(object):
-
-        get_doc = Mock()
-        put_doc = Mock()
-        lock = Mock(return_value=('atoken', 300))
-        unlock = Mock(return_value=True)
-
-        def __call__(self):
-            return self
-
-    Soledad._shared_db = MockSharedDB()
     soledad = Soledad(
         uuid,
         passwd,
         secrets,
         localdb,
         server_url,
-        cert_file)
+        cert_file,
+        syncable=False)
 
     return soledad
 
@@ -95,9 +74,9 @@ def initialize_soledad(uuid, email, passwd,
 print "[+] Running LEAP IMAP Service"
 
 
-bmconf = os.environ.get("LEAP_MAIL_CONF", "")
+bmconf = os.environ.get("LEAP_MAIL_CONFIG", "")
 if not bmconf:
-    print ("[-] Please set LEAP_MAIL_CONF environment variable "
+    print ("[-] Please set LEAP_MAIL_CONFIG environment variable "
            "pointing to your config.")
     sys.exit(1)
 
@@ -131,6 +110,7 @@ tempdir = "/tmp/"
 
 # Ad-hoc soledad/keymanager initialization.
 
+print "[~] user:", userid
 soledad = initialize_soledad(uuid, userid, passwd, secrets,
                              localdb, gnupg_home, tempdir)
 km_args = (userid, "https://localhost", soledad)
diff --git a/src/leap/mail/imap/service/imap.py b/src/leap/mail/imap/service/imap.py
index 10ba32a..c3ae59a 100644
--- a/src/leap/mail/imap/service/imap.py
+++ b/src/leap/mail/imap/service/imap.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 # imap.py
-# Copyright (C) 2013 LEAP
+# Copyright (C) 2013-2015 LEAP
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -15,58 +15,27 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
-Imap service initialization
+IMAP service initialization
 """
 import logging
 import os
-import time
 
-from twisted.internet import defer, threads
-from twisted.internet.protocol import ServerFactory
+from collections import defaultdict
+
+from twisted.internet import reactor
 from twisted.internet.error import CannotListenError
+from twisted.internet.protocol import ServerFactory
 from twisted.mail import imap4
 from twisted.python import log
 
-logger = logging.getLogger(__name__)
+from leap.common.events import emit, catalog
+from leap.common.check import leap_check
+from leap.mail.imap.account import IMAPAccount
+from leap.mail.imap.server import LEAPIMAPServer
 
-from leap.common import events as leap_events
-from leap.common.check import leap_assert, leap_assert_type, leap_check
-from leap.keymanager import KeyManager
-from leap.mail.imap.account import SoledadBackedAccount
-from leap.mail.imap.fetch import LeapIncomingMail
-from leap.mail.imap.memorystore import MemoryStore
-from leap.mail.imap.server import LeapIMAPServer
-from leap.mail.imap.soledadstore import SoledadStore
-from leap.soledad.client import Soledad
-
-# The default port in which imap service will run
-IMAP_PORT = 1984
+# TODO: leave only an implementor of IService in here
 
-# The period between succesive checks of the incoming mail
-# queue (in seconds)
-INCOMING_CHECK_PERIOD = 60
-
-from leap.common.events.events_pb2 import IMAP_SERVICE_STARTED
-from leap.common.events.events_pb2 import IMAP_SERVICE_FAILED_TO_START
-
-######################################################
-# Temporary workaround for RecursionLimit when using
-# qt4reactor. Do remove when we move to poll or select
-# reactor, which do not show those problems. See #4974
-import resource
-import sys
-
-try:
-    sys.setrecursionlimit(10**7)
-except Exception:
-    print "Error setting recursion limit"
-try:
-    # Increase max stack size from 8MB to 256MB
-    resource.setrlimit(resource.RLIMIT_STACK, (2**28, -1))
-except Exception:
-    print "Error setting stack size"
-
-######################################################
+logger = logging.getLogger(__name__)
 
 DO_MANHOLE = os.environ.get("LEAP_MAIL_MANHOLE", None)
 if DO_MANHOLE:
@@ -81,6 +50,9 @@ if DO_PROFILE:
     pr = cProfile.Profile()
     pr.enable()
 
+# The default port in which imap service will run
+IMAP_PORT = 1984
+
 
 class IMAPAuthRealm(object):
     """
@@ -97,6 +69,7 @@ class LeapIMAPFactory(ServerFactory):
     Factory for a IMAP4 server with soledad remote sync and gpg-decryption
     capabilities.
     """
+    protocol = LEAPIMAPServer
 
     def __init__(self, uuid, userid, soledad):
         """
@@ -114,14 +87,10 @@ class LeapIMAPFactory(ServerFactory):
         self._uuid = uuid
         self._userid = userid
         self._soledad = soledad
-        self._memstore = MemoryStore(
-            permanent_store=SoledadStore(soledad))
 
-        theAccount = SoledadBackedAccount(
-            uuid, soledad=soledad,
-            memstore=self._memstore)
+        theAccount = IMAPAccount(uuid, soledad)
         self.theAccount = theAccount
-
+        self._connections = defaultdict()
         # XXX how to pass the store along?
 
     def buildProtocol(self, addr):
@@ -131,91 +100,66 @@ class LeapIMAPFactory(ServerFactory):
         :param addr: remote ip address
         :type addr:  str
         """
-        imapProtocol = LeapIMAPServer(
+        # TODO should reject anything from addr != localhost,
+        # just in case.
+        log.msg("Building protocol for connection %s" % addr)
+        imapProtocol = self.protocol(
             uuid=self._uuid,
             userid=self._userid,
             soledad=self._soledad)
         imapProtocol.theAccount = self.theAccount
         imapProtocol.factory = self
+
+        self._connections[addr] = imapProtocol
         return imapProtocol
 
-    def doStop(self, cv=None):
+    def stopFactory(self):
+        # say bye!
+        for conn, proto in self._connections.items():
+            log.msg("Closing connections for %s" % conn)
+            proto.close_server_connection()
+
+    def doStop(self):
         """
         Stops imap service (fetcher, factory and port).
-
-        :param cv: A condition variable to which we can signal when imap
-                   indeed stops.
-        :type cv: threading.Condition
-        :return: a Deferred that stops and flushes the in memory store data to
-                 disk in another thread.
-        :rtype: Deferred
         """
+        # mark account as unusable, so any imap command will fail
+        # with unauth state.
+        self.theAccount.end_session()
+
+        # TODO should wait for all the pending deferreds,
+        # the twisted way!
         if DO_PROFILE:
             log.msg("Stopping PROFILING")
             pr.disable()
             pr.dump_stats(PROFILE_DAT)
 
-        ServerFactory.doStop(self)
-
-        if cv is not None:
-            def _stop_imap_cb():
-                logger.debug('Stopping in memory store.')
-                self._memstore.stop_and_flush()
-                while not self._memstore.producer.is_queue_empty():
-                    logger.debug('Waiting for queue to be empty.')
-                    # TODO use a gatherResults over the new/dirty
-                    # deferred list,
-                    # as in memorystore's expunge() method.
-                    time.sleep(1)
-                # notify that service has stopped
-                logger.debug('Notifying that service has stopped.')
-                cv.acquire()
-                cv.notify()
-                cv.release()
-
-            return threads.deferToThread(_stop_imap_cb)
+        return ServerFactory.doStop(self)
 
 
-def run_service(*args, **kwargs):
+def run_service(store, **kwargs):
     """
     Main entry point to run the service from the client.
 
-    :returns: the LoopingCall instance that will have to be stoppped
-              before shutting down the client, the port as returned by
-              the reactor when starts listening, and the factory for
-              the protocol.
-    """
-    from twisted.internet import reactor
-    # it looks like qtreactor does not honor this,
-    # but other reactors should.
-    reactor.suggestThreadPoolSize(20)
+    :param store: a soledad instance
 
-    leap_assert(len(args) == 2)
-    soledad, keymanager = args
-    leap_assert_type(soledad, Soledad)
-    leap_assert_type(keymanager, KeyManager)
+    :returns: the port as returned by the reactor when starts listening, and
+              the factory for the protocol.
+    """
+    leap_check(store, "store cannot be None")
+    # XXX this can also be a ProxiedObject, FIXME
+    # leap_assert_type(store, Soledad)
 
     port = kwargs.get('port', IMAP_PORT)
-    check_period = kwargs.get('check_period', INCOMING_CHECK_PERIOD)
     userid = kwargs.get('userid', None)
     leap_check(userid is not None, "need an user id")
-    offline = kwargs.get('offline', False)
 
-    uuid = soledad._get_uuid()
-    factory = LeapIMAPFactory(uuid, userid, soledad)
+    uuid = store.uuid
+    factory = LeapIMAPFactory(uuid, userid, store)
 
     try:
         tport = reactor.listenTCP(port, factory,
                                   interface="localhost")
-        if not offline:
-            fetcher = LeapIncomingMail(
-                keymanager,
-                soledad,
-                factory.theAccount,
-                check_period,
-                userid)
-        else:
-            fetcher = None
     except CannotListenError:
         logger.error("IMAP Service failed to start: "
                      "cannot listen in port %s" % (port,))
@@ -223,7 +167,6 @@ def run_service(*args, **kwargs):
         logger.error("Error launching IMAP service: %r" % (exc,))
     else:
         # all good.
-        # (the caller has still to call fetcher.start_loop)
 
         if DO_MANHOLE:
             # TODO get pass from env var.too.
@@ -235,8 +178,10 @@ def run_service(*args, **kwargs):
             reactor.listenTCP(manhole.MANHOLE_PORT, manhole_factory,
                               interface="127.0.0.1")
         logger.debug("IMAP4 Server is RUNNING in port  %s" % (port,))
-        leap_events.signal(IMAP_SERVICE_STARTED, str(port))
-        return fetcher, tport, factory
+        emit(catalog.IMAP_SERVICE_STARTED, str(port))
+
+        # FIXME -- change service signature
+        return tport, factory
 
     # not ok, signal error.
-    leap_events.signal(IMAP_SERVICE_FAILED_TO_START, str(port))
+    emit(catalog.IMAP_SERVICE_FAILED_TO_START, str(port))
diff --git a/src/leap/mail/imap/soledadstore.py b/src/leap/mail/imap/soledadstore.py
deleted file mode 100644
index f3de8eb..0000000
--- a/src/leap/mail/imap/soledadstore.py
+++ /dev/null
@@ -1,620 +0,0 @@
-# -*- coding: utf-8 -*-
-# soledadstore.py
-# Copyright (C) 2014 LEAP
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-"""
-A MessageStore that writes to Soledad.
-"""
-import logging
-import threading
-
-from collections import defaultdict
-from itertools import chain
-
-from u1db import errors as u1db_errors
-from twisted.python import log
-from zope.interface import implements
-
-from leap.common.check import leap_assert_type, leap_assert
-from leap.mail.decorators import deferred_to_thread
-from leap.mail.imap.messageparts import MessagePartType
-from leap.mail.imap.messageparts import MessageWrapper
-from leap.mail.imap.messageparts import RecentFlagsDoc
-from leap.mail.imap.fields import fields
-from leap.mail.imap.interfaces import IMessageStore
-from leap.mail.messageflow import IMessageConsumer
-from leap.mail.utils import first, empty, accumulator_queue
-
-logger = logging.getLogger(__name__)
-
-
-# TODO
-# [ ] Implement a retry queue?
-# [ ] Consider journaling of operations.
-
-
-class ContentDedup(object):
-    """
-    Message deduplication.
-
-    We do a query for the content hashes before writing to our beloved
-    sqlcipher backend of Soledad. This means, by now, that:
-
-    1. We will not store the same body/attachment twice, only the hash of it.
-    2. We will not store the same message header twice, only the hash of it.
-
-    The first case is useful if you are always receiving the same old memes
-    from unwary friends that still have not discovered that 4chan is the
-    generator of the internet. The second will save your day if you have
-    initiated session with the same account in two different machines. I also
-    wonder why would you do that, but let's respect each other choices, like
-    with the religious celebrations, and assume that one day we'll be able
-    to run Bitmask in completely free phones. Yes, I mean that, the whole GSM
-    Stack.
-    """
-    # TODO refactor using unique_query
-
-    def _header_does_exist(self, doc):
-        """
-        Check whether we already have a header document for this
-        content hash in our database.
-
-        :param doc: tentative header for document
-        :type doc: dict
-        :returns: True if it exists, False otherwise.
-        """
-        if not doc:
-            return False
-        chash = doc[fields.CONTENT_HASH_KEY]
-        header_docs = self._soledad.get_from_index(
-            fields.TYPE_C_HASH_IDX,
-            fields.TYPE_HEADERS_VAL, str(chash))
-        if not header_docs:
-            return False
-
-        # FIXME enable only to debug this problem.
-        #if len(header_docs) != 1:
-            #logger.warning("Found more than one copy of chash %s!"
-                           #% (chash,))
-
-        #logger.debug("Found header doc with that hash! Skipping save!")
-        return True
-
-    def _content_does_exist(self, doc):
-        """
-        Check whether we already have a content document for a payload
-        with this hash in our database.
-
-        :param doc: tentative content for document
-        :type doc: dict
-        :returns: True if it exists, False otherwise.
-        """
-        if not doc:
-            return False
-        phash = doc[fields.PAYLOAD_HASH_KEY]
-        attach_docs = self._soledad.get_from_index(
-            fields.TYPE_P_HASH_IDX,
-            fields.TYPE_CONTENT_VAL, str(phash))
-        if not attach_docs:
-            return False
-
-        # FIXME enable only to debug this problem
-        #if len(attach_docs) != 1:
-            #logger.warning("Found more than one copy of phash %s!"
-                           #% (phash,))
-        #logger.debug("Found attachment doc with that hash! Skipping save!")
-        return True
-
-
-class MsgWriteError(Exception):
-    """
-    Raised if any exception is found while saving message parts.
-    """
-    pass
-
-
-"""
-A lock per document.
-"""
-# TODO should bound the space of this!!!
-# http://stackoverflow.com/a/2437645/1157664
-# Setting this to twice the number of threads in the threadpool
-# should be safe.
-put_locks = defaultdict(lambda: threading.Lock())
-mbox_doc_locks = defaultdict(lambda: threading.Lock())
-
-
-class SoledadStore(ContentDedup):
-    """
-    This will create docs in the local Soledad database.
-    """
-    _remove_lock = threading.Lock()
-
-    implements(IMessageConsumer, IMessageStore)
-
-    def __init__(self, soledad):
-        """
-        Initialize the permanent store that writes to Soledad database.
-
-        :param soledad: the soledad instance
-        :type soledad: Soledad
-        """
-        from twisted.internet import reactor
-        self.reactor = reactor
-
-        self._soledad = soledad
-
-        self._CREATE_DOC_FUN = self._soledad.create_doc
-        self._PUT_DOC_FUN = self._soledad.put_doc
-        self._GET_DOC_FUN = self._soledad.get_doc
-
-        # we instantiate an accumulator to batch the notifications
-        self.docs_notify_queue = accumulator_queue(
-            lambda item: reactor.callFromThread(self._unset_new_dirty, item),
-            20)
-
-    # IMessageStore
-
-    # -------------------------------------------------------------------
-    # We are not yet using this interface, but it would make sense
-    # to implement it.
-
-    def create_message(self, mbox, uid, message):
-        """
-        Create the passed message into this SoledadStore.
-
-        :param mbox: the mbox this message belongs.
-        :type mbox: str or unicode
-        :param uid: the UID that identifies this message in this mailbox.
-        :type uid: int
-        :param message: a IMessageContainer implementor.
-        """
-        raise NotImplementedError()
-
-    def put_message(self, mbox, uid, message):
-        """
-        Put the passed existing message into this SoledadStore.
-
-        :param mbox: the mbox this message belongs.
-        :type mbox: str or unicode
-        :param uid: the UID that identifies this message in this mailbox.
-        :type uid: int
-        :param message: a IMessageContainer implementor.
-        """
-        raise NotImplementedError()
-
-    def remove_message(self, mbox, uid):
-        """
-        Remove the given message from this SoledadStore.
-
-        :param mbox: the mbox this message belongs.
-        :type mbox: str or unicode
-        :param uid: the UID that identifies this message in this mailbox.
-        :type uid: int
-        """
-        raise NotImplementedError()
-
-    def get_message(self, mbox, uid):
-        """
-        Get a IMessageContainer for the given mbox and uid combination.
-
-        :param mbox: the mbox this message belongs.
-        :type mbox: str or unicode
-        :param uid: the UID that identifies this message in this mailbox.
-        :type uid: int
-        """
-        raise NotImplementedError()
-
-    # IMessageConsumer
-
-    # TODO should handle the delete case
-    # TODO should handle errors better
-    # TODO could generalize this method into a generic consumer
-    # and only implement `process` here
-
-    def consume(self, queue):
-        """
-        Creates a new document in soledad db.
-
-        :param queue: a tuple of queues to get item from, with content of the
-                      document to be inserted.
-        :type queue: tuple of Queues
-        """
-        new, dirty = queue
-        while not new.empty():
-            doc_wrapper = new.get()
-            self.reactor.callInThread(self._consume_doc, doc_wrapper,
-                                      self.docs_notify_queue)
-        while not dirty.empty():
-            doc_wrapper = dirty.get()
-            self.reactor.callInThread(self._consume_doc, doc_wrapper,
-                                      self.docs_notify_queue)
-
-        # Queue empty, flush the notifications queue.
-        self.docs_notify_queue(None, flush=True)
-
-    def _unset_new_dirty(self, doc_wrapper):
-        """
-        Unset the `new` and `dirty` flags for this document wrapper in the
-        memory store.
-
-        :param doc_wrapper: a MessageWrapper instance
-        :type doc_wrapper: MessageWrapper
-        """
-        if isinstance(doc_wrapper, MessageWrapper):
-            # XXX still needed for debug quite often
-            #logger.info("unsetting new flag!")
-            doc_wrapper.new = False
-            doc_wrapper.dirty = False
-
-    @deferred_to_thread
-    def _consume_doc(self, doc_wrapper, notify_queue):
-        """
-        Consume each document wrapper in a separate thread.
-        We pass an instance of an accumulator that handles the notifications
-        to the memorystore when the write has been done.
-
-        :param doc_wrapper: a MessageWrapper or RecentFlagsDoc instance
-        :type doc_wrapper: MessageWrapper or RecentFlagsDoc
-        :param notify_queue: a callable that handles the writeback
-                             notifications to the memstore.
-        :type notify_queue: callable
-        """
-        def queueNotifyBack(failed, doc_wrapper):
-            if failed:
-                log.msg("There was an error writing the mesage...")
-            else:
-                notify_queue(doc_wrapper)
-
-        def doSoledadCalls(items):
-            # we prime the generator, that should return the
-            # message or flags wrapper item in the first place.
-            try:
-                doc_wrapper = items.next()
-            except StopIteration:
-                pass
-            else:
-                failed = self._soledad_write_document_parts(items)
-                queueNotifyBack(failed, doc_wrapper)
-
-        doSoledadCalls(self._iter_wrapper_subparts(doc_wrapper))
-
-    #
-    # SoledadStore specific methods.
-    #
-
-    def _soledad_write_document_parts(self, items):
-        """
-        Write the document parts to soledad in a separate thread.
-
-        :param items: the iterator through the different document wrappers
-                      payloads.
-        :type items: iterator
-        :return: whether the write was successful or not
-        :rtype: bool
-        """
-        failed = False
-        for item, call in items:
-            if empty(item):
-                continue
-            try:
-                self._try_call(call, item)
-            except Exception as exc:
-                logger.debug("ITEM WAS: %s" % repr(item))
-                if hasattr(item, 'content'):
-                    logger.debug("ITEM CONTENT WAS: %s" %
-                                 repr(item.content))
-                logger.exception(exc)
-                failed = True
-                continue
-        return failed
-
-    def _iter_wrapper_subparts(self, doc_wrapper):
-        """
-        Return an iterator that will yield the doc_wrapper in the first place,
-        followed by the subparts item and the proper call type for every
-        item in the queue, if any.
-
-        :param doc_wrapper: a MessageWrapper or RecentFlagsDoc instance
-        :type doc_wrapper: MessageWrapper or RecentFlagsDoc
-        """
-        if isinstance(doc_wrapper, MessageWrapper):
-            return chain((doc_wrapper,),
-                         self._get_calls_for_msg_parts(doc_wrapper))
-        elif isinstance(doc_wrapper, RecentFlagsDoc):
-            return chain((doc_wrapper,),
-                         self._get_calls_for_rflags_doc(doc_wrapper))
-        else:
-            logger.warning("CANNOT PROCESS ITEM!")
-            return (i for i in [])
-
-    def _try_call(self, call, item):
-        """
-        Try to invoke a given call with item as a parameter.
-
-        :param call: the function to call
-        :type call: callable
-        :param item: the payload to pass to the call as argument
-        :type item: object
-        """
-        if call is None:
-            return
-
-        if call == self._PUT_DOC_FUN:
-            doc_id = item.doc_id
-            if doc_id is None:
-                logger.warning("BUG! Dirty doc but has no doc_id!")
-                return
-            with put_locks[doc_id]:
-                doc = self._GET_DOC_FUN(doc_id)
-
-                if doc is None:
-                    logger.warning("BUG! Dirty doc but could not "
-                                   "find document %s" % (doc_id,))
-                    return
-
-                doc.content = dict(item.content)
-
-                item = doc
-                try:
-                    call(item)
-                except u1db_errors.RevisionConflict as exc:
-                    logger.exception("Error: %r" % (exc,))
-                    raise exc
-                except Exception as exc:
-                    logger.exception("Error: %r" % (exc,))
-                    raise exc
-
-        else:
-            try:
-                call(item)
-            except u1db_errors.RevisionConflict as exc:
-                logger.exception("Error: %r" % (exc,))
-                raise exc
-            except Exception as exc:
-                logger.exception("Error: %r" % (exc,))
-                raise exc
-
-    def _get_calls_for_msg_parts(self, msg_wrapper):
-        """
-        Generator that return the proper call type for a given item.
-
-        :param msg_wrapper: A MessageWrapper
-        :type msg_wrapper: IMessageContainer
-        :return: a generator of tuples with recent-flags doc payload
-                 and callable
-        :rtype: generator
-        """
-        call = None
-
-        if msg_wrapper.new:
-            call = self._CREATE_DOC_FUN
-
-            # item is expected to be a MessagePartDoc
-            for item in msg_wrapper.walk():
-                if item.part == MessagePartType.fdoc:
-                    yield dict(item.content), call
-
-                elif item.part == MessagePartType.hdoc:
-                    if not self._header_does_exist(item.content):
-                        yield dict(item.content), call
-
-                elif item.part == MessagePartType.cdoc:
-                    if not self._content_does_exist(item.content):
-                        yield dict(item.content), call
-
-        # For now, the only thing that will be dirty is
-        # the flags doc.
-
-        elif msg_wrapper.dirty:
-            call = self._PUT_DOC_FUN
-            # item is expected to be a MessagePartDoc
-            for item in msg_wrapper.walk():
-                # XXX FIXME Give error if dirty and not doc_id !!!
-                doc_id = item.doc_id  # defend!
-                if not doc_id:
-                    logger.warning("Dirty item but no doc_id!")
-                    continue
-
-                if item.part == MessagePartType.fdoc:
-                    #logger.debug("PUT dirty fdoc")
-                    yield item, call
-
-                # XXX also for linkage-doc !!!
-        else:
-            logger.error("Cannot delete documents yet from the queue...!")
-
-    def _get_calls_for_rflags_doc(self, rflags_wrapper):
-        """
-        We always put these documents.
-
-        :param rflags_wrapper: A wrapper around recent flags doc.
-        :type rflags_wrapper: RecentFlagsWrapper
-        :return: a tuple with recent-flags doc payload and callable
-        :rtype: tuple
-        """
-        call = self._PUT_DOC_FUN
-
-        payload = rflags_wrapper.content
-        if payload:
-            logger.debug("Saving RFLAGS to Soledad...")
-            yield rflags_wrapper, call
-
-    # Mbox documents and attributes
-
-    def get_mbox_document(self, mbox):
-        """
-        Return mailbox document.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :return: A SoledadDocument containing this mailbox, or None if
-                 the query failed.
-        :rtype: SoledadDocument or None.
-        """
-        with mbox_doc_locks[mbox]:
-            return self._get_mbox_document(mbox)
-
-    def _get_mbox_document(self, mbox):
-        """
-        Helper for returning the mailbox document.
-        """
-        try:
-            query = self._soledad.get_from_index(
-                fields.TYPE_MBOX_IDX,
-                fields.TYPE_MBOX_VAL, mbox)
-            if query:
-                return query.pop()
-            else:
-                logger.error("Could not find mbox document for %r" %
-                            (mbox,))
-        except Exception as exc:
-            logger.exception("Unhandled error %r" % exc)
-
-    def get_mbox_closed(self, mbox):
-        """
-        Return the closed attribute for a given mailbox.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :rtype: bool
-        """
-        mbox_doc = self.get_mbox_document()
-        return mbox_doc.content.get(fields.CLOSED_KEY, False)
-
-    def set_mbox_closed(self, mbox, closed):
-        """
-        Set the closed attribute for a given mailbox.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :param closed:  the value to be set
-        :type closed: bool
-        """
-        leap_assert(isinstance(closed, bool), "closed needs to be boolean")
-        with mbox_doc_locks[mbox]:
-            mbox_doc = self._get_mbox_document(mbox)
-            if mbox_doc is None:
-                logger.error(
-                    "Could not find mbox document for %r" % (mbox,))
-                return
-            mbox_doc.content[fields.CLOSED_KEY] = closed
-            self._soledad.put_doc(mbox_doc)
-
-    def write_last_uid(self, mbox, value):
-        """
-        Write the `last_uid` integer to the proper mailbox document
-        in Soledad.
-        This is called from the deferred triggered by
-        memorystore.increment_last_soledad_uid, which is expected to
-        run in a separate thread.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :param value: the value to set
-        :type value: int
-        """
-        leap_assert_type(value, int)
-        key = fields.LAST_UID_KEY
-
-        # XXX use accumulator to reduce number of hits
-        with mbox_doc_locks[mbox]:
-            mbox_doc = self._get_mbox_document(mbox)
-            old_val = mbox_doc.content[key]
-            if value > old_val:
-                mbox_doc.content[key] = value
-                try:
-                    self._soledad.put_doc(mbox_doc)
-                except Exception as exc:
-                    logger.error("Error while setting last_uid for %r"
-                                 % (mbox,))
-                    logger.exception(exc)
-
-    def get_flags_doc(self, mbox, uid):
-        """
-        Return the SoledadDocument for the given mbox and uid.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :param uid: the UID for the message
-        :type uid: int
-        :rtype: SoledadDocument or None
-        """
-        result = None
-        try:
-            flag_docs = self._soledad.get_from_index(
-                fields.TYPE_MBOX_UID_IDX,
-                fields.TYPE_FLAGS_VAL, mbox, str(uid))
-            if len(flag_docs) != 1:
-                logger.warning("More than one flag doc for %r:%s" %
-                               (mbox, uid))
-            result = first(flag_docs)
-        except Exception as exc:
-            # ugh! Something's broken down there!
-            logger.warning("ERROR while getting flags for UID: %s" % uid)
-            logger.exception(exc)
-        finally:
-            return result
-
-    def get_headers_doc(self, chash):
-        """
-        Return the document that keeps the headers for a message
-        indexed by its content-hash.
-
-        :param chash: the content-hash to retrieve the document from.
-        :type chash: str or unicode
-        :rtype: SoledadDocument or None
-        """
-        head_docs = self._soledad.get_from_index(
-            fields.TYPE_C_HASH_IDX,
-            fields.TYPE_HEADERS_VAL, str(chash))
-        return first(head_docs)
-
-    # deleted messages
-
-    def deleted_iter(self, mbox):
-        """
-        Get an iterator for the the doc_id for SoledadDocuments for messages
-        with \\Deleted flag for a given mailbox.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        :return: iterator through deleted message docs
-        :rtype: iterable
-        """
-        return [doc.doc_id for doc in self._soledad.get_from_index(
-                fields.TYPE_MBOX_DEL_IDX,
-                fields.TYPE_FLAGS_VAL, mbox, '1')]
-
-    def remove_all_deleted(self, mbox):
-        """
-        Remove from Soledad all messages flagged as deleted for a given
-        mailbox.
-
-        :param mbox: the mailbox
-        :type mbox: str or unicode
-        """
-        deleted = []
-        for doc_id in self.deleted_iter(mbox):
-            with self._remove_lock:
-                doc = self._soledad.get_doc(doc_id)
-                if doc is not None:
-                    self._soledad.delete_doc(doc)
-                    try:
-                        deleted.append(doc.content[fields.UID_KEY])
-                    except TypeError:
-                        # empty content
-                        pass
-        return deleted
diff --git a/src/leap/mail/imap/tests/__init__.py b/src/leap/mail/imap/tests/__init__.py
index f3d5ca6..5cf60ed 100644
--- a/src/leap/mail/imap/tests/__init__.py
+++ b/src/leap/mail/imap/tests/__init__.py
@@ -1,4 +1,4 @@
-#-*- encoding: utf-8 -*-
+# -*- encoding: utf-8 -*-
 """
 leap/email/imap/tests/__init__.py
 ----------------------------------
@@ -10,13 +10,6 @@ code, using twisted.trial, for testing leap_mx.
 @copyright: © 2013 Kali Kaneko, see COPYLEFT file
 """
 
-__all__ = ['test_imap']
-
-
-def run():
-    """xxx fill me in"""
-    pass
-
 import os
 import u1db
 
@@ -25,11 +18,18 @@ from leap.common.testing.basetest import BaseLeapTest
 from leap.soledad.client import Soledad
 from leap.soledad.common.document import SoledadDocument
 
+__all__ = ['test_imap']
+
 
-#-----------------------------------------------------------------------------
+def run():
+    """xxx fill me in"""
+    pass
+
+# -----------------------------------------------------------------------------
 # Some tests inherit from BaseSoledadTest in order to have a working Soledad
 # instance in each test.
-#-----------------------------------------------------------------------------
+# -----------------------------------------------------------------------------
+
 
 class BaseSoledadIMAPTest(BaseLeapTest):
     """
diff --git a/src/leap/mail/imap/tests/regressions b/src/leap/mail/imap/tests/regressions_mime_struct
index efe3f46..0332664 100755
--- a/src/leap/mail/imap/tests/regressions
+++ b/src/leap/mail/imap/tests/regressions_mime_struct
@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 
 # -*- coding: utf-8 -*-
-# regressions
+# regression_mime_struct
 # Copyright (C) 2014 LEAP
 # Copyright (c) Twisted Matrix Laboratories.
 #
@@ -18,7 +18,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
-Simple Regression Tests using IMAP4 client.
+Simple Regression Tests for checking MIME struct handling using IMAP4 client.
 
 Iterates trough all mails under a given folder and tries to APPEND them to
 the server being tested. After FETCHING the pushed message, it compares
@@ -40,7 +40,9 @@ from twisted.protocols import basic
 from twisted.python import log
 
 
-REGRESSIONS_FOLDER = "regressions_test"
+REGRESSIONS_FOLDER = os.environ.get(
+    "REGRESSIONS_FOLDER", "regressions_test")
+print "[+] Using regressions folder:", REGRESSIONS_FOLDER
 
 parser = Parser()
 
@@ -263,7 +265,7 @@ def cbSelectMbox(result, proto):
 
     if result["EXISTS"] != 0:
         # Flag as deleted, expunge, and do an examine again.
-        #print "There is mail here, will delete..."
+        print "There is mail here, will delete..."
         return cbDeleteAndExpungeTestFolder(proto)
 
     else:
@@ -276,11 +278,15 @@ def ebSelectMbox(failure, proto, folder):
 
     Creates the folder.
     """
-    print failure.getTraceback()
+    log.err(failure)
     log.msg("Folder %r does not exist. Creating..." % (folder,))
     return proto.create(folder).addCallback(cbAuthentication, proto)
 
 
+def ebExpunge(failure):
+    log.err(failure)
+
+
 def cbDeleteAndExpungeTestFolder(proto):
     """
     Callback invoked fom cbExamineMbox when the number of messages in the
@@ -292,7 +298,9 @@ def cbDeleteAndExpungeTestFolder(proto):
     ).addCallback(
         lambda r: proto.expunge()
     ).addCallback(
-        cbExpunge, proto)
+        cbExpunge, proto
+    ).addErrback(
+        ebExpunge)
 
 
 def cbExpunge(result, proto):
diff --git a/src/leap/mail/imap/tests/rfc822.message b/src/leap/mail/imap/tests/rfc822.message
index ee97ab9..b19cc28 100644..120000
--- a/src/leap/mail/imap/tests/rfc822.message
+++ b/src/leap/mail/imap/tests/rfc822.message
@@ -1,86 +1 @@
-Return-Path: <twisted-commits-admin@twistedmatrix.com>
-Delivered-To: exarkun@meson.dyndns.org
-Received: from localhost [127.0.0.1]
-	by localhost with POP3 (fetchmail-6.2.1)
-	for exarkun@localhost (single-drop); Thu, 20 Mar 2003 14:50:20 -0500 (EST)
-Received: from pyramid.twistedmatrix.com (adsl-64-123-27-105.dsl.austtx.swbell.net [64.123.27.105])
-	by intarweb.us (Postfix) with ESMTP id 4A4A513EA4
-	for <exarkun@meson.dyndns.org>; Thu, 20 Mar 2003 14:49:27 -0500 (EST)
-Received: from localhost ([127.0.0.1] helo=pyramid.twistedmatrix.com)
-	by pyramid.twistedmatrix.com with esmtp (Exim 3.35 #1 (Debian))
-	id 18w648-0007Vl-00; Thu, 20 Mar 2003 13:51:04 -0600
-Received: from acapnotic by pyramid.twistedmatrix.com with local (Exim 3.35 #1 (Debian))
-	id 18w63j-0007VK-00
-	for <twisted-commits@twistedmatrix.com>; Thu, 20 Mar 2003 13:50:39 -0600
-To: twisted-commits@twistedmatrix.com
-From: etrepum CVS <etrepum@twistedmatrix.com>
-Reply-To: twisted-python@twistedmatrix.com
-X-Mailer: CVSToys
-Message-Id: <E18w63j-0007VK-00@pyramid.twistedmatrix.com>
-Subject: [Twisted-commits] rebuild now works on python versions from 2.2.0 and up.
-Sender: twisted-commits-admin@twistedmatrix.com
-Errors-To: twisted-commits-admin@twistedmatrix.com
-X-BeenThere: twisted-commits@twistedmatrix.com
-X-Mailman-Version: 2.0.11
-Precedence: bulk
-List-Help: <mailto:twisted-commits-request@twistedmatrix.com?subject=help>
-List-Post: <mailto:twisted-commits@twistedmatrix.com>
-List-Subscribe: <http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-commits>,
-	<mailto:twisted-commits-request@twistedmatrix.com?subject=subscribe>
-List-Id: <twisted-commits.twistedmatrix.com>
-List-Unsubscribe: <http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-commits>,
-	<mailto:twisted-commits-request@twistedmatrix.com?subject=unsubscribe>
-List-Archive: <http://twistedmatrix.com/pipermail/twisted-commits/>
-Date: Thu, 20 Mar 2003 13:50:39 -0600
-
-Modified files:
-Twisted/twisted/python/rebuild.py 1.19 1.20
-
-Log message:
-rebuild now works on python versions from 2.2.0 and up.
-
-
-ViewCVS links:
-http://twistedmatrix.com/users/jh.twistd/viewcvs/cgi/viewcvs.cgi/twisted/python/rebuild.py.diff?r1=text&tr1=1.19&r2=text&tr2=1.20&cvsroot=Twisted
-
-Index: Twisted/twisted/python/rebuild.py
-diff -u Twisted/twisted/python/rebuild.py:1.19 Twisted/twisted/python/rebuild.py:1.20
---- Twisted/twisted/python/rebuild.py:1.19	Fri Jan 17 13:50:49 2003
-+++ Twisted/twisted/python/rebuild.py	Thu Mar 20 11:50:08 2003
-@@ -206,15 +206,27 @@
-             clazz.__dict__.clear()
-             clazz.__getattr__ = __getattr__
-             clazz.__module__ = module.__name__
-+    if newclasses:
-+        import gc
-+        if (2, 2, 0) <= sys.version_info[:3] < (2, 2, 2):
-+            hasBrokenRebuild = 1
-+            gc_objects = gc.get_objects()
-+        else:
-+            hasBrokenRebuild = 0
-     for nclass in newclasses:
-         ga = getattr(module, nclass.__name__)
-         if ga is nclass:
-             log.msg("WARNING: new-class %s not replaced by reload!" % reflect.qual(nclass))
-         else:
--            import gc
--            for r in gc.get_referrers(nclass):
--                if isinstance(r, nclass):
-+            if hasBrokenRebuild:
-+                for r in gc_objects:
-+                    if not getattr(r, '__class__', None) is nclass:
-+                        continue
-                     r.__class__ = ga
-+            else:
-+                for r in gc.get_referrers(nclass):
-+                    if getattr(r, '__class__', None) is nclass:
-+                        r.__class__ = ga
-     if doLog:
-         log.msg('')
-         log.msg('  (fixing   %s): ' % str(module.__name__))
-
-
-_______________________________________________
-Twisted-commits mailing list
-Twisted-commits@twistedmatrix.com
-http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-commits
+../../tests/rfc822.message
\ No newline at end of file
diff --git a/src/leap/mail/imap/tests/rfc822.multi-minimal.message b/src/leap/mail/imap/tests/rfc822.multi-minimal.message
index 582297c..e0aa678 100644..120000
--- a/src/leap/mail/imap/tests/rfc822.multi-minimal.message
+++ b/src/leap/mail/imap/tests/rfc822.multi-minimal.message
@@ -1,16 +1 @@
-Content-Type: multipart/mixed; boundary="===============6203542367371144092=="
-MIME-Version: 1.0
-Subject: [TEST] 010 - Inceptos cum lorem risus congue
-From: testmailbitmaskspam@gmail.com
-To: test_c5@dev.bitmask.net
-
---===============6203542367371144092==
-Content-Type: text/plain; charset="us-ascii"
-MIME-Version: 1.0
-Content-Transfer-Encoding: 7bit
-
-Howdy from python!
-The subject: [TEST] 010 - Inceptos cum lorem risus congue
-Current date & time: Wed Jan  8 16:36:21 2014
-Trying to attach: []
---===============6203542367371144092==--
+../../tests/rfc822.multi-minimal.message
\ No newline at end of file
diff --git a/src/leap/mail/imap/tests/rfc822.multi-nested.message b/src/leap/mail/imap/tests/rfc822.multi-nested.message
new file mode 120000
index 0000000..306d0de
--- /dev/null
+++ b/src/leap/mail/imap/tests/rfc822.multi-nested.message
@@ -0,0 +1 @@
+../../tests/rfc822.multi-nested.message
\ No newline at end of file
diff --git a/src/leap/mail/imap/tests/rfc822.multi-signed.message b/src/leap/mail/imap/tests/rfc822.multi-signed.message
index 9907c2d..4172244 100644..120000
--- a/src/leap/mail/imap/tests/rfc822.multi-signed.message
+++ b/src/leap/mail/imap/tests/rfc822.multi-signed.message
@@ -1,238 +1 @@
-Date: Mon, 6 Jan 2014 04:40:47 -0400
-From: Kali Kaneko <kali@leap.se>
-To: penguin@example.com
-Subject: signed message
-Message-ID: <20140106084047.GA21317@samsara.lan>
-MIME-Version: 1.0
-Content-Type: multipart/signed; micalg=pgp-sha1;
-	protocol="application/pgp-signature"; boundary="z9ECzHErBrwFF8sy"
-Content-Disposition: inline
-User-Agent: Mutt/1.5.21 (2012-12-30)
-
-
---z9ECzHErBrwFF8sy
-Content-Type: multipart/mixed; boundary="z0eOaCaDLjvTGF2l"
-Content-Disposition: inline
-
-
---z0eOaCaDLjvTGF2l
-Content-Type: text/plain; charset=utf-8
-Content-Disposition: inline
-Content-Transfer-Encoding: quoted-printable
-
-This is an example of a signed message,
-with attachments.
-
-
---=20
-Nihil sine chao! =E2=88=B4
-
---z0eOaCaDLjvTGF2l
-Content-Type: text/plain; charset=us-ascii
-Content-Disposition: attachment; filename="attach.txt"
-
-this is attachment in plain text.
-
---z0eOaCaDLjvTGF2l
-Content-Type: application/octet-stream
-Content-Disposition: attachment; filename="hack.ico"
-Content-Transfer-Encoding: base64
-
-AAABAAMAEBAAAAAAAABoBQAANgAAACAgAAAAAAAAqAgAAJ4FAABAQAAAAAAAACgWAABGDgAA
-KAAAABAAAAAgAAAAAQAIAAAAAABAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAD///8Ai4uLAEZG
-RgDDw8MAJCQkAGVlZQDh4eEApqamADQ0NADw8PAADw8PAFVVVQDT09MAtLS0AJmZmQAaGhoA
-PT09AMvLywAsLCwA+Pj4AAgICADp6ekA2traALy8vABeXl4An5+fAJOTkwAfHx8A9PT0AOXl
-5QA4ODgAuLi4ALCwsACPj48ABQUFAPv7+wDt7e0AJycnADExMQDe3t4A0NDQAL+/vwCcnJwA
-/f39ACkpKQDy8vIA6+vrADY2NgDn5+cAOjo6AOPj4wDc3NwASEhIANjY2ADV1dUAU1NTAMnJ
-yQC6uroApKSkAAEBAQAGBgYAICAgAP7+/gD6+voA+fn5AC0tLQD19fUA8/PzAPHx8QDv7+8A
-Pj4+AO7u7gDs7OwA6urqAOjo6ADk5OQAVFRUAODg4ADf398A3d3dANvb2wBfX18A2dnZAMrK
-ygDCwsIAu7u7ALm5uQC3t7cAs7OzAKWlpQCdnZ0AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABKRC5ESDRELi4uNEUhIhcK
-LgEBAUEeAQEBAUYCAAATNC4BPwEUMwE/PwFOQgAAACsuAQEBQUwBAQEBSk0AABVWSCwBP0RP
-QEFBFDNTUkdbLk4eOg0xEh5MTEw5RlEqLgdKTQAcGEYBAQEBJQ4QPBklWwAAAANKAT8/AUwy
-AAAAOxoAAAA1LwE/PwEeEQAAAFpJGT0mVUgBAQE/SVYFFQZIKEtVNjFUJR4eSTlIKARET0gs
-AT8dS1kJH1dINzgnGy5EAQEBASk+AAAtUAwAACNYLgE/AQEYFQAAC1UwAAAAW0QBAQEkMRkA
-AAZDGwAAME8WRC5EJU4lOwhIT0UgD08KAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACgAAAAgAAAAQAAAAAEACAAAAAAA
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-
---z0eOaCaDLjvTGF2l--
-
---z9ECzHErBrwFF8sy
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-
------BEGIN PGP SIGNATURE-----
-Version: GnuPG v1.4.15 (GNU/Linux)
-
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------END PGP SIGNATURE-----
-
---z9ECzHErBrwFF8sy--
+../../tests/rfc822.multi-signed.message
\ No newline at end of file
diff --git a/src/leap/mail/imap/tests/rfc822.multi.message b/src/leap/mail/imap/tests/rfc822.multi.message
index 30f74e5..62057d2 100644..120000
--- a/src/leap/mail/imap/tests/rfc822.multi.message
+++ b/src/leap/mail/imap/tests/rfc822.multi.message
@@ -1,96 +1 @@
-Date: Fri, 19 May 2000 09:55:48 -0400 (EDT)

-From: Doug Sauder <doug@penguin.example.com>

-To: Joe Blow <blow@example.com>

-Subject: Test message from PINE

-Message-ID: <Pine.LNX.4.21.0005190951410.8452-102000@penguin.example.com>

-MIME-Version: 1.0

-Content-Type: MULTIPART/MIXED; BOUNDARY="-1463757054-952513540-958744548=:8452"

-

-  This message is in MIME format.  The first part should be readable text,

-  while the remaining parts are likely unreadable without MIME-aware tools.

-  Send mail to mime@docserver.cac.washington.edu for more info.

-

----1463757054-952513540-958744548=:8452

-Content-Type: TEXT/PLAIN; charset=US-ASCII

-

-This is a test message from PINE MUA.

-

-

----1463757054-952513540-958744548=:8452

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-Content-Transfer-Encoding: BASE64

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-Content-Description: A PNG graphic file

-Content-Disposition: attachment; filename="redball.png"

-

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+../../tests/rfc822.multi.message
\ No newline at end of file
diff --git a/src/leap/mail/imap/tests/rfc822.plain.message b/src/leap/mail/imap/tests/rfc822.plain.message
index fc627c3..5bab0e8 100644..120000
--- a/src/leap/mail/imap/tests/rfc822.plain.message
+++ b/src/leap/mail/imap/tests/rfc822.plain.message
@@ -1,66 +1 @@
-From pyar-bounces@python.org.ar Wed Jan  8 14:46:02 2014
-Return-Path: <pyar-bounces@python.org.ar>
-X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on spamd2.riseup.net
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+../../tests/rfc822.plain.message
\ No newline at end of file
diff --git a/src/leap/mail/imap/tests/leap_tests_imap.zsh b/src/leap/mail/imap/tests/stress_tests_imap.zsh
index 544faca..544faca 100755
--- a/src/leap/mail/imap/tests/leap_tests_imap.zsh
+++ b/src/leap/mail/imap/tests/stress_tests_imap.zsh
diff --git a/src/leap/mail/imap/tests/test_imap.py b/src/leap/mail/imap/tests/test_imap.py
index 631a2c1..62c3c41 100644
--- a/src/leap/mail/imap/tests/test_imap.py
+++ b/src/leap/mail/imap/tests/test_imap.py
@@ -17,7 +17,7 @@
 """
 Test case for leap.email.imap.server
 TestCases taken from twisted tests and modified to make them work
-against SoledadBackedAccount.
+against our implementation of the IMAPAccount.
 
 @authors: Kali Kaneko, <kali@leap.se>
 XXX add authors from the original twisted tests.
@@ -25,31 +25,20 @@ XXX add authors from the original twisted tests.
 @license: GPLv3, see included LICENSE file
 """
 # XXX review license of the original tests!!!
-
-try:
-    from cStringIO import StringIO
-except ImportError:
-    from StringIO import StringIO
-
 import os
+import string
 import types
 
 
 from twisted.mail import imap4
 from twisted.internet import defer
-from twisted.trial import unittest
 from twisted.python import util
 from twisted.python import failure
 
 from twisted import cred
 
-
-# import u1db
-
-from leap.mail.imap.mailbox import SoledadMailbox
-from leap.mail.imap.memorystore import MemoryStore
-from leap.mail.imap.messages import MessageCollection
-from leap.mail.imap.server import LeapIMAPServer
+from leap.mail.imap.mailbox import IMAPMailbox
+from leap.mail.imap.messages import CaseInsensitiveDict
 from leap.mail.imap.tests.utils import IMAP4HelperMixin
 
 
@@ -73,7 +62,6 @@ def sortNest(l):
 
 
 class TestRealm:
-
     """
     A minimal auth realm for testing purposes only
     """
@@ -82,153 +70,21 @@ class TestRealm:
     def requestAvatar(self, avatarId, mind, *interfaces):
         return imap4.IAccount, self.theAccount, lambda: None
 
-
 #
 # TestCases
 #
 
-class MessageCollectionTestCase(IMAP4HelperMixin, unittest.TestCase):
-
-    """
-    Tests for the MessageCollection class
-    """
-    count = 0
-
-    def setUp(self):
-        """
-        setUp method for each test
-        We override mixin method since we are only testing
-        MessageCollection interface in this particular TestCase
-        """
-        super(MessageCollectionTestCase, self).setUp()
-        memstore = MemoryStore()
-        self.messages = MessageCollection("testmbox%s" % (self.count,),
-                                          self._soledad, memstore=memstore)
-        MessageCollectionTestCase.count += 1
-
-    def tearDown(self):
-        """
-        tearDown method for each test
-        """
-        del self.messages
-
-    def testEmptyMessage(self):
-        """
-        Test empty message and collection
-        """
-        em = self.messages._get_empty_doc()
-        self.assertEqual(
-            em,
-            {
-                "chash": '',
-                "deleted": False,
-                "flags": [],
-                "mbox": "inbox",
-                "seen": False,
-                "multi": False,
-                "size": 0,
-                "type": "flags",
-                "uid": 1,
-            })
-        self.assertEqual(self.messages.count(), 0)
-
-    def testMultipleAdd(self):
-        """
-        Add multiple messages
-        """
-        mc = self.messages
-        self.assertEqual(self.messages.count(), 0)
-
-        def add_first():
-            d = defer.gatherResults([
-                mc.add_msg('Stuff 1', subject="test1"),
-                mc.add_msg('Stuff 2', subject="test2"),
-                mc.add_msg('Stuff 3', subject="test3"),
-                mc.add_msg('Stuff 4', subject="test4")])
-            return d
-
-        def add_second(result):
-            d = defer.gatherResults([
-                mc.add_msg('Stuff 5', subject="test5"),
-                mc.add_msg('Stuff 6', subject="test6"),
-                mc.add_msg('Stuff 7', subject="test7")])
-            return d
-
-        def check_second(result):
-            return self.assertEqual(mc.count(), 7)
-
-        d1 = add_first()
-        d1.addCallback(add_second)
-        d1.addCallback(check_second)
-
-    def testRecentCount(self):
-        """
-        Test the recent count
-        """
-        mc = self.messages
-        countrecent = mc.count_recent
-        eq = self.assertEqual
-
-        self.assertEqual(countrecent(), 0)
-
-        d = mc.add_msg('Stuff', subject="test1")
-        # For the semantics defined in the RFC, we auto-add the
-        # recent flag by default.
-
-        def add2(_):
-            return mc.add_msg('Stuff', subject="test2",
-                              flags=('\\Deleted',))
-
-        def add3(_):
-            return mc.add_msg('Stuff', subject="test3",
-                              flags=('\\Recent',))
-
-        def add4(_):
-            return mc.add_msg('Stuff', subject="test4",
-                              flags=('\\Deleted', '\\Recent'))
-
-        d.addCallback(lambda r: eq(countrecent(), 1))
-        d.addCallback(add2)
-        d.addCallback(lambda r: eq(countrecent(), 2))
-        d.addCallback(add3)
-        d.addCallback(lambda r: eq(countrecent(), 3))
-        d.addCallback(add4)
-        d.addCallback(lambda r: eq(countrecent(), 4))
-
-    def testFilterByMailbox(self):
-        """
-        Test that queries filter by selected mailbox
-        """
-        mc = self.messages
-        self.assertEqual(self.messages.count(), 0)
-
-        def add_1():
-            d1 = mc.add_msg('msg 1', subject="test1")
-            d2 = mc.add_msg('msg 2', subject="test2")
-            d3 = mc.add_msg('msg 3', subject="test3")
-            d = defer.gatherResults([d1, d2, d3])
-            return d
-
-        add_1().addCallback(lambda ignored: self.assertEqual(
-                            mc.count(), 3))
-
-        # XXX this has to be redone to fit memstore ------------#
-        #newmsg = mc._get_empty_doc()
-        #newmsg['mailbox'] = "mailbox/foo"
-        #mc._soledad.create_doc(newmsg)
-        #self.assertEqual(mc.count(), 3)
-        #self.assertEqual(
-            #len(mc._soledad.get_from_index(mc.TYPE_IDX, "flags")), 4)
+# DEBUG ---
+# from twisted.internet.base import DelayedCall
+# DelayedCall.debug = True
 
 
-class LeapIMAP4ServerTestCase(IMAP4HelperMixin, unittest.TestCase):
-    # TODO this currently will use a memory-only store.
-    # create a different one for testing soledad sync.
+class LEAPIMAP4ServerTestCase(IMAP4HelperMixin):
 
     """
-    Tests for the generic behavior of the LeapIMAP4Server
+    Tests for the generic behavior of the LEAPIMAP4Server
     which, right now, it's just implemented in this test file as
-    LeapIMAPServer. We will move the implementation, together with
+    LEAPIMAPServer. We will move the implementation, together with
     authentication bits, to leap.mail.imap.server so it can be instantiated
     from the tac file.
 
@@ -248,6 +104,7 @@ class LeapIMAP4ServerTestCase(IMAP4HelperMixin, unittest.TestCase):
         """
         succeed = ('testbox', 'test/box', 'test/', 'test/box/box', 'foobox')
         fail = ('testbox', 'test/box')
+        acc = self.server.theAccount
 
         def cb():
             self.result.append(1)
@@ -259,46 +116,54 @@ class LeapIMAP4ServerTestCase(IMAP4HelperMixin, unittest.TestCase):
             return self.client.login(TEST_USER, TEST_PASSWD)
 
         def create():
+            create_deferreds = []
             for name in succeed + fail:
                 d = self.client.create(name)
                 d.addCallback(strip(cb)).addErrback(eb)
-            d.addCallbacks(self._cbStopClient, self._ebGeneral)
+                create_deferreds.append(d)
+            dd = defer.gatherResults(create_deferreds)
+            dd.addCallbacks(self._cbStopClient, self._ebGeneral)
+            return dd
 
         self.result = []
-        d1 = self.connected.addCallback(strip(login)).addCallback(
-            strip(create))
+        d1 = self.connected.addCallback(strip(login))
+        d1.addCallback(strip(create))
         d2 = self.loopback()
-        d = defer.gatherResults([d1, d2])
+        d = defer.gatherResults([d1, d2], consumeErrors=True)
+        d.addCallback(lambda _: acc.account.list_all_mailbox_names())
         return d.addCallback(self._cbTestCreate, succeed, fail)
 
-    def _cbTestCreate(self, ignored, succeed, fail):
+    def _cbTestCreate(self, mailboxes, succeed, fail):
         self.assertEqual(self.result, [1] * len(succeed) + [0] * len(fail))
 
-        mboxes = list(LeapIMAPServer.theAccount.mailboxes)
-        answers = ([u'INBOX', u'foobox', 'test', u'test/box',
-                    u'test/box/box', 'testbox'])
-        self.assertEqual(mboxes, [a for a in answers])
+        answers = ([u'INBOX', u'testbox', u'test/box', u'test',
+                    u'test/box/box', 'foobox'])
+        self.assertEqual(sorted(mailboxes), sorted([a for a in answers]))
 
     def testDelete(self):
         """
         Test whether we can delete mailboxes
         """
-        LeapIMAPServer.theAccount.addMailbox('delete/me')
+        def add_mailbox():
+            return self.server.theAccount.addMailbox('test-delete/me')
 
         def login():
             return self.client.login(TEST_USER, TEST_PASSWD)
 
         def delete():
-            return self.client.delete('delete/me')
+            return self.client.delete('test-delete/me')
 
-        d1 = self.connected.addCallback(strip(login))
+        acc = self.server.theAccount.account
+
+        d1 = self.connected.addCallback(add_mailbox)
+        d1.addCallback(strip(login))
         d1.addCallbacks(strip(delete), self._ebGeneral)
         d1.addCallbacks(self._cbStopClient, self._ebGeneral)
         d2 = self.loopback()
         d = defer.gatherResults([d1, d2])
-        d.addCallback(
-            lambda _: self.assertEqual(
-                LeapIMAPServer.theAccount.mailboxes, ['INBOX']))
+        d.addCallback(lambda _: acc.list_all_mailbox_names())
+        d.addCallback(lambda mboxes: self.assertEqual(
+            mboxes, ['INBOX']))
         return d
 
     def testIllegalInboxDelete(self):
@@ -357,24 +222,34 @@ class LeapIMAP4ServerTestCase(IMAP4HelperMixin, unittest.TestCase):
         Try deleting a mailbox with sub-folders, and \NoSelect flag set.
         An exception is expected.
         """
-        LeapIMAPServer.theAccount.addMailbox('delete')
-        to_delete = LeapIMAPServer.theAccount.getMailbox('delete')
-        to_delete.setFlags((r'\Noselect',))
-        to_delete.getFlags()
-        LeapIMAPServer.theAccount.addMailbox('delete/me')
+        acc = self.server.theAccount
 
         def login():
             return self.client.login(TEST_USER, TEST_PASSWD)
 
-        def delete():
+        def create_mailboxes():
+            d1 = acc.addMailbox('delete')
+            d2 = acc.addMailbox('delete/me')
+            d = defer.gatherResults([d1, d2])
+            return d
+
+        def get_noselect_mailbox(mboxes):
+            mbox = mboxes[0]
+            return mbox.setFlags((r'\Noselect',))
+
+        def delete_mbox(ignored):
             return self.client.delete('delete')
 
         def deleteFailed(failure):
             self.failure = failure
 
         self.failure = None
+
         d1 = self.connected.addCallback(strip(login))
-        d1.addCallback(strip(delete)).addErrback(deleteFailed)
+        d1.addCallback(strip(create_mailboxes))
+        d1.addCallback(get_noselect_mailbox)
+
+        d1.addCallback(delete_mbox).addErrback(deleteFailed)
         d1.addCallbacks(self._cbStopClient, self._ebGeneral)
         d2 = self.loopback()
         d = defer.gatherResults([d1, d2])
@@ -386,11 +261,15 @@ class LeapIMAP4ServerTestCase(IMAP4HelperMixin, unittest.TestCase):
                       self.assertEqual(str(self.failure.value), expected))
         return d
 
+    # FIXME --- this test sometimes FAILS (timing issue).
+    # Some of the deferreds used in the rename op is not waiting for the
+    # operations properly
     def testRename(self):
         """
         Test whether we can rename a mailbox
         """
-        LeapIMAPServer.theAccount.addMailbox('oldmbox')
+        def create_mbox():
+            return self.server.theAccount.addMailbox('oldmbox')
 
         def login():
             return self.client.login(TEST_USER, TEST_PASSWD)
@@ -398,15 +277,16 @@ class LeapIMAP4ServerTestCase(IMAP4HelperMixin, unittest.TestCase):
         def rename():
             return self.client.rename('oldmbox', 'newname')
 
-        d1 = self.connected.addCallback(strip(login))
+        d1 = self.connected.addCallback(strip(create_mbox))
+        d1.addCallback(strip(login))
         d1.addCallbacks(strip(rename), self._ebGeneral)
         d1.addCallbacks(self._cbStopClient, self._ebGeneral)
         d2 = self.loopback()
         d = defer.gatherResults([d1, d2])
         d.addCallback(lambda _:
-                      self.assertEqual(
-                          LeapIMAPServer.theAccount.mailboxes,
-                          ['INBOX', 'newname']))
+                      self.server.theAccount.account.list_all_mailbox_names())
+        d.addCallback(lambda mboxes:
+                      self.assertItemsEqual(mboxes, ['INBOX', 'newname']))
         return d
 
     def testIllegalInboxRename(self):
@@ -440,8 +320,12 @@ class LeapIMAP4ServerTestCase(IMAP4HelperMixin, unittest.TestCase):
         """
         Try to rename hierarchical mailboxes
         """
-        LeapIMAPServer.theAccount.create('oldmbox/m1')
-        LeapIMAPServer.theAccount.create('oldmbox/m2')
+        acc = self.server.theAccount
+
+        def add_mailboxes():
+            return defer.gatherResults([
+                acc.addMailbox('oldmbox/m1'),
+                acc.addMailbox('oldmbox/m2')])
 
         def login():
             return self.client.login(TEST_USER, TEST_PASSWD)
@@ -449,45 +333,65 @@ class LeapIMAP4ServerTestCase(IMAP4HelperMixin, unittest.TestCase):
         def rename():
             return self.client.rename('oldmbox', 'newname')
 
-        d1 = self.connected.addCallback(strip(login))
+        d1 = self.connected.addCallback(strip(add_mailboxes))
+        d1.addCallback(strip(login))
         d1.addCallbacks(strip(rename), self._ebGeneral)
         d1.addCallbacks(self._cbStopClient, self._ebGeneral)
         d2 = self.loopback()
         d = defer.gatherResults([d1, d2])
+        d.addCallback(lambda _: acc.account.list_all_mailbox_names())
         return d.addCallback(self._cbTestHierarchicalRename)
 
-    def _cbTestHierarchicalRename(self, ignored):
-        mboxes = LeapIMAPServer.theAccount.mailboxes
-        expected = ['INBOX', 'newname', 'newname/m1', 'newname/m2']
-        self.assertEqual(mboxes, [s for s in expected])
+    def _cbTestHierarchicalRename(self, mailboxes):
+        expected = ['INBOX', 'newname/m1', 'newname/m2']
+        self.assertEqual(sorted(mailboxes), sorted([s for s in expected]))
 
     def testSubscribe(self):
         """
         Test whether we can mark a mailbox as subscribed to
         """
+        acc = self.server.theAccount
+
+        def add_mailbox():
+            return acc.addMailbox('this/mbox')
+
         def login():
             return self.client.login(TEST_USER, TEST_PASSWD)
 
         def subscribe():
             return self.client.subscribe('this/mbox')
 
-        d1 = self.connected.addCallback(strip(login))
+        def get_subscriptions(ignored):
+            return self.server.theAccount.getSubscriptions()
+
+        d1 = self.connected.addCallback(strip(add_mailbox))
+        d1.addCallback(strip(login))
         d1.addCallbacks(strip(subscribe), self._ebGeneral)
         d1.addCallbacks(self._cbStopClient, self._ebGeneral)
         d2 = self.loopback()
         d = defer.gatherResults([d1, d2])
-        d.addCallback(lambda _:
-                      self.assertEqual(
-                          LeapIMAPServer.theAccount.subscriptions,
-                          ['this/mbox']))
+        d.addCallback(get_subscriptions)
+        d.addCallback(lambda subscriptions:
+                      self.assertEqual(subscriptions,
+                                       ['this/mbox']))
         return d
 
     def testUnsubscribe(self):
         """
         Test whether we can unsubscribe from a set of mailboxes
         """
-        LeapIMAPServer.theAccount.subscribe('this/mbox')
-        LeapIMAPServer.theAccount.subscribe('that/mbox')
+        acc = self.server.theAccount
+
+        def add_mailboxes():
+            return defer.gatherResults([
+                acc.addMailbox('this/mbox'),
+                acc.addMailbox('that/mbox')])
+
+        def dc1():
+            return acc.subscribe('this/mbox')
+
+        def dc2():
+            return acc.subscribe('that/mbox')
 
         def login():
             return self.client.login(TEST_USER, TEST_PASSWD)
@@ -495,24 +399,35 @@ class LeapIMAP4ServerTestCase(IMAP4HelperMixin, unittest.TestCase):
         def unsubscribe():
             return self.client.unsubscribe('this/mbox')
 
-        d1 = self.connected.addCallback(strip(login))
+        def get_subscriptions(ignored):
+            return acc.getSubscriptions()
+
+        d1 = self.connected.addCallback(strip(add_mailboxes))
+        d1.addCallback(strip(login))
+        d1.addCallback(strip(dc1))
+        d1.addCallback(strip(dc2))
         d1.addCallbacks(strip(unsubscribe), self._ebGeneral)
         d1.addCallbacks(self._cbStopClient, self._ebGeneral)
         d2 = self.loopback()
         d = defer.gatherResults([d1, d2])
-        d.addCallback(lambda _:
-                      self.assertEqual(
-                          LeapIMAPServer.theAccount.subscriptions,
-                          ['that/mbox']))
+        d.addCallback(get_subscriptions)
+        d.addCallback(lambda subscriptions:
+                      self.assertEqual(subscriptions,
+                                       ['that/mbox']))
         return d
 
     def testSelect(self):
         """
         Try to select a mailbox
         """
-        self.server.theAccount.addMailbox('TESTMAILBOX-SELECT', creation_ts=42)
+        mbox_name = "TESTMAILBOXSELECT"
         self.selectedArgs = None
 
+        acc = self.server.theAccount
+
+        def add_mailbox():
+            return acc.addMailbox(mbox_name, creation_ts=42)
+
         def login():
             return self.client.login(TEST_USER, TEST_PASSWD)
 
@@ -520,29 +435,26 @@ class LeapIMAP4ServerTestCase(IMAP4HelperMixin, unittest.TestCase):
             def selected(args):
                 self.selectedArgs = args
                 self._cbStopClient(None)
-            d = self.client.select('TESTMAILBOX-SELECT')
+            d = self.client.select(mbox_name)
             d.addCallback(selected)
             return d
 
-        d1 = self.connected.addCallback(strip(login))
+        d1 = self.connected.addCallback(strip(add_mailbox))
+        d1.addCallback(strip(login))
         d1.addCallback(strip(select))
-        d1.addErrback(self._ebGeneral)
+        # d1.addErrback(self._ebGeneral)
 
         d2 = self.loopback()
-        return defer.gatherResults([d1, d2]).addCallback(self._cbTestSelect)
+
+        d = defer.gatherResults([d1, d2])
+        d.addCallback(self._cbTestSelect)
+        return d
 
     def _cbTestSelect(self, ignored):
-        mbox = LeapIMAPServer.theAccount.getMailbox('TESTMAILBOX-SELECT')
-        self.assertEqual(self.server.mbox.messages.mbox, mbox.messages.mbox)
-        # XXX UIDVALIDITY should be "42" if the creation_ts is passed along
-        # to the memory store. However, the current state of the account
-        # implementation is incomplete and we're writing to soledad store
-        # directly there. We should handle the UIDVALIDITY timestamping
-        # mechanism in a separate test suite.
+        self.assertTrue(self.selectedArgs is not None)
 
         self.assertEqual(self.selectedArgs, {
-            'EXISTS': 0, 'RECENT': 0, 'UIDVALIDITY': 0,
-            # 'EXISTS': 0, 'RECENT': 0, 'UIDVALIDITY': 42,
+            'EXISTS': 0, 'RECENT': 0, 'UIDVALIDITY': 42,
             'FLAGS': ('\\Seen', '\\Answered', '\\Flagged',
                       '\\Deleted', '\\Draft', '\\Recent', 'List'),
             'READ-WRITE': True
@@ -560,13 +472,16 @@ class LeapIMAP4ServerTestCase(IMAP4HelperMixin, unittest.TestCase):
                 caps.update(c)
                 self.server.transport.loseConnection()
             return self.client.getCapabilities().addCallback(gotCaps)
-        d1 = self.connected.addCallback(
+
+        d1 = self.connected
+        d1.addCallback(
             strip(getCaps)).addErrback(self._ebGeneral)
+
         d = defer.gatherResults([self.loopback(), d1])
         expected = {'IMAP4rev1': None, 'NAMESPACE': None, 'LITERAL+': None,
                     'IDLE': None}
-
-        return d.addCallback(lambda _: self.assertEqual(expected, caps))
+        d.addCallback(lambda _: self.assertEqual(expected, caps))
+        return d
 
     def testCapabilityWithAuth(self):
         caps = {}
@@ -587,7 +502,8 @@ class LeapIMAP4ServerTestCase(IMAP4HelperMixin, unittest.TestCase):
                   'IDLE': None, 'LITERAL+': None,
                   'AUTH': ['CRAM-MD5']}
 
-        return d.addCallback(lambda _: self.assertEqual(expCap, caps))
+        d.addCallback(lambda _: self.assertEqual(expCap, caps))
+        return d
 
     #
     # authentication
@@ -635,7 +551,6 @@ class LeapIMAP4ServerTestCase(IMAP4HelperMixin, unittest.TestCase):
         return d.addCallback(self._cbTestLogin)
 
     def _cbTestLogin(self, ignored):
-        self.assertEqual(self.server.account, LeapIMAPServer.theAccount)
         self.assertEqual(self.server.state, 'auth')
 
     def testFailedLogin(self):
@@ -673,7 +588,6 @@ class LeapIMAP4ServerTestCase(IMAP4HelperMixin, unittest.TestCase):
         return d.addCallback(self._cbTestLoginRequiringQuoting)
 
     def _cbTestLoginRequiringQuoting(self, ignored):
-        self.assertEqual(self.server.account, LeapIMAPServer.theAccount)
         self.assertEqual(self.server.state, 'auth')
 
     #
@@ -720,11 +634,13 @@ class LeapIMAP4ServerTestCase(IMAP4HelperMixin, unittest.TestCase):
         for details.
         """
         # TODO implement the IMAP4ClientExamineTests testcase.
-
-        self.server.theAccount.addMailbox('test-mailbox-e',
-                                          creation_ts=42)
+        mbox_name = "test_mailbox_e"
+        acc = self.server.theAccount
         self.examinedArgs = None
 
+        def add_mailbox():
+            return acc.addMailbox(mbox_name, creation_ts=42)
+
         def login():
             return self.client.login(TEST_USER, TEST_PASSWD)
 
@@ -732,11 +648,12 @@ class LeapIMAP4ServerTestCase(IMAP4HelperMixin, unittest.TestCase):
             def examined(args):
                 self.examinedArgs = args
                 self._cbStopClient(None)
-            d = self.client.examine('test-mailbox-e')
+            d = self.client.examine(mbox_name)
             d.addCallback(examined)
             return d
 
-        d1 = self.connected.addCallback(strip(login))
+        d1 = self.connected.addCallback(strip(add_mailbox))
+        d1.addCallback(strip(login))
         d1.addCallback(strip(examine))
         d1.addErrback(self._ebGeneral)
         d2 = self.loopback()
@@ -744,28 +661,24 @@ class LeapIMAP4ServerTestCase(IMAP4HelperMixin, unittest.TestCase):
         return d.addCallback(self._cbTestExamine)
 
     def _cbTestExamine(self, ignored):
-        mbox = self.server.theAccount.getMailbox('test-mailbox-e')
-        self.assertEqual(self.server.mbox.messages.mbox, mbox.messages.mbox)
-
-        # XXX UIDVALIDITY should be "42" if the creation_ts is passed along
-        # to the memory store. However, the current state of the account
-        # implementation is incomplete and we're writing to soledad store
-        # directly there. We should handle the UIDVALIDITY timestamping
-        # mechanism in a separate test suite.
         self.assertEqual(self.examinedArgs, {
-            'EXISTS': 0, 'RECENT': 0, 'UIDVALIDITY': 0,
-            # 'EXISTS': 0, 'RECENT': 0, 'UIDVALIDITY': 42,
+            'EXISTS': 0, 'RECENT': 0, 'UIDVALIDITY': 42,
             'FLAGS': ('\\Seen', '\\Answered', '\\Flagged',
                       '\\Deleted', '\\Draft', '\\Recent', 'List'),
             'READ-WRITE': False})
 
-    def _listSetup(self, f):
-        LeapIMAPServer.theAccount.addMailbox('root/subthingl',
-                                             creation_ts=42)
-        LeapIMAPServer.theAccount.addMailbox('root/another-thing',
-                                             creation_ts=42)
-        LeapIMAPServer.theAccount.addMailbox('non-root/subthing',
-                                             creation_ts=42)
+    def _listSetup(self, f, f2=None):
+
+        acc = self.server.theAccount
+
+        def dc1():
+            return acc.addMailbox('root_subthing', creation_ts=42)
+
+        def dc2():
+            return acc.addMailbox('root_another_thing', creation_ts=42)
+
+        def dc3():
+            return acc.addMailbox('non_root_subthing', creation_ts=42)
 
         def login():
             return self.client.login(TEST_USER, TEST_PASSWD)
@@ -775,6 +688,13 @@ class LeapIMAP4ServerTestCase(IMAP4HelperMixin, unittest.TestCase):
 
         self.listed = None
         d1 = self.connected.addCallback(strip(login))
+        d1.addCallback(strip(dc1))
+        d1.addCallback(strip(dc2))
+        d1.addCallback(strip(dc3))
+
+        if f2 is not None:
+            d1.addCallback(f2)
+
         d1.addCallbacks(strip(f), self._ebGeneral)
         d1.addCallbacks(listed, self._ebGeneral)
         d1.addCallbacks(self._cbStopClient, self._ebGeneral)
@@ -787,12 +707,13 @@ class LeapIMAP4ServerTestCase(IMAP4HelperMixin, unittest.TestCase):
         """
         def list():
             return self.client.list('root', '%')
+
         d = self._listSetup(list)
         d.addCallback(lambda listed: self.assertEqual(
             sortNest(listed),
             sortNest([
-                (SoledadMailbox.INIT_FLAGS, "/", "root/subthingl"),
-                (SoledadMailbox.INIT_FLAGS, "/", "root/another-thing")
+                (IMAPMailbox.init_flags, "/", "root_subthing"),
+                (IMAPMailbox.init_flags, "/", "root_another_thing")
             ])
         ))
         return d
@@ -801,20 +722,29 @@ class LeapIMAP4ServerTestCase(IMAP4HelperMixin, unittest.TestCase):
         """
         Test LSub command
         """
-        LeapIMAPServer.theAccount.subscribe('root/subthingl2')
+        acc = self.server.theAccount
+
+        def subs_mailbox():
+            # why not client.subscribe instead?
+            return acc.subscribe('root_subthing')
 
         def lsub():
             return self.client.lsub('root', '%')
-        d = self._listSetup(lsub)
+
+        d = self._listSetup(lsub, strip(subs_mailbox))
         d.addCallback(self.assertEqual,
-                      [(SoledadMailbox.INIT_FLAGS, "/", "root/subthingl2")])
+                      [(IMAPMailbox.init_flags, "/", "root_subthing")])
         return d
 
     def testStatus(self):
         """
         Test Status command
         """
-        LeapIMAPServer.theAccount.addMailbox('root/subthings')
+        acc = self.server.theAccount
+
+        def add_mailbox():
+            return acc.addMailbox('root_subthings')
+
         # XXX FIXME ---- should populate this a little bit,
         # with unseen etc...
 
@@ -823,13 +753,15 @@ class LeapIMAP4ServerTestCase(IMAP4HelperMixin, unittest.TestCase):
 
         def status():
             return self.client.status(
-                'root/subthings', 'MESSAGES', 'UIDNEXT', 'UNSEEN')
+                'root_subthings', 'MESSAGES', 'UIDNEXT', 'UNSEEN')
 
         def statused(result):
             self.statused = result
 
         self.statused = None
-        d1 = self.connected.addCallback(strip(login))
+
+        d1 = self.connected.addCallback(strip(add_mailbox))
+        d1.addCallback(strip(login))
         d1.addCallbacks(strip(status), self._ebGeneral)
         d1.addCallbacks(statused, self._ebGeneral)
         d1.addCallbacks(self._cbStopClient, self._ebGeneral)
@@ -886,56 +818,86 @@ class LeapIMAP4ServerTestCase(IMAP4HelperMixin, unittest.TestCase):
         """
         infile = util.sibpath(__file__, 'rfc822.message')
         message = open(infile)
-        LeapIMAPServer.theAccount.addMailbox('root/subthing')
+        acc = self.server.theAccount
+        mailbox_name = "appendmbox/subthing"
+
+        def add_mailbox():
+            return acc.addMailbox(mailbox_name)
 
         def login():
             return self.client.login(TEST_USER, TEST_PASSWD)
 
         def append():
             return self.client.append(
-                'root/subthing',
-                message,
+                mailbox_name, message,
                 ('\\SEEN', '\\DELETED'),
                 'Tue, 17 Jun 2003 11:22:16 -0600 (MDT)',
             )
 
-        d1 = self.connected.addCallback(strip(login))
+        d1 = self.connected.addCallback(strip(add_mailbox))
+        d1.addCallback(strip(login))
         d1.addCallbacks(strip(append), self._ebGeneral)
         d1.addCallbacks(self._cbStopClient, self._ebGeneral)
         d2 = self.loopback()
         d = defer.gatherResults([d1, d2])
+
+        d.addCallback(lambda _: acc.getMailbox(mailbox_name))
+        d.addCallback(lambda mb: mb.fetch(imap4.MessageSet(start=1), True))
         return d.addCallback(self._cbTestFullAppend, infile)
 
-    def _cbTestFullAppend(self, ignored, infile):
-        mb = LeapIMAPServer.theAccount.getMailbox('root/subthing')
-        self.assertEqual(1, len(mb.messages))
+    def _cbTestFullAppend(self, fetched, infile):
+        fetched = list(fetched)
+        self.assertTrue(len(fetched) == 1)
+        self.assertTrue(len(fetched[0]) == 2)
+        uid, msg = fetched[0]
+        parsed = self.parser.parse(open(infile))
+        expected_body = parsed.get_payload()
+        expected_headers = CaseInsensitiveDict(parsed.items())
 
-        msg = mb.messages.get_msg_by_uid(1)
-        self.assertEqual(
-            set(('\\Recent', '\\SEEN', '\\DELETED')),
-            set(msg.getFlags()))
+        def assert_flags(flags):
+            self.assertEqual(
+                set(('\\SEEN', '\\DELETED')),
+                set(flags))
 
-        self.assertEqual(
-            'Tue, 17 Jun 2003 11:22:16 -0600 (MDT)',
-            msg.getInternalDate())
+        def assert_date(date):
+            self.assertEqual(
+                'Tue, 17 Jun 2003 11:22:16 -0600 (MDT)',
+                date)
 
-        parsed = self.parser.parse(open(infile))
-        body = parsed.get_payload()
-        headers = dict(parsed.items())
-        self.assertEqual(
-            body,
-            msg.getBodyFile().read())
-        gotheaders = msg.getHeaders(True)
+        def assert_body(body):
+            gotbody = body.read()
+            self.assertEqual(expected_body, gotbody)
+
+        def assert_headers(headers):
+            self.assertItemsEqual(map(string.lower, expected_headers), headers)
+
+        d = defer.maybeDeferred(msg.getFlags)
+        d.addCallback(assert_flags)
 
-        self.assertItemsEqual(
-            headers, gotheaders)
+        d.addCallback(lambda _: defer.maybeDeferred(msg.getInternalDate))
+        d.addCallback(assert_date)
+
+        d.addCallback(
+            lambda _: defer.maybeDeferred(
+                msg.getBodyFile, self._soledad))
+        d.addCallback(assert_body)
+
+        d.addCallback(lambda _: defer.maybeDeferred(msg.getHeaders, True))
+        d.addCallback(assert_headers)
+
+        return d
 
     def testPartialAppend(self):
         """
         Test partially appending a message to the mailbox
         """
+        # TODO this test sometimes will fail because of the notify_just_mdoc
         infile = util.sibpath(__file__, 'rfc822.message')
-        LeapIMAPServer.theAccount.addMailbox('PARTIAL/SUBTHING')
+
+        acc = self.server.theAccount
+
+        def add_mailbox():
+            return acc.addMailbox('PARTIAL/SUBTHING')
 
         def login():
             return self.client.login(TEST_USER, TEST_PASSWD)
@@ -950,33 +912,47 @@ class LeapIMAP4ServerTestCase(IMAP4HelperMixin, unittest.TestCase):
                     (), self.client._IMAP4Client__cbContinueAppend, message
                 )
             )
-        d1 = self.connected.addCallback(strip(login))
+        d1 = self.connected.addCallback(strip(add_mailbox))
+        d1.addCallback(strip(login))
         d1.addCallbacks(strip(append), self._ebGeneral)
         d1.addCallbacks(self._cbStopClient, self._ebGeneral)
         d2 = self.loopback()
         d = defer.gatherResults([d1, d2])
+
+        d.addCallback(lambda _: acc.getMailbox("PARTIAL/SUBTHING"))
+        d.addCallback(lambda mb: mb.fetch(imap4.MessageSet(start=1), True))
         return d.addCallback(
             self._cbTestPartialAppend, infile)
 
-    def _cbTestPartialAppend(self, ignored, infile):
-        mb = LeapIMAPServer.theAccount.getMailbox('PARTIAL/SUBTHING')
-        self.assertEqual(1, len(mb.messages))
-        msg = mb.messages.get_msg_by_uid(1)
-        self.assertEqual(
-            set(('\\SEEN', '\\Recent')),
-            set(msg.getFlags())
-        )
+    def _cbTestPartialAppend(self, fetched, infile):
+        fetched = list(fetched)
+        self.assertTrue(len(fetched) == 1)
+        self.assertTrue(len(fetched[0]) == 2)
+        uid, msg = fetched[0]
         parsed = self.parser.parse(open(infile))
-        body = parsed.get_payload()
-        self.assertEqual(
-            body,
-            msg.getBodyFile().read())
+        expected_body = parsed.get_payload()
+
+        def assert_flags(flags):
+            self.assertEqual(
+                set((['\\SEEN'])), set(flags))
+
+        def assert_body(body):
+            gotbody = body.read()
+            self.assertEqual(expected_body, gotbody)
+
+        d = defer.maybeDeferred(msg.getFlags)
+        d.addCallback(assert_flags)
+
+        d.addCallback(lambda _: defer.maybeDeferred(msg.getBodyFile))
+        d.addCallback(assert_body)
+        return d
 
     def testCheck(self):
         """
         Test check command
         """
-        LeapIMAPServer.theAccount.addMailbox('root/subthing')
+        def add_mailbox():
+            return self.server.theAccount.addMailbox('root/subthing')
 
         def login():
             return self.client.login(TEST_USER, TEST_PASSWD)
@@ -987,89 +963,51 @@ class LeapIMAP4ServerTestCase(IMAP4HelperMixin, unittest.TestCase):
         def check():
             return self.client.check()
 
-        d = self.connected.addCallback(strip(login))
+        d = self.connected.addCallbacks(
+            strip(add_mailbox), self._ebGeneral)
+        d.addCallbacks(lambda _: login(), self._ebGeneral)
         d.addCallbacks(strip(select), self._ebGeneral)
         d.addCallbacks(strip(check), self._ebGeneral)
         d.addCallbacks(self._cbStopClient, self._ebGeneral)
-        return self.loopback()
-
-        # Okay, that was fun
-
-    def testClose(self):
-        """
-        Test closing the mailbox. We expect to get deleted all messages flagged
-        as such.
-        """
-        name = 'mailbox-close'
-        self.server.theAccount.addMailbox(name)
-
-        m = LeapIMAPServer.theAccount.getMailbox(name)
-
-        def login():
-            return self.client.login(TEST_USER, TEST_PASSWD)
-
-        def select():
-            return self.client.select(name)
-
-        def add_messages():
-            d1 = m.messages.add_msg(
-                'test 1', subject="Message 1",
-                flags=('\\Deleted', 'AnotherFlag'))
-            d2 = m.messages.add_msg(
-                'test 2', subject="Message 2",
-                flags=('AnotherFlag',))
-            d3 = m.messages.add_msg(
-                'test 3', subject="Message 3",
-                flags=('\\Deleted',))
-            d = defer.gatherResults([d1, d2, d3])
-            return d
-
-        def close():
-            return self.client.close()
-
-        d = self.connected.addCallback(strip(login))
-        d.addCallbacks(strip(select), self._ebGeneral)
-        d.addCallbacks(strip(add_messages), self._ebGeneral)
-        d.addCallbacks(strip(close), self._ebGeneral)
-        d.addCallbacks(self._cbStopClient, self._ebGeneral)
         d2 = self.loopback()
-        return defer.gatherResults([d, d2]).addCallback(self._cbTestClose, m)
-
-    def _cbTestClose(self, ignored, m):
-        self.assertEqual(len(m.messages), 1)
-        msg = m.messages.get_msg_by_uid(2)
-        self.assertTrue(msg is not None)
+        return defer.gatherResults([d, d2])
 
-        self.assertEqual(
-            dict(msg.hdoc.content)['subject'],
-            'Message 2')
-        self.failUnless(m.closed)
+        # Okay, that was much fun indeed
 
     def testExpunge(self):
         """
         Test expunge command
         """
-        name = 'mailbox-expunge'
-        self.server.theAccount.addMailbox(name)
-        m = LeapIMAPServer.theAccount.getMailbox(name)
+        acc = self.server.theAccount
+        mailbox_name = 'mailboxexpunge'
+
+        def add_mailbox():
+            return acc.addMailbox(mailbox_name)
 
         def login():
             return self.client.login(TEST_USER, TEST_PASSWD)
 
         def select():
-            return self.client.select('mailbox-expunge')
+            return self.client.select(mailbox_name)
+
+        def save_mailbox(mailbox):
+            self.mailbox = mailbox
+
+        def get_mailbox():
+            d = acc.getMailbox(mailbox_name)
+            d.addCallback(save_mailbox)
+            return d
 
         def add_messages():
-            d1 = m.messages.add_msg(
-                'test 1', subject="Message 1",
-                flags=('\\Deleted', 'AnotherFlag'))
-            d2 = m.messages.add_msg(
-                'test 2', subject="Message 2",
-                flags=('AnotherFlag',))
-            d3 = m.messages.add_msg(
-                'test 3', subject="Message 3",
-                flags=('\\Deleted',))
-            d = defer.gatherResults([d1, d2, d3])
+            d = self.mailbox.addMessage(
+                'test 1', flags=('\\Deleted', 'AnotherFlag'),
+                notify_just_mdoc=False)
+            d.addCallback(lambda _: self.mailbox.addMessage(
+                'test 2', flags=('AnotherFlag',),
+                notify_just_mdoc=False))
+            d.addCallback(lambda _: self.mailbox.addMessage(
+                'test 3', flags=('\\Deleted',),
+                notify_just_mdoc=False))
             return d
 
         def expunge():
@@ -1080,47 +1018,41 @@ class LeapIMAP4ServerTestCase(IMAP4HelperMixin, unittest.TestCase):
             self.results = results
 
         self.results = None
-        d1 = self.connected.addCallback(strip(login))
-        d1.addCallbacks(strip(select), self._ebGeneral)
+        d1 = self.connected.addCallback(strip(add_mailbox))
+        d1.addCallback(strip(login))
+        d1.addCallback(strip(get_mailbox))
         d1.addCallbacks(strip(add_messages), self._ebGeneral)
+        d1.addCallbacks(strip(select), self._ebGeneral)
         d1.addCallbacks(strip(expunge), self._ebGeneral)
         d1.addCallbacks(expunged, self._ebGeneral)
         d1.addCallbacks(self._cbStopClient, self._ebGeneral)
         d2 = self.loopback()
         d = defer.gatherResults([d1, d2])
-        return d.addCallback(self._cbTestExpunge, m)
+        d.addCallback(lambda _: self.mailbox.getMessageCount())
+        return d.addCallback(self._cbTestExpunge)
 
-    def _cbTestExpunge(self, ignored, m):
+    def _cbTestExpunge(self, count):
         # we only left 1 mssage with no deleted flag
-        self.assertEqual(len(m.messages), 1)
-        msg = m.messages.get_msg_by_uid(2)
-
-        msg = list(m.messages)[0]
-        self.assertTrue(msg is not None)
-
-        self.assertEqual(
-            msg.hdoc.content['subject'],
-            'Message 2')
-
+        self.assertEqual(count, 1)
         # the uids of the deleted messages
         self.assertItemsEqual(self.results, [1, 3])
 
 
-class AccountTestCase(IMAP4HelperMixin, unittest.TestCase):
+class AccountTestCase(IMAP4HelperMixin):
     """
     Test the Account.
     """
     def _create_empty_mailbox(self):
-        LeapIMAPServer.theAccount.addMailbox('')
+        return self.server.theAccount.addMailbox('')
 
     def _create_one_mailbox(self):
-        LeapIMAPServer.theAccount.addMailbox('one')
+        return self.server.theAccount.addMailbox('one')
 
     def test_illegalMailboxCreate(self):
         self.assertRaises(AssertionError, self._create_empty_mailbox)
 
 
-class IMAP4ServerSearchTestCase(IMAP4HelperMixin, unittest.TestCase):
+class IMAP4ServerSearchTestCase(IMAP4HelperMixin):
     """
     Tests for the behavior of the search_* functions in L{imap5.IMAP4Server}.
     """
diff --git a/src/leap/mail/imap/tests/test_imap_store_fetch.py b/src/leap/mail/imap/tests/test_imap_store_fetch.py
deleted file mode 100644
index 6da8581..0000000
--- a/src/leap/mail/imap/tests/test_imap_store_fetch.py
+++ /dev/null
@@ -1,71 +0,0 @@
-from twisted.protocols import loopback
-from twisted.python import util
-
-from leap.mail.imap.tests.utils import IMAP4HelperMixin
-
-TEST_USER = "testuser@leap.se"
-TEST_PASSWD = "1234"
-
-
-class StoreAndFetchTestCase(IMAP4HelperMixin):
-    """
-    Several tests to check that the internal storage representation
-    is able to render the message structures as we expect them.
-    """
-
-    def setUp(self):
-        IMAP4HelperMixin.setUp(self)
-        self.received_messages = self.received_uid = None
-        self.result = None
-
-    def addListener(self, x):
-        pass
-
-    def removeListener(self, x):
-        pass
-
-    def _addSignedMessage(self, _):
-        self.server.state = 'select'
-        infile = util.sibpath(__file__, 'rfc822.multi-signed.message')
-        raw = open(infile).read()
-        MBOX_NAME = "multipart/SIGNED"
-
-        self.server.theAccount.addMailbox(MBOX_NAME)
-        mbox = self.server.theAccount.getMailbox(MBOX_NAME)
-        self.server.mbox = mbox
-        # return a deferred that will fire with UID
-        return self.server.mbox.messages.add_msg(raw)
-
-    def _fetchWork(self, uids):
-
-        def result(R):
-            self.result = R
-
-        self.connected.addCallback(
-            self._addSignedMessage).addCallback(
-            lambda uid: self.function(
-                uids, uid=uid)  # do NOT use seq numbers!
-            ).addCallback(result).addCallback(
-            self._cbStopClient).addErrback(self._ebGeneral)
-
-        d = loopback.loopbackTCP(self.server, self.client, noisy=False)
-        d.addCallback(lambda x: self.assertEqual(self.result, self.expected))
-        return d
-
-    def testMultiBody(self):
-        """
-        Test that a multipart signed message is retrieved the same
-        as we stored it.
-        """
-        self.function = self.client.fetchBody
-        messages = '1'
-
-        # XXX review. This probably should give everything?
-
-        self.expected = {1: {
-            'RFC822.TEXT': 'This is an example of a signed message,\n'
-                           'with attachments.\n\n\n--=20\n'
-                           'Nihil sine chao! =E2=88=B4\n',
-            'UID': '1'}}
-        # print "test multi: fetch uid", messages
-        return self._fetchWork(messages)
diff --git a/src/leap/mail/imap/tests/utils.py b/src/leap/mail/imap/tests/utils.py
index 0932bd4..a34538b 100644
--- a/src/leap/mail/imap/tests/utils.py
+++ b/src/leap/mail/imap/tests/utils.py
@@ -1,30 +1,44 @@
-import os
-import tempfile
-import shutil
-
+# -*- coding: utf-8 -*-
+# utils.py
+# Copyright (C) 2014, 2015 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+Common utilities for testing Soledad IMAP Server.
+"""
 from email import parser
 
 from mock import Mock
 from twisted.mail import imap4
 from twisted.internet import defer
 from twisted.protocols import loopback
+from twisted.python import log
 
-from leap.common.testing.basetest import BaseLeapTest
-from leap.mail.imap.account import SoledadBackedAccount
-from leap.mail.imap.memorystore import MemoryStore
-from leap.mail.imap.server import LeapIMAPServer
-from leap.soledad.client import Soledad
+from leap.mail.adaptors import soledad as soledad_adaptor
+from leap.mail.imap.account import IMAPAccount
+from leap.mail.imap.server import LEAPIMAPServer
+from leap.mail.tests.common import SoledadTestMixin
 
 TEST_USER = "testuser@leap.se"
 TEST_PASSWD = "1234"
 
+
 #
 # Simple IMAP4 Client for testing
 #
 
-
 class SimpleClient(imap4.IMAP4Client):
-
     """
     A Simple IMAP4 Client to test our
     Soledad-LEAPServer
@@ -51,161 +65,59 @@ class SimpleClient(imap4.IMAP4Client):
         self.transport.loseConnection()
 
 
-def initialize_soledad(email, gnupg_home, tempdir):
-    """
-    Initializes soledad by hand
-
-    :param email: ID for the user
-    :param gnupg_home: path to home used by gnupg
-    :param tempdir: path to temporal dir
-    :rtype: Soledad instance
-    """
-
-    uuid = "foobar-uuid"
-    passphrase = u"verysecretpassphrase"
-    secret_path = os.path.join(tempdir, "secret.gpg")
-    local_db_path = os.path.join(tempdir, "soledad.u1db")
-    server_url = "http://provider"
-    cert_file = ""
-
-    class MockSharedDB(object):
-
-        get_doc = Mock(return_value=None)
-        put_doc = Mock()
-        lock = Mock(return_value=('atoken', 300))
-        unlock = Mock(return_value=True)
-
-        def __call__(self):
-            return self
-
-    Soledad._shared_db = MockSharedDB()
-
-    _soledad = Soledad(
-        uuid,
-        passphrase,
-        secret_path,
-        local_db_path,
-        server_url,
-        cert_file)
-
-    return _soledad
-
-
-# XXX this is not properly a mixin, since helper already inherits from
-# uniittest.Testcase
-class IMAP4HelperMixin(BaseLeapTest):
+class IMAP4HelperMixin(SoledadTestMixin):
     """
     MixIn containing several utilities to be shared across
     different TestCases
     """
-
     serverCTX = None
     clientCTX = None
 
-    # setUpClass cannot be a classmethod in trial, see:
-    # https://twistedmatrix.com/trac/ticket/1870
-
     def setUp(self):
-        """
-        Setup method for each test.
-
-        Initializes and run a LEAP IMAP4 Server,
-        but passing the same Soledad instance (it's costly to initialize),
-        so we have to be sure to restore state across tests.
-        """
-        self.old_path = os.environ['PATH']
-        self.old_home = os.environ['HOME']
-        self.tempdir = tempfile.mkdtemp(prefix="leap_tests-")
-        self.home = self.tempdir
-        bin_tdir = os.path.join(
-            self.tempdir,
-            'bin')
-        os.environ["PATH"] = bin_tdir
-        os.environ["HOME"] = self.tempdir
-
-        # Soledad: config info
-        self.gnupg_home = "%s/gnupg" % self.tempdir
-        self.email = 'leap@leap.se'
-
-        # initialize soledad by hand so we can control keys
-        self._soledad = initialize_soledad(
-            self.email,
-            self.gnupg_home,
-            self.tempdir)
-        UUID = 'deadbeef',
-        USERID = TEST_USER
-        memstore = MemoryStore()
-
-        ###########
 
-        d = defer.Deferred()
-        self.server = LeapIMAPServer(
-            uuid=UUID, userid=USERID,
-            contextFactory=self.serverCTX,
-            # XXX do we really need this??
-            soledad=self._soledad)
+        soledad_adaptor.cleanup_deferred_locks()
 
-        self.client = SimpleClient(d, contextFactory=self.clientCTX)
-        self.connected = d
-
-        # XXX REVIEW-ME.
-        # We're adding theAccount here to server
-        # but it was also passed to initialization
-        # as it was passed to realm.
-        # I THINK we ONLY need to do it at one place now.
-
-        theAccount = SoledadBackedAccount(
-            USERID,
-            soledad=self._soledad,
-            memstore=memstore)
-        LeapIMAPServer.theAccount = theAccount
-
-        # in case we get something from previous tests...
-        for mb in self.server.theAccount.mailboxes:
-            self.server.theAccount.delete(mb)
+        UUID = 'deadbeef',
+        USERID = TEST_USER
 
-        # email parser
-        self.parser = parser.Parser()
+        def setup_server(account):
+            self.server = LEAPIMAPServer(
+                uuid=UUID, userid=USERID,
+                contextFactory=self.serverCTX,
+                soledad=self._soledad)
+            self.server.theAccount = account
+
+            d_server_ready = defer.Deferred()
+            self.client = SimpleClient(
+                d_server_ready, contextFactory=self.clientCTX)
+            self.connected = d_server_ready
+
+        def setup_account(_):
+            self.parser = parser.Parser()
+
+            # XXX this should be fixed in soledad.
+            # Soledad sync makes trial block forever. The sync it's mocked to
+            # fix this problem. _mock_soledad_get_from_index can be used from
+            # the tests to provide documents.
+            # TODO see here, possibly related?
+            # -- http://www.pythoneye.com/83_20424875/
+            self._soledad.sync = Mock()
+
+            d = defer.Deferred()
+            self.acc = IMAPAccount(USERID, self._soledad, d=d)
+            return d
+
+        d = super(IMAP4HelperMixin, self).setUp()
+        d.addCallback(setup_account)
+        d.addCallback(setup_server)
+        return d
 
     def tearDown(self):
-        """
-        tearDown method called after each test.
-
-        Deletes all documents in the Index, and deletes
-        instances of server and client.
-        """
-        try:
-            self._soledad.close()
-            os.environ["PATH"] = self.old_path
-            os.environ["HOME"] = self.old_home
-            # safety check
-            assert 'leap_tests-' in self.tempdir
-            shutil.rmtree(self.tempdir)
-        except Exception:
-            print "ERROR WHILE CLOSING SOLEDAD"
-
-    def populateMessages(self):
-        """
-        Populates soledad instance with several simple messages
-        """
-        # XXX we should encapsulate this thru SoledadBackedAccount
-        # instead.
-
-        # XXX we also should put this in a mailbox!
-
-        self._soledad.messages.add_msg('', subject="test1")
-        self._soledad.messages.add_msg('', subject="test2")
-        self._soledad.messages.add_msg('', subject="test3")
-        # XXX should change Flags too
-        self._soledad.messages.add_msg('', subject="test4")
-
-    def delete_all_docs(self):
-        """
-        Deletes all the docs in the testing instance of the
-        SoledadBackedAccount.
-        """
-        self.server.theAccount.deleteAllMessages(
-            iknowhatiamdoing=True)
+        SoledadTestMixin.tearDown(self)
+        del self._soledad
+        del self.client
+        del self.server
+        del self.connected
 
     def _cbStopClient(self, ignore):
         self.client.transport.loseConnection()
@@ -213,13 +125,8 @@ class IMAP4HelperMixin(BaseLeapTest):
     def _ebGeneral(self, failure):
         self.client.transport.loseConnection()
         self.server.transport.loseConnection()
-        # can we do something similar?
-        # I guess this was ok with trial, but not in noseland...
-        # log.err(failure, "Problem with %r" % (self.function,))
-        raise failure.value
-        # failure.trap(Exception)
+        if hasattr(self, 'function'):
+            log.err(failure, "Problem with %r" % (self.function,))
 
     def loopback(self):
         return loopback.loopbackAsync(self.server, self.client)
-
-
diff --git a/src/leap/mail/imap/tests/walktree.py b/src/leap/mail/imap/tests/walktree.py
index 695f487..f259a55 100644
--- a/src/leap/mail/imap/tests/walktree.py
+++ b/src/leap/mail/imap/tests/walktree.py
@@ -1,4 +1,4 @@
-#t -*- coding: utf-8 -*-
+# -*- coding: utf-8 -*-
 # walktree.py
 # Copyright (C) 2013 LEAP
 #
@@ -19,6 +19,7 @@ Tests for the walktree module.
 """
 import os
 import sys
+import pprint
 from email import parser
 
 from leap.mail import walk as W
@@ -118,7 +119,6 @@ if DEBUG and DO_CHECK:
     print "Structure: OK"
 
 
-import pprint
 print
 print "RAW DOCS"
 pprint.pprint(raw_docs)
diff --git a/src/leap/mail/incoming/__init__.py b/src/leap/mail/incoming/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/src/leap/mail/incoming/__init__.py
diff --git a/src/leap/mail/incoming/service.py b/src/leap/mail/incoming/service.py
new file mode 100644
index 0000000..2bc6751
--- /dev/null
+++ b/src/leap/mail/incoming/service.py
@@ -0,0 +1,766 @@
+# -*- coding: utf-8 -*-
+# service.py
+# Copyright (C) 2015 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+Incoming mail fetcher.
+"""
+import copy
+import logging
+import shlex
+import time
+import traceback
+import warnings
+
+from email.parser import Parser
+from email.generator import Generator
+from email.utils import parseaddr
+from email.utils import formatdate
+from StringIO import StringIO
+from urlparse import urlparse
+
+from twisted.application.service import Service
+from twisted.python import log
+from twisted.internet import defer, reactor
+from twisted.internet.task import LoopingCall
+from twisted.internet.task import deferLater
+from u1db import errors as u1db_errors
+
+from leap.common.events import emit, catalog
+from leap.common.check import leap_assert, leap_assert_type
+from leap.common.mail import get_email_charset
+from leap.keymanager import errors as keymanager_errors
+from leap.keymanager.openpgp import OpenPGPKey
+from leap.mail.adaptors import soledad_indexes as fields
+from leap.mail.utils import json_loads, empty, first
+from leap.soledad.client import Soledad
+from leap.soledad.common.crypto import ENC_SCHEME_KEY, ENC_JSON_KEY
+from leap.soledad.common.errors import InvalidAuthTokenError
+
+
+logger = logging.getLogger(__name__)
+
+MULTIPART_ENCRYPTED = "multipart/encrypted"
+MULTIPART_SIGNED = "multipart/signed"
+PGP_BEGIN = "-----BEGIN PGP MESSAGE-----"
+PGP_END = "-----END PGP MESSAGE-----"
+
+# The period between succesive checks of the incoming mail
+# queue (in seconds)
+INCOMING_CHECK_PERIOD = 60
+
+
+class MalformedMessage(Exception):
+    """
+    Raised when a given message is not well formed.
+    """
+    pass
+
+
+class IncomingMail(Service):
+    """
+    Fetches and process mail from the incoming pool.
+
+    This object implements IService interface, has public methods
+    startService and stopService that will actually initiate a
+    LoopingCall with check_period recurrency.
+    The LoopingCall itself will invoke the fetch method each time
+    that the check_period expires.
+
+    This loop will sync the soledad db with the remote server and
+    process all the documents found tagged as incoming mail.
+    """
+    # TODO implements IService?
+
+    name = "IncomingMail"
+
+    RECENT_FLAG = "\\Recent"
+    CONTENT_KEY = "content"
+
+    LEAP_SIGNATURE_HEADER = 'X-Leap-Signature'
+    """
+    Header added to messages when they are decrypted by the fetcher,
+    which states the validity of an eventual signature that might be included
+    in the encrypted blob.
+    """
+    LEAP_SIGNATURE_VALID = 'valid'
+    LEAP_SIGNATURE_INVALID = 'invalid'
+    LEAP_SIGNATURE_COULD_NOT_VERIFY = 'could not verify'
+
+    def __init__(self, keymanager, soledad, inbox, userid,
+                 check_period=INCOMING_CHECK_PERIOD):
+
+        """
+        Initialize IncomingMail..
+
+        :param keymanager: a keymanager instance
+        :type keymanager: keymanager.KeyManager
+
+        :param soledad: a soledad instance
+        :type soledad: Soledad
+
+        :param inbox: the collection for the inbox where the new emails will be
+                      stored
+        :type inbox: MessageCollection
+
+        :param check_period: the period to fetch new mail, in seconds.
+        :type check_period: int
+        """
+
+        leap_assert(keymanager, "need a keymanager to initialize")
+        leap_assert_type(soledad, Soledad)
+        leap_assert(check_period, "need a period to check incoming mail")
+        leap_assert_type(check_period, int)
+        leap_assert(userid, "need a userid to initialize")
+
+        self._keymanager = keymanager
+        self._soledad = soledad
+        self._inbox_collection = inbox
+        self._userid = userid
+
+        self._listeners = []
+        self._loop = None
+        self._check_period = check_period
+
+        # initialize a mail parser only once
+        self._parser = Parser()
+
+    def add_listener(self, listener):
+        """
+        Add a listener to inbox insertions.
+
+        This listener function will be called for each message added to the
+        inbox with its uid as parameter. This function should not be blocking
+        or it will block the incoming queue.
+
+        :param listener: the listener function
+        :type listener: callable
+        """
+        self._listeners.append(listener)
+
+    #
+    # Public API: fetch, start_loop, stop.
+    #
+
+    def fetch(self):
+        """
+        Fetch incoming mail, to be called periodically.
+
+        Calls a deferred that will execute the fetch callback
+        in a separate thread
+        """
+        def _sync_errback(failure):
+            log.err(failure)
+
+        def syncSoledadCallback(_):
+            # XXX this should be moved to adaptors
+            d = self._soledad.get_from_index(
+                fields.JUST_MAIL_IDX, "1", "0")
+            d.addCallback(self._process_doclist)
+            d.addErrback(_sync_errback)
+            return d
+
+        logger.debug("fetching mail for: %s %s" % (
+            self._soledad.uuid, self._userid))
+        d = self._sync_soledad()
+        d.addCallbacks(syncSoledadCallback, self._errback)
+        d.addCallbacks(self._signal_fetch_to_ui, self._errback)
+        return d
+
+    def startService(self):
+        """
+        Starts a loop to fetch mail.
+        """
+        Service.startService(self)
+        if self._loop is None:
+            self._loop = LoopingCall(self.fetch)
+            return self._loop.start(self._check_period)
+        else:
+            logger.warning("Tried to start an already running fetching loop.")
+
+    def stopService(self):
+        """
+        Stops the loop that fetches mail.
+        """
+        if self._loop and self._loop.running is True:
+            self._loop.stop()
+            self._loop = None
+        Service.stopService(self)
+
+    #
+    # Private methods.
+    #
+
+    # synchronize incoming mail
+
+    def _errback(self, failure):
+        log.err(failure)
+
+    def _sync_soledad(self):
+        """
+        Synchronize with remote soledad.
+
+        :returns: a list of LeapDocuments, or None.
+        :rtype: iterable or None
+        """
+        def _log_synced(result):
+            log.msg('FETCH soledad SYNCED.')
+            return result
+        try:
+            log.msg('FETCH: syncing soledad...')
+            d = self._soledad.sync()
+            d.addCallback(_log_synced)
+            return d
+        # TODO is this still raised? or should we do failure.trap
+        # instead?
+        except InvalidAuthTokenError:
+            # if the token is invalid, send an event so the GUI can
+            # disable mail and show an error message.
+            emit(catalog.SOLEDAD_INVALID_AUTH_TOKEN)
+
+    def _signal_fetch_to_ui(self, doclist):
+        """
+        Send leap events to ui.
+
+        :param doclist: iterable with msg documents.
+        :type doclist: iterable.
+        :returns: doclist
+        :rtype: iterable
+        """
+        if doclist:
+            fetched_ts = time.mktime(time.gmtime())
+            num_mails = len(doclist) if doclist is not None else 0
+            if num_mails != 0:
+                log.msg("there are %s mails" % (num_mails,))
+            emit(catalog.MAIL_FETCHED_INCOMING,
+                 str(num_mails), str(fetched_ts))
+            return doclist
+
+    def _signal_unread_to_ui(self, *args):
+        """
+        Sends unread event to ui.
+        """
+        emit(catalog.MAIL_UNREAD_MESSAGES,
+             str(self._inbox_collection.count_unseen()))
+
+    # process incoming mail.
+
+    def _process_doclist(self, doclist):
+        """
+        Iterates through the doclist, checks if each doc
+        looks like a message, and yields a deferred that will decrypt and
+        process the message.
+
+        :param doclist: iterable with msg documents.
+        :type doclist: iterable.
+        :returns: a list of deferreds for individual messages.
+        """
+        log.msg('processing doclist')
+        if not doclist:
+            logger.debug("no docs found")
+            return
+        num_mails = len(doclist)
+
+        deferreds = []
+        for index, doc in enumerate(doclist):
+            logger.debug("processing doc %d of %d" % (index + 1, num_mails))
+            emit(catalog.MAIL_MSG_PROCESSING,
+                 str(index), str(num_mails))
+
+            keys = doc.content.keys()
+
+            # TODO Compatibility check with the index in pre-0.6 mx
+            # that does not write the ERROR_DECRYPTING_KEY
+            # This should be removed in 0.7
+
+            has_errors = doc.content.get(fields.ERROR_DECRYPTING_KEY, None)
+            if has_errors is None:
+                warnings.warn("JUST_MAIL_COMPAT_IDX will be deprecated!",
+                              DeprecationWarning)
+
+            if has_errors:
+                logger.debug("skipping msg with decrypting errors...")
+            elif self._is_msg(keys):
+                d = self._decrypt_doc(doc)
+                d.addCallback(self._extract_keys)
+                d.addCallbacks(self._add_message_locally, self._errback)
+                deferreds.append(d)
+        d = defer.gatherResults(deferreds, consumeErrors=True)
+        d.addCallback(lambda _: doclist)
+        return d
+
+    #
+    # operations on individual messages
+    #
+
+    def _decrypt_doc(self, doc):
+        """
+        Decrypt the contents of a document.
+
+        :param doc: A document containing an encrypted message.
+        :type doc: SoledadDocument
+
+        :return: A Deferred that will be fired with the document and the
+                 decrypted message.
+        :rtype: SoledadDocument, str
+        """
+        log.msg('decrypting msg')
+
+        def process_decrypted(res):
+            if isinstance(res, tuple):
+                decrdata, _ = res
+                success = True
+            else:
+                decrdata = ""
+                success = False
+
+            emit(catalog.MAIL_MSG_DECRYPTED, "1" if success else "0")
+            return self._process_decrypted_doc(doc, decrdata)
+
+        d = self._keymanager.decrypt(
+            doc.content[ENC_JSON_KEY],
+            self._userid, OpenPGPKey)
+        d.addErrback(self._errback)
+        d.addCallback(process_decrypted)
+        d.addCallback(lambda data: (doc, data))
+        return d
+
+    def _process_decrypted_doc(self, doc, data):
+        """
+        Process a document containing a succesfully decrypted message.
+
+        :param doc: the incoming message
+        :type doc: SoledadDocument
+        :param data: the json-encoded, decrypted content of the incoming
+                     message
+        :type data: str
+
+        :return: a Deferred that will be fired with an str of the proccessed
+                 data.
+        :rtype: Deferred
+        """
+        log.msg('processing decrypted doc')
+
+        # XXX turn this into an errBack for each one of
+        # the deferreds that would process an individual document
+        try:
+            msg = json_loads(data)
+        except UnicodeError as exc:
+            logger.error("Error while decrypting %s" % (doc.doc_id,))
+            logger.exception(exc)
+
+            # we flag the message as "with decrypting errors",
+            # to avoid further decryption attempts during sync
+            # cycles until we're prepared to deal with that.
+            # What is the same, when Ivan deals with it...
+            # A new decrypting attempt event could be triggered by a
+            # future a library upgrade, or a cli flag to the client,
+            # we just `defer` that for now... :)
+            doc.content[fields.ERROR_DECRYPTING_KEY] = True
+            deferLater(reactor, 0, self._update_incoming_message, doc)
+
+            # FIXME this is just a dirty hack to delay the proper
+            # deferred organization here...
+            # and remember, boys, do not do this at home.
+            return []
+
+        if not isinstance(msg, dict):
+            defer.returnValue(False)
+        if not msg.get(fields.INCOMING_KEY, False):
+            defer.returnValue(False)
+
+        # ok, this is an incoming message
+        rawmsg = msg.get(self.CONTENT_KEY, None)
+        if not rawmsg:
+            return ""
+        return self._maybe_decrypt_msg(rawmsg)
+
+    def _update_incoming_message(self, doc):
+        """
+        Do a put for a soledad document. This probably has been called only
+        in the case that we've needed to update the ERROR_DECRYPTING_KEY
+        flag in an incoming message, to get it out of the decrypting queue.
+
+        :param doc: the SoledadDocument to update
+        :type doc: SoledadDocument
+        """
+        log.msg("Updating Incoming MSG: SoledadDoc %s" % (doc.doc_id))
+        return self._soledad.put_doc(doc)
+
+    def _delete_incoming_message(self, doc):
+        """
+        Delete document.
+
+        :param doc: the SoledadDocument to delete
+        :type doc: SoledadDocument
+        """
+        log.msg("Deleting Incoming message: %s" % (doc.doc_id,))
+        return self._soledad.delete_doc(doc)
+
+    def _maybe_decrypt_msg(self, data):
+        """
+        Tries to decrypt a gpg message if data looks like one.
+
+        :param data: the text to be decrypted.
+        :type data: str
+
+        :return: a Deferred that will be fired with an str of data, possibly
+                 decrypted.
+        :rtype: Deferred
+        """
+        leap_assert_type(data, str)
+        log.msg('maybe decrypting doc')
+
+        # parse the original message
+        encoding = get_email_charset(data)
+        msg = self._parser.parsestr(data)
+
+        fromHeader = msg.get('from', None)
+        senderAddress = None
+        if (fromHeader is not None and
+            (msg.get_content_type() == MULTIPART_ENCRYPTED or
+             msg.get_content_type() == MULTIPART_SIGNED)):
+                senderAddress = parseaddr(fromHeader)[1]
+
+        def add_leap_header(ret):
+            decrmsg, signkey = ret
+            if (senderAddress is None or signkey is None or
+                    isinstance(signkey, keymanager_errors.KeyNotFound)):
+                decrmsg.add_header(
+                    self.LEAP_SIGNATURE_HEADER,
+                    self.LEAP_SIGNATURE_COULD_NOT_VERIFY)
+            elif isinstance(signkey, keymanager_errors.InvalidSignature):
+                decrmsg.add_header(
+                    self.LEAP_SIGNATURE_HEADER,
+                    self.LEAP_SIGNATURE_INVALID)
+            else:
+                decrmsg.add_header(
+                    self.LEAP_SIGNATURE_HEADER,
+                    self.LEAP_SIGNATURE_VALID,
+                    pubkey=signkey.key_id)
+            return decrmsg.as_string()
+
+        if msg.get_content_type() == MULTIPART_ENCRYPTED:
+            d = self._decrypt_multipart_encrypted_msg(
+                msg, encoding, senderAddress)
+        else:
+            d = self._maybe_decrypt_inline_encrypted_msg(
+                msg, encoding, senderAddress)
+        d.addCallback(add_leap_header)
+        return d
+
+    def _decrypt_multipart_encrypted_msg(self, msg, encoding, senderAddress):
+        """
+        Decrypt a message with content-type 'multipart/encrypted'.
+
+        :param msg: The original encrypted message.
+        :type msg: Message
+        :param encoding: The encoding of the email message.
+        :type encoding: str
+        :param senderAddress: The email address of the sender of the message.
+        :type senderAddress: str
+
+        :return: A Deferred that will be fired with a tuple containing a
+                 decrypted Message and the signing OpenPGPKey if the signature
+                 is valid or InvalidSignature or KeyNotFound.
+        :rtype: Deferred
+        """
+        log.msg('decrypting multipart encrypted msg')
+        msg = copy.deepcopy(msg)
+        self._msg_multipart_sanity_check(msg)
+
+        # parse message and get encrypted content
+        pgpencmsg = msg.get_payload()[1]
+        encdata = pgpencmsg.get_payload()
+
+        # decrypt or fail gracefully
+        def build_msg(res):
+            decrdata, signkey = res
+
+            decrmsg = self._parser.parsestr(decrdata)
+            # remove original message's multipart/encrypted content-type
+            del(msg['content-type'])
+
+            # replace headers back in original message
+            for hkey, hval in decrmsg.items():
+                try:
+                    # this will raise KeyError if header is not present
+                    msg.replace_header(hkey, hval)
+                except KeyError:
+                    msg[hkey] = hval
+
+            # all ok, replace payload by unencrypted payload
+            msg.set_payload(decrmsg.get_payload())
+            return (msg, signkey)
+
+        d = self._keymanager.decrypt(
+            encdata, self._userid, OpenPGPKey,
+            verify=senderAddress)
+        d.addCallbacks(build_msg, self._decryption_error, errbackArgs=(msg,))
+        return d
+
+    def _maybe_decrypt_inline_encrypted_msg(self, origmsg, encoding,
+                                            senderAddress):
+        """
+        Possibly decrypt an inline OpenPGP encrypted message.
+
+        :param origmsg: The original, possibly encrypted message.
+        :type origmsg: Message
+        :param encoding: The encoding of the email message.
+        :type encoding: str
+        :param senderAddress: The email address of the sender of the message.
+        :type senderAddress: str
+
+        :return: A Deferred that will be fired with a tuple containing a
+                 decrypted Message and the signing OpenPGPKey if the signature
+                 is valid or InvalidSignature or KeyNotFound.
+        :rtype: Deferred
+        """
+        log.msg('maybe decrypting inline encrypted msg')
+        # serialize the original message
+        buf = StringIO()
+        g = Generator(buf)
+        g.flatten(origmsg)
+        data = buf.getvalue()
+
+        def decrypted_data(res):
+            decrdata, signkey = res
+            return data.replace(pgp_message, decrdata), signkey
+
+        def encode_and_return(res):
+            data, signkey = res
+            if isinstance(data, unicode):
+                data = data.encode(encoding, 'replace')
+            return (self._parser.parsestr(data), signkey)
+
+        # handle exactly one inline PGP message
+        if PGP_BEGIN in data:
+            begin = data.find(PGP_BEGIN)
+            end = data.find(PGP_END)
+            pgp_message = data[begin:end + len(PGP_END)]
+            d = self._keymanager.decrypt(
+                pgp_message, self._userid, OpenPGPKey,
+                verify=senderAddress)
+            d.addCallbacks(decrypted_data, self._decryption_error,
+                           errbackArgs=(data,))
+        else:
+            d = defer.succeed((data, None))
+        d.addCallback(encode_and_return)
+        return d
+
+    def _decryption_error(self, failure, msg):
+        """
+        Check for known decryption errors
+        """
+        if failure.check(keymanager_errors.DecryptError):
+            logger.warning('Failed to decrypt encrypted message (%s). '
+                           'Storing message without modifications.'
+                           % str(failure.value))
+            return (msg, None)
+        elif failure.check(keymanager_errors.KeyNotFound):
+            logger.error('Failed to find private key for decryption (%s). '
+                         'Storing message without modifications.'
+                         % str(failure.value))
+            return (msg, None)
+        else:
+            return failure
+
+    def _extract_keys(self, msgtuple):
+        """
+        Retrieve attached keys to the mesage and parse message headers for an
+        *OpenPGP* header as described on the `IETF draft
+        <http://tools.ietf.org/html/draft-josefsson-openpgp-mailnews-header-06>`
+        only urls with https and the same hostname than the email are supported
+        for security reasons.
+
+        :param msgtuple: a tuple consisting of a SoledadDocument
+                         instance containing the incoming message
+                         and data, the json-encoded, decrypted content of the
+                         incoming message
+        :type msgtuple: (SoledadDocument, str)
+
+        :return: A Deferred that will be fired with msgtuple when key
+                 extraction finishes
+        :rtype: Deferred
+        """
+        OpenPGP_HEADER = 'OpenPGP'
+        doc, data = msgtuple
+
+        # XXX the parsing of the message is done in mailbox.addMessage, maybe
+        #     we should do it in this module so we don't need to parse it again
+        #     here
+        msg = self._parser.parsestr(data)
+        _, fromAddress = parseaddr(msg['from'])
+
+        header = msg.get(OpenPGP_HEADER, None)
+        dh = defer.succeed(None)
+        if header is not None:
+            dh = self._extract_openpgp_header(header, fromAddress)
+
+        da = defer.succeed(None)
+        if msg.is_multipart():
+            da = self._extract_attached_key(msg.get_payload(), fromAddress)
+
+        d = defer.gatherResults([dh, da])
+        d.addCallback(lambda _: msgtuple)
+        return d
+
+    def _extract_openpgp_header(self, header, address):
+        """
+        Import keys from the OpenPGP header
+
+        :param header: OpenPGP header string
+        :type header: str
+        :param address: email address in the from header
+        :type address: str
+
+        :return: A Deferred that will be fired when header extraction is done
+        :rtype: Deferred
+        """
+        d = defer.succeed(None)
+        fields = dict([f.strip(' ').split('=') for f in header.split(';')])
+        if 'url' in fields:
+            url = shlex.split(fields['url'])[0]  # remove quotations
+            urlparts = urlparse(url)
+            addressHostname = address.split('@')[1]
+            if (
+                urlparts.scheme == 'https' and
+                urlparts.hostname == addressHostname
+            ):
+                def fetch_error(failure):
+                    if failure.check(keymanager_errors.KeyNotFound):
+                        logger.warning("Url from OpenPGP header %s failed"
+                                       % (url,))
+                    elif failure.check(keymanager_errors.KeyAttributesDiffer):
+                        logger.warning("Key from OpenPGP header url %s didn't "
+                                       "match the from address %s"
+                                       % (url, address))
+                    else:
+                        return failure
+
+                d = self._keymanager.fetch_key(address, url, OpenPGPKey)
+                d.addCallback(
+                    lambda _:
+                    logger.info("Imported key from header %s" % (url,)))
+                d.addErrback(fetch_error)
+            else:
+                logger.debug("No valid url on OpenPGP header %s" % (url,))
+        else:
+            logger.debug("There is no url on the OpenPGP header: %s"
+                         % (header,))
+        return d
+
+    def _extract_attached_key(self, attachments, address):
+        """
+        Import keys from the attachments
+
+        :param attachments: email attachment list
+        :type attachments: list(email.Message)
+        :param address: email address in the from header
+        :type address: str
+
+        :return: A Deferred that will be fired when all the keys are stored
+        :rtype: Deferred
+        """
+        MIME_KEY = "application/pgp-keys"
+
+        deferreds = []
+        for attachment in attachments:
+            if MIME_KEY == attachment.get_content_type():
+                logger.debug("Add key from attachment")
+                d = self._keymanager.put_raw_key(
+                    attachment.get_payload(),
+                    OpenPGPKey,
+                    address=address)
+                deferreds.append(d)
+        return defer.gatherResults(deferreds)
+
+    def _add_message_locally(self, msgtuple):
+        """
+        Adds a message to local inbox and delete it from the incoming db
+        in soledad.
+
+        :param msgtuple: a tuple consisting of a SoledadDocument
+                         instance containing the incoming message
+                         and data, the json-encoded, decrypted content of the
+                         incoming message
+        :type msgtuple: (SoledadDocument, str)
+
+        :return: A Deferred that will be fired when the messages is stored
+        :rtype: Defferred
+        """
+        doc, raw_data = msgtuple
+        insertion_date = formatdate(time.time())
+        log.msg('adding message %s to local db' % (doc.doc_id,))
+
+        def msgSavedCallback(result):
+            if empty(result):
+                return
+
+            for listener in self._listeners:
+                listener(result)
+
+            def signal_deleted(doc_id):
+                emit(catalog.MAIL_MSG_DELETED_INCOMING)
+                return doc_id
+
+            emit(catalog.MAIL_MSG_SAVED_LOCALLY)
+            d = self._delete_incoming_message(doc)
+            d.addCallback(signal_deleted)
+            return d
+
+        d = self._inbox_collection.add_msg(
+            raw_data, (self.RECENT_FLAG,), date=insertion_date)
+        d.addCallbacks(msgSavedCallback, self._errback)
+        return d
+
+    #
+    # helpers
+    #
+
+    def _msg_multipart_sanity_check(self, msg):
+        """
+        Performs a sanity check against a multipart encrypted msg
+
+        :param msg: The original encrypted message.
+        :type msg: Message
+        """
+        # sanity check
+        payload = msg.get_payload()
+        if len(payload) != 2:
+            raise MalformedMessage(
+                'Multipart/encrypted messages should have exactly 2 body '
+                'parts (instead of %d).' % len(payload))
+        if payload[0].get_content_type() != 'application/pgp-encrypted':
+            raise MalformedMessage(
+                "Multipart/encrypted messages' first body part should "
+                "have content type equal to 'application/pgp-encrypted' "
+                "(instead of %s)." % payload[0].get_content_type())
+        if payload[1].get_content_type() != 'application/octet-stream':
+            raise MalformedMessage(
+                "Multipart/encrypted messages' second body part should "
+                "have content type equal to 'octet-stream' (instead of "
+                "%s)." % payload[1].get_content_type())
+
+    def _is_msg(self, keys):
+        """
+        Checks if the keys of a dictionary match the signature
+        of the document type we use for messages.
+
+        :param keys: iterable containing the strings to match.
+        :type keys: iterable of strings.
+        :rtype: bool
+        """
+        return ENC_SCHEME_KEY in keys and ENC_JSON_KEY in keys
diff --git a/src/leap/mail/incoming/tests/__init__.py b/src/leap/mail/incoming/tests/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/src/leap/mail/incoming/tests/__init__.py
diff --git a/src/leap/mail/incoming/tests/test_incoming_mail.py b/src/leap/mail/incoming/tests/test_incoming_mail.py
new file mode 100644
index 0000000..f43f746
--- /dev/null
+++ b/src/leap/mail/incoming/tests/test_incoming_mail.py
@@ -0,0 +1,260 @@
+# -*- coding: utf-8 -*-
+# test_incoming_mail.py
+# Copyright (C) 2015 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+Test case for leap.mail.incoming.service
+
+@authors: Ruben Pollan, <meskio@sindominio.net>
+
+@license: GPLv3, see included LICENSE file
+"""
+
+import json
+
+from email.mime.application import MIMEApplication
+from email.mime.multipart import MIMEMultipart
+from email.parser import Parser
+from mock import Mock
+from twisted.internet import defer
+
+from leap.keymanager.openpgp import OpenPGPKey
+from leap.mail.adaptors import soledad_indexes as fields
+from leap.mail.constants import INBOX_NAME
+from leap.mail.imap.account import IMAPAccount
+from leap.mail.incoming.service import IncomingMail
+from leap.mail.smtp.rfc3156 import MultipartEncrypted, PGPEncrypted
+from leap.mail.tests import (
+    TestCaseWithKeyManager,
+    ADDRESS,
+    ADDRESS_2,
+)
+from leap.soledad.common.document import SoledadDocument
+from leap.soledad.common.crypto import (
+    EncryptionSchemes,
+    ENC_JSON_KEY,
+    ENC_SCHEME_KEY,
+)
+
+# TODO: add some tests for encrypted, unencrypted, signed and unsgined messages
+
+
+class IncomingMailTestCase(TestCaseWithKeyManager):
+    """
+    Tests for the incoming mail parser
+    """
+    NICKSERVER = "http://domain"
+    BODY = """
+Governments of the Industrial World, you weary giants of flesh and steel, I
+come from Cyberspace, the new home of Mind. On behalf of the future, I ask
+you of the past to leave us alone. You are not welcome among us. You have
+no sovereignty where we gather.
+    """
+    EMAIL = """from: Test from SomeDomain <%(from)s>
+to: %(to)s
+subject: independence of cyberspace
+
+%(body)s
+    """ % {
+        "from": ADDRESS_2,
+        "to": ADDRESS,
+        "body": BODY
+    }
+
+    def setUp(self):
+        def getInbox(_):
+            d = defer.Deferred()
+            theAccount = IMAPAccount(ADDRESS, self._soledad, d=d)
+            d.addCallback(
+                lambda _: theAccount.getMailbox(INBOX_NAME))
+            return d
+
+        def setUpFetcher(inbox):
+            # Soledad sync makes trial block forever. The sync it's mocked to
+            # fix this problem. _mock_soledad_get_from_index can be used from
+            # the tests to provide documents.
+            # TODO ---- see here http://www.pythoneye.com/83_20424875/
+            self._soledad.sync = Mock(return_value=defer.succeed(None))
+
+            self.fetcher = IncomingMail(
+                self._km,
+                self._soledad,
+                inbox.collection,
+                ADDRESS)
+
+            # The messages don't exist on soledad will fail on deletion
+            self.fetcher._delete_incoming_message = Mock(
+                return_value=defer.succeed(None))
+
+        d = super(IncomingMailTestCase, self).setUp()
+        d.addCallback(getInbox)
+        d.addCallback(setUpFetcher)
+        return d
+
+    def tearDown(self):
+        del self.fetcher
+        return super(IncomingMailTestCase, self).tearDown()
+
+    def testExtractOpenPGPHeader(self):
+        """
+        Test the OpenPGP header key extraction
+        """
+        KEYURL = "https://leap.se/key.txt"
+        OpenPGP = "id=12345678; url=\"%s\"; preference=signencrypt" % (KEYURL,)
+
+        message = Parser().parsestr(self.EMAIL)
+        message.add_header("OpenPGP", OpenPGP)
+        self.fetcher._keymanager.fetch_key = Mock(
+            return_value=defer.succeed(None))
+
+        def fetch_key_called(ret):
+            self.fetcher._keymanager.fetch_key.assert_called_once_with(
+                ADDRESS_2, KEYURL, OpenPGPKey)
+
+        d = self._create_incoming_email(message.as_string())
+        d.addCallback(
+            lambda email:
+            self._mock_soledad_get_from_index(fields.JUST_MAIL_IDX, [email]))
+        d.addCallback(lambda _: self.fetcher.fetch())
+        d.addCallback(fetch_key_called)
+        return d
+
+    def testExtractOpenPGPHeaderInvalidUrl(self):
+        """
+        Test the OpenPGP header key extraction
+        """
+        KEYURL = "https://someotherdomain.com/key.txt"
+        OpenPGP = "id=12345678; url=\"%s\"; preference=signencrypt" % (KEYURL,)
+
+        message = Parser().parsestr(self.EMAIL)
+        message.add_header("OpenPGP", OpenPGP)
+        self.fetcher._keymanager.fetch_key = Mock()
+
+        def fetch_key_called(ret):
+            self.assertFalse(self.fetcher._keymanager.fetch_key.called)
+
+        d = self._create_incoming_email(message.as_string())
+        d.addCallback(
+            lambda email:
+            self._mock_soledad_get_from_index(fields.JUST_MAIL_IDX, [email]))
+        d.addCallback(lambda _: self.fetcher.fetch())
+        d.addCallback(fetch_key_called)
+        return d
+
+    def testExtractAttachedKey(self):
+        """
+        Test the OpenPGP header key extraction
+        """
+        KEY = "-----BEGIN PGP PUBLIC KEY BLOCK-----\n..."
+
+        message = MIMEMultipart()
+        message.add_header("from", ADDRESS_2)
+        key = MIMEApplication("", "pgp-keys")
+        key.set_payload(KEY)
+        message.attach(key)
+        self.fetcher._keymanager.put_raw_key = Mock(
+            return_value=defer.succeed(None))
+        self.fetcher._keymanager.fetch_key = Mock()
+
+        def put_raw_key_called(_):
+            self.fetcher._keymanager.put_raw_key.assert_called_once_with(
+                KEY, OpenPGPKey, address=ADDRESS_2)
+
+        d = self._do_fetch(message.as_string())
+        d.addCallback(put_raw_key_called)
+        return d
+
+    def testDecryptEmail(self):
+        self.fetcher._decryption_error = Mock()
+
+        def create_encrypted_message(encstr):
+            message = Parser().parsestr(self.EMAIL)
+            newmsg = MultipartEncrypted('application/pgp-encrypted')
+            for hkey, hval in message.items():
+                newmsg.add_header(hkey, hval)
+
+            encmsg = MIMEApplication(
+                encstr, _subtype='octet-stream', _encoder=lambda x: x)
+            encmsg.add_header('content-disposition', 'attachment',
+                              filename='msg.asc')
+            # create meta message
+            metamsg = PGPEncrypted()
+            metamsg.add_header('Content-Disposition', 'attachment')
+            # attach pgp message parts to new message
+            newmsg.attach(metamsg)
+            newmsg.attach(encmsg)
+            return newmsg
+
+        def decryption_error_not_called(_):
+            self.assertFalse(self.fetcher._decyption_error.called,
+                             "There was some errors with decryption")
+
+        d = self._km.encrypt(
+            self.EMAIL,
+            ADDRESS, OpenPGPKey, sign=ADDRESS_2)
+        d.addCallback(create_encrypted_message)
+        d.addCallback(
+            lambda message:
+            self._do_fetch(message.as_string()))
+        return d
+
+    def testListener(self):
+        self.called = False
+
+        def listener(uid):
+            self.called = True
+
+        def listener_called(_):
+            self.assertTrue(self.called)
+
+        self.fetcher.add_listener(listener)
+        d = self._do_fetch(self.EMAIL)
+        d.addCallback(listener_called)
+        return d
+
+    def _do_fetch(self, message):
+        d = self._create_incoming_email(message)
+        d.addCallback(
+            lambda email:
+            self._mock_soledad_get_from_index(fields.JUST_MAIL_IDX, [email]))
+        d.addCallback(lambda _: self.fetcher.fetch())
+        return d
+
+    def _create_incoming_email(self, email_str):
+        email = SoledadDocument()
+        data = json.dumps(
+            {"incoming": True, "content": email_str},
+            ensure_ascii=False)
+
+        def set_email_content(encr_data):
+            email.content = {
+                fields.INCOMING_KEY: True,
+                fields.ERROR_DECRYPTING_KEY: False,
+                ENC_SCHEME_KEY: EncryptionSchemes.PUBKEY,
+                ENC_JSON_KEY: encr_data
+            }
+            return email
+        d = self._km.encrypt(data, ADDRESS, OpenPGPKey, fetch_remote=False)
+        d.addCallback(set_email_content)
+        return d
+
+    def _mock_soledad_get_from_index(self, index_name, value):
+        get_from_index = self._soledad.get_from_index
+
+        def soledad_mock(idx_name, *key_values):
+            if index_name == idx_name:
+                return defer.succeed(value)
+            return get_from_index(idx_name, *key_values)
+        self.fetcher._soledad.get_from_index = Mock(side_effect=soledad_mock)
diff --git a/src/leap/mail/interfaces.py b/src/leap/mail/interfaces.py
new file mode 100644
index 0000000..899400f
--- /dev/null
+++ b/src/leap/mail/interfaces.py
@@ -0,0 +1,116 @@
+# -*- coding: utf-8 -*-
+# interfaces.py
+# Copyright (C) 2014 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+Interfaces for the leap.mail module.
+"""
+from zope.interface import Interface, Attribute
+
+
+class IMessageWrapper(Interface):
+    """
+    I know how to access the different parts into which a given message is
+    splitted into.
+    """
+
+    fdoc = Attribute('A dictionaly-like containing the flags document '
+                     '(mutable)')
+    hdoc = Attribute('A dictionary-like containing the headers docuemnt '
+                     '(immutable)')
+    cdocs = Attribute('A dictionary with the content-docs, one-indexed')
+
+
+# TODO [ ] Catch up with the actual implementation!
+#          Lot of stuff added there ...
+
+class IMailAdaptor(Interface):
+    """
+    I know how to store the standard representation for messages and mailboxes,
+    and how to update the relevant mutable parts when needed.
+    """
+
+    def initialize_store(self, store):
+        """
+        Performs whatever initialization is needed before the store can be
+        used (creating indexes, sanity checks, etc).
+
+        :param store: store
+        :returns: a Deferred that will fire when the store is correctly
+                  initialized.
+        :rtype: deferred
+        """
+
+    # TODO is staticmethod valid with an interface?
+    # @staticmethod
+    def get_msg_from_string(self, MessageClass, raw_msg):
+        """
+        Return IMessageWrapper implementor from a raw mail string
+
+        :param MessageClass: an implementor of IMessage
+        :type raw_msg: str
+        :rtype: implementor of leap.mail.IMessage
+        """
+
+    # TODO is staticmethod valid with an interface?
+    # @staticmethod
+    def get_msg_from_docs(self, MessageClass, msg_wrapper):
+        """
+        Return an IMessage implementor from its parts.
+
+        :param MessageClass: an implementor of IMessage
+        :param msg_wrapper: an implementor of IMessageWrapper
+        :rtype: implementor of leap.mail.IMessage
+        """
+
+    # -------------------------------------------------------------------
+    # XXX unsure about the following part yet ...........................
+
+    # the idea behind these three methods is that the adaptor also offers a
+    # fixed interface to create the documents the first time (using
+    # soledad.create_docs or whatever method maps to it in a similar store, and
+    # also allows to update flags and tags, hiding the actual implementation of
+    # where the flags/tags live in behind the concrete MailWrapper in use
+    # by this particular adaptor. In our impl it will be put_doc(fdoc) after
+    # locking the getting + updating of that fdoc for atomicity.
+
+    # 'store' must be an instance of something that offers a minimal subset of
+    # the document API that Soledad currently implements (create_doc, put_doc)
+    # I *think* store should belong to Account/Collection and be passed as
+    # param here instead of relying on it being an attribute of the instance.
+
+    def create_msg_docs(self, store, msg_wrapper):
+        """
+        :param store: The documents store
+        :type store:
+        :param msg_wrapper:
+        :type msg_wrapper: IMessageWrapper implementor
+        """
+
+    def update_msg_flags(self, store, msg_wrapper):
+        """
+        :param store: The documents store
+        :type store:
+        :param msg_wrapper:
+        :type msg_wrapper: IMessageWrapper implementor
+        """
+
+    def update_msg_tags(self, store, msg_wrapper):
+        """
+        :param store: The documents store
+        :type store:
+        :param msg_wrapper:
+        :type msg_wrapper: IMessageWrapper implementor
+        """
diff --git a/src/leap/mail/mail.py b/src/leap/mail/mail.py
new file mode 100644
index 0000000..540a493
--- /dev/null
+++ b/src/leap/mail/mail.py
@@ -0,0 +1,1097 @@
+# -*- coding: utf-8 -*-
+# mail.py
+# Copyright (C) 2014 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+Generic Access to Mail objects: Public LEAP Mail API.
+"""
+import itertools
+import uuid
+import logging
+import StringIO
+import time
+import weakref
+
+from twisted.internet import defer
+from twisted.python import log
+
+from leap.common.check import leap_assert_type
+from leap.common.events import emit, catalog
+from leap.common.mail import get_email_charset
+
+from leap.mail.adaptors.soledad import SoledadMailAdaptor
+from leap.mail.constants import INBOX_NAME
+from leap.mail.constants import MessageFlags
+from leap.mail.mailbox_indexer import MailboxIndexer
+from leap.mail.plugins import soledad_sync_hooks
+from leap.mail.utils import find_charset, CaseInsensitiveDict
+from leap.mail.utils import lowerdict
+
+logger = logging.getLogger(name=__name__)
+
+
+# TODO LIST
+# [ ] Probably change the name of this module to "api" or "account", mail is
+#     too generic (there's also IncomingMail, and OutgoingMail
+# [ ] Profile add_msg.
+
+def _get_mdoc_id(mbox, chash):
+    """
+    Get the doc_id for the metamsg document.
+    """
+    return "M+{mbox}+{chash}".format(mbox=mbox, chash=chash)
+
+
+def _write_and_rewind(payload):
+    fd = StringIO.StringIO()
+    fd.write(payload)
+    fd.seek(0)
+    return fd
+
+
+def _encode_payload(payload, ctype=""):
+    """
+    Properly encode an unicode payload (which can be string or unicode) as a
+    string.
+
+    :param payload: the payload to encode. currently soledad returns unicode
+                    strings.
+    :type payload: basestring
+    :param ctype: optional, the content of the content-type header for this
+                  payload.
+    :type ctype: str
+    :rtype: str
+    """
+    # TODO Related, it's proposed that we're able to pass
+    # the encoding to the soledad documents. Better to store the charset there?
+    # FIXME -----------------------------------------------
+    # this need a dedicated test-suite
+    charset = find_charset(ctype)
+
+    # XXX get from mail headers if not multipart!
+    # Beware also that we should pass the proper encoding to
+    # soledad when it's creating the documents.
+    # if not charset:
+    # charset = get_email_charset(payload)
+    # -----------------------------------------------------
+
+    if not charset:
+        charset = "utf-8"
+
+    try:
+        if isinstance(payload, unicode):
+            payload = payload.encode(charset)
+    except UnicodeError as exc:
+        logger.error(
+            "Unicode error, using 'replace'. {0!r}".format(exc))
+        payload = payload.encode(charset, 'replace')
+    return payload
+
+
+def _unpack_headers(headers_dict):
+    """
+    Take a "packed" dict containing headers (with repeated keys represented as
+    line breaks inside each value, preceded by the header key) and return a
+    list of tuples in which each repeated key has a different tuple.
+    """
+    headers_l = headers_dict.items()
+    for i, (k, v) in enumerate(headers_l):
+        splitted = v.split(k.lower() + ": ")
+        if len(splitted) != 1:
+            inner = zip(
+                itertools.cycle([k]),
+                map(lambda l: l.rstrip('\n'), splitted))
+            headers_l = headers_l[:i] + inner + headers_l[i + 1:]
+    return headers_l
+
+
+def _get_index_for_cdoc(part_map, cdocs_dict):
+    """
+    Get, if possible, the index for a given content-document matching the phash
+    of the passed part_map.
+
+    This is used when we are initializing a MessagePart, because we just pass a
+    reference to the parent message cdocs container and we need to iterate
+    through the cdocs to figure out which content-doc matches the phash of the
+    part we're currently rendering.
+
+    It is also used when recursing through a nested multipart message, because
+    in the initialization of the child MessagePart we pass a dictionary only
+    for the referenced cdoc.
+
+    :param part_map: a dict describing the mapping of the parts for the current
+                     message-part.
+    :param cdocs: a dict of content-documents, 0-indexed.
+    :rtype: int
+    """
+    phash = part_map.get('phash', None)
+    if phash:
+        for i, cdoc_wrapper in cdocs_dict.items():
+            if cdoc_wrapper.phash == phash:
+                return i
+    return None
+
+
+class MessagePart(object):
+    # TODO This class should be better abstracted from the data model.
+    # TODO support arbitrarily nested multiparts (right now we only support
+    #      the trivial case)
+
+    def __init__(self, part_map, cdocs={}, nested=False):
+        """
+        :param part_map: a dictionary mapping the subparts for
+                         this MessagePart (1-indexed).
+        :type part_map: dict
+
+        The format for the part_map is as follows:
+
+        {u'ctype': u'text/plain',
+        u'headers': [[u'Content-Type', u'text/plain; charset="utf-8"'],
+                     [u'Content-Transfer-Encoding', u'8bit']],
+        u'multi': False,
+        u'parts': 1,
+        u'phash': u'02D82B29F6BB0C8612D1C',
+        u'size': 132}
+
+        :param cdocs: optional, a reference to the top-level dict of wrappers
+                      for content-docs (1-indexed).
+        """
+        self._pmap = part_map
+        self._cdocs = cdocs
+        self._nested = nested
+
+        index = _get_index_for_cdoc(part_map, self._cdocs) or 1
+        self._index = index
+
+    def get_size(self):
+        """
+        Size of the body, in octets.
+        """
+        total = self._pmap['size']
+        _h = self.get_headers()
+        headers = len(
+            '\n'.join(["%s: %s" % (k, v) for k, v in dict(_h).items()]))
+        # have to subtract 2 blank lines
+        return total - headers - 2
+
+    def get_body_file(self):
+        payload = ""
+        pmap = self._pmap
+        multi = pmap.get('multi')
+        if not multi:
+            payload = self._get_payload(self._index)
+        else:
+            # XXX uh, multi also...  should recurse.
+            # This needs to be implemented in a more general and elegant way.
+            raise NotImplementedError
+        if payload:
+            payload = _encode_payload(payload)
+
+        return _write_and_rewind(payload)
+
+    def get_headers(self):
+        return CaseInsensitiveDict(self._pmap.get("headers", []))
+
+    def is_multipart(self):
+        return self._pmap.get("multi", False)
+
+    def get_subpart(self, part):
+        if not self.is_multipart():
+            raise TypeError
+
+        sub_pmap = self._pmap.get("part_map", {})
+
+        # XXX BUG --- workaround. Subparts with more than 1 subparts
+        # need to get the requested index for the subpart decremented.
+        # Off-by-one error, should investigate which is the real reason and
+        # fix it, this is only a quick workaround.
+        num_parts = self._pmap.get("parts", 0)
+        if num_parts > 1:
+            part = part - 1
+        # -------------------------------------------------------------
+
+        try:
+            part_map = sub_pmap[str(part)]
+        except KeyError:
+            log.msg("getSubpart for %s: KeyError" % (part,))
+            raise IndexError
+
+        cdoc_index = _get_index_for_cdoc(part_map, self._cdocs)
+        cdoc = self._cdocs.get(cdoc_index, {})
+
+        return MessagePart(part_map, cdocs={1: cdoc}, nested=True)
+
+    def _get_payload(self, index):
+        cdoc_wrapper = self._cdocs.get(index, None)
+        if cdoc_wrapper:
+            return cdoc_wrapper.raw
+        return ""
+
+
+class Message(object):
+    """
+    Represents a single message, and gives access to all its attributes.
+    """
+
+    def __init__(self, wrapper, uid=None):
+        """
+        :param wrapper: an instance of an implementor of IMessageWrapper
+        :param uid:
+        :type uid: int
+        """
+        self._wrapper = wrapper
+        self._uid = uid
+
+    def get_wrapper(self):
+        """
+        Get the wrapper for this message.
+        """
+        return self._wrapper
+
+    def get_uid(self):
+        """
+        Get the (optional) UID.
+        """
+        return self._uid
+
+    # imap.IMessage methods
+
+    def get_flags(self):
+        """
+        Get flags for this message.
+        :rtype: tuple
+        """
+        return self._wrapper.fdoc.get_flags()
+
+    def get_internal_date(self):
+        """
+        Retrieve the date internally associated with this message
+
+        According to the spec, this is NOT the date and time in the
+        RFC-822 header, but rather a date and time that reflects when the
+        message was received.
+
+        * In SMTP, date and time of final delivery.
+        * In COPY, internal date/time of the source message.
+        * In APPEND, date/time specified.
+
+        :return: An RFC822-formatted date string.
+        :rtype: str
+        """
+        return self._wrapper.hdoc.date
+
+    # imap.IMessageParts
+
+    def get_headers(self):
+        """
+        Get the raw headers document.
+        """
+        return CaseInsensitiveDict(self._wrapper.hdoc.headers)
+
+    def get_body_file(self, store):
+        """
+        Get a file descriptor with the body content.
+        """
+        def write_and_rewind_if_found(cdoc):
+            payload = cdoc.raw if cdoc else ""
+            # XXX pass ctype from headers if not multipart?
+            if payload:
+                payload = _encode_payload(payload, ctype=cdoc.content_type)
+            return _write_and_rewind(payload)
+
+        d = defer.maybeDeferred(self._wrapper.get_body, store)
+        d.addCallback(write_and_rewind_if_found)
+        return d
+
+    def get_size(self):
+        """
+        Size of the whole message, in octets (including headers).
+        """
+        total = self._wrapper.fdoc.size
+        return total
+
+    def is_multipart(self):
+        """
+        Return True if this message is multipart.
+        """
+        return self._wrapper.fdoc.multi
+
+    def get_subpart(self, part):
+        """
+        :param part: The number of the part to retrieve, indexed from 1.
+        :type part: int
+        :rtype: MessagePart
+        """
+        if not self.is_multipart():
+            raise TypeError
+        try:
+            subpart_dict = self._wrapper.get_subpart_dict(part)
+        except KeyError:
+            raise IndexError
+
+        return MessagePart(
+            subpart_dict, cdocs=self._wrapper.cdocs)
+
+    # Custom methods.
+
+    def get_tags(self):
+        """
+        Get the tags for this message.
+        """
+        return tuple(self._wrapper.fdoc.tags)
+
+
+class Flagsmode(object):
+    """
+    Modes for setting the flags/tags.
+    """
+    APPEND = 1
+    REMOVE = -1
+    SET = 0
+
+
+class MessageCollection(object):
+    """
+    A generic collection of messages. It can be messages sharing the same
+    mailbox, tag, the result of a given query, or just a bunch of ids for
+    master documents.
+
+    Since LEAP Mail is primarily oriented to store mail in Soledad, the default
+    (and, so far, only) implementation of the store is contained in the
+    Soledad Mail Adaptor, which is passed to every collection on creation by
+    the root Account object. If you need to use a different adaptor, change the
+    adaptor class attribute in your Account object.
+
+    Store is a reference to a particular instance of the message store (soledad
+    instance or proxy, for instance).
+    """
+
+    # TODO LIST
+    # [ ] look at IMessageSet methods
+    # [ ] make constructor with a per-instance deferredLock to use on
+    #     creation/deletion?
+    # [ ] instead of a mailbox, we could pass an arbitrary container with
+    #     pointers to different doc_ids (type: foo)
+    # [ ] To guarantee synchronicity of the documents sent together during a
+    #     sync, we could get hold of a deferredLock that inhibits
+    #     synchronization while we are updating (think more about this!)
+    # [ ] review the serveral count_ methods. I think it's better to patch
+    #     server to accept deferreds.
+    # [ ] Use inheritance for the mailbox-collection instead of handling the
+    #     special cases everywhere?
+    # [ ] or maybe a mailbox_only decorator...
+
+    # Account should provide an adaptor instance when creating this collection.
+    adaptor = None
+    store = None
+    messageklass = Message
+
+    _pending_inserts = dict()
+
+    def __init__(self, adaptor, store, mbox_indexer=None, mbox_wrapper=None):
+        """
+        Constructor for a MessageCollection.
+        """
+        self.adaptor = adaptor
+        self.store = store
+
+        # XXX think about what to do when there is no mbox passed to
+        # the initialization. We could still get the MetaMsg by index, instead
+        # of by doc_id. See get_message_by_content_hash
+        self.mbox_indexer = mbox_indexer
+        self.mbox_wrapper = mbox_wrapper
+        self._listeners = set([])
+
+    def is_mailbox_collection(self):
+        """
+        Return True if this collection represents a Mailbox.
+        :rtype: bool
+        """
+        return bool(self.mbox_wrapper)
+
+    @property
+    def mbox_name(self):
+        # TODO raise instead?
+        if self.mbox_wrapper is None:
+            return None
+        return self.mbox_wrapper.mbox
+
+    @property
+    def mbox_uuid(self):
+        # TODO raise instead?
+        if self.mbox_wrapper is None:
+            return None
+        return self.mbox_wrapper.uuid
+
+    def get_mbox_attr(self, attr):
+        if self.mbox_wrapper is None:
+            raise RuntimeError("This is not a mailbox collection")
+        return getattr(self.mbox_wrapper, attr)
+
+    def set_mbox_attr(self, attr, value):
+        if self.mbox_wrapper is None:
+            raise RuntimeError("This is not a mailbox collection")
+        setattr(self.mbox_wrapper, attr, value)
+        return self.mbox_wrapper.update(self.store)
+
+    # Get messages
+
+    def get_message_by_content_hash(self, chash, get_cdocs=False):
+        """
+        Retrieve a message by its content hash.
+        :rtype: Deferred
+        """
+        if not self.is_mailbox_collection():
+            # TODO instead of getting the metamsg by chash, in this case we
+            # should query by (meta) index or use the internal collection of
+            # pointers-to-docs.
+            raise NotImplementedError()
+
+        metamsg_id = _get_mdoc_id(self.mbox_name, chash)
+
+        return self.adaptor.get_msg_from_mdoc_id(
+            self.messageklass, self.store,
+            metamsg_id, get_cdocs=get_cdocs)
+
+    def get_message_by_sequence_number(self, msn, get_cdocs=False):
+        """
+        Retrieve a message by its Message Sequence Number.
+        :rtype: Deferred
+        """
+        def get_uid_for_msn(all_uid):
+            return all_uid[msn - 1]
+        d = self.all_uid_iter()
+        d.addCallback(get_uid_for_msn)
+        d.addCallback(
+            lambda uid: self.get_message_by_uid(
+                uid, get_cdocs=get_cdocs))
+        d.addErrback(lambda f: log.err(f))
+        return d
+
+    def get_message_by_uid(self, uid, absolute=True, get_cdocs=False):
+        """
+        Retrieve a message by its Unique Identifier.
+
+        If this is a Mailbox collection, that is the message UID, unique for a
+        given mailbox, or a relative sequence number depending on the absolute
+        flag. For now, only absolute identifiers are supported.
+        :rtype: Deferred
+        """
+        # TODO deprecate absolute flag, it doesn't make sense UID and
+        # !absolute. use _by_sequence_number instead.
+        if not absolute:
+            raise NotImplementedError("Does not support relative ids yet")
+
+        get_doc_fun = self.mbox_indexer.get_doc_id_from_uid
+
+        def get_msg_from_mdoc_id(doc_id):
+            if doc_id is None:
+                return None
+            return self.adaptor.get_msg_from_mdoc_id(
+                self.messageklass, self.store,
+                doc_id, uid=uid, get_cdocs=get_cdocs)
+
+        def cleanup_and_get_doc_after_pending_insert(result):
+            for key in result:
+                self._pending_inserts.pop(key, None)
+            return get_doc_fun(self.mbox_uuid, uid)
+
+        if not self._pending_inserts:
+            d = get_doc_fun(self.mbox_uuid, uid)
+        else:
+            d = defer.gatherResults(self._pending_inserts.values())
+            d.addCallback(cleanup_and_get_doc_after_pending_insert)
+        d.addCallback(get_msg_from_mdoc_id)
+        return d
+
+    def get_flags_by_uid(self, uid, absolute=True):
+        # TODO use sequence numbers
+        if not absolute:
+            raise NotImplementedError("Does not support relative ids yet")
+
+        def get_flags_from_mdoc_id(doc_id):
+            if doc_id is None:  # XXX needed? or bug?
+                return None
+            return self.adaptor.get_flags_from_mdoc_id(
+                self.store, doc_id)
+
+        def wrap_in_tuple(flags):
+            return (uid, flags)
+
+        d = self.mbox_indexer.get_doc_id_from_uid(self.mbox_uuid, uid)
+        d.addCallback(get_flags_from_mdoc_id)
+        d.addCallback(wrap_in_tuple)
+        return d
+
+    def count(self):
+        """
+        Count the messages in this collection.
+        :return: a Deferred that will fire with the integer for the count.
+        :rtype: Deferred
+        """
+        if not self.is_mailbox_collection():
+            raise NotImplementedError()
+
+        d = self.mbox_indexer.count(self.mbox_uuid)
+        return d
+
+    def count_recent(self):
+        """
+        Count the recent messages in this collection.
+        :return: a Deferred that will fire with the integer for the count.
+        :rtype: Deferred
+        """
+        if not self.is_mailbox_collection():
+            raise NotImplementedError()
+        return self.adaptor.get_count_recent(self.store, self.mbox_uuid)
+
+    def count_unseen(self):
+        """
+        Count the unseen messages in this collection.
+        :return: a Deferred that will fire with the integer for the count.
+        :rtype: Deferred
+        """
+        if not self.is_mailbox_collection():
+            raise NotImplementedError()
+        return self.adaptor.get_count_unseen(self.store, self.mbox_uuid)
+
+    def get_uid_next(self):
+        """
+        Get the next integer beyond the highest UID count for this mailbox.
+
+        :return: a Deferred that will fire with the integer for the next uid.
+        :rtype: Deferred
+        """
+        return self.mbox_indexer.get_next_uid(self.mbox_uuid)
+
+    def get_last_uid(self):
+        """
+        Get the last UID for this mailbox.
+        """
+        return self.mbox_indexer.get_last_uid(self.mbox_uuid)
+
+    def all_uid_iter(self):
+        """
+        Iterator through all the uids for this collection.
+        """
+        return self.mbox_indexer.all_uid_iter(self.mbox_uuid)
+
+    def get_uid_from_msgid(self, msgid):
+        """
+        Return the UID(s) of the matching msg-ids for this mailbox collection.
+        """
+        if not self.is_mailbox_collection():
+            raise NotImplementedError()
+
+        def get_uid(mdoc_id):
+            if not mdoc_id:
+                return None
+            d = self.mbox_indexer.get_uid_from_doc_id(
+                self.mbox_uuid, mdoc_id)
+            return d
+
+        d = self.adaptor.get_mdoc_id_from_msgid(
+            self.store, self.mbox_uuid, msgid)
+        d.addCallback(get_uid)
+        return d
+
+    # Manipulate messages
+
+    def add_msg(self, raw_msg, flags=tuple(), tags=tuple(), date="",
+                notify_just_mdoc=False):
+        """
+        Add a message to this collection.
+
+        :param raw_msg: the raw message
+        :param flags: tuple of flags for this message
+        :param tags: tuple of tags for this message
+        :param date:
+            formatted date, it will be used to retrieve the internal
+            date for this message.  According to the spec, this is NOT the date
+            and time in the RFC-822 header, but rather a date and time that
+            reflects when the message was received.
+        :type date: str
+        :param notify_just_mdoc:
+            boolean passed to the wrapper.create method, to indicate whether
+            we're insterested in being notified right after the mdoc has been
+            written (as it's the first doc to be written, and quite small, this
+            is faster, though potentially unsafe), or on the contrary we want
+            to wait untill all the parts have been written.
+            Used by the imap mailbox implementation to get faster responses.
+            This will be ignored (and set to False) if a heuristic for a Draft
+            message is met, which currently is a specific mozilla header.
+        :type notify_just_mdoc: bool
+
+        :returns: a deferred that will fire with the UID of the inserted
+                  message.
+        :rtype: deferred
+        """
+        # TODO watch out if the use of this method in IMAP COPY/APPEND is
+        # passing the right date.
+        # XXX mdoc ref is a leaky abstraction here. generalize.
+        leap_assert_type(flags, tuple)
+        leap_assert_type(date, str)
+
+        msg = self.adaptor.get_msg_from_string(Message, raw_msg)
+        wrapper = msg.get_wrapper()
+
+        headers = lowerdict(msg.get_headers())
+        moz_draft_hdr = "X-Mozilla-Draft-Info"
+        if moz_draft_hdr.lower() in headers:
+            log.msg("Setting fast notify to False, Draft detected")
+            notify_just_mdoc = False
+
+        if notify_just_mdoc:
+            msgid = headers.get('message-id')
+            if msgid:
+                self._pending_inserts[msgid] = defer.Deferred()
+
+        if not self.is_mailbox_collection():
+            raise NotImplementedError()
+
+        else:
+            mbox_id = self.mbox_uuid
+            wrapper.set_mbox_uuid(mbox_id)
+            wrapper.set_flags(flags)
+            wrapper.set_tags(tags)
+            wrapper.set_date(date)
+
+        def insert_mdoc_id(_, wrapper):
+            doc_id = wrapper.mdoc.doc_id
+            if not doc_id:
+                # --- BUG -----------------------------------------
+                # XXX watch out, sometimes mdoc doesn't have doc_id
+                # but it has future_id. Should be solved already.
+                logger.error("BUG: (please report) Null doc_id for "
+                             "document %s" %
+                             (wrapper.mdoc.serialize(),))
+                return defer.succeed("mdoc_id not inserted")
+                # XXX BUG -----------------------------------------
+
+            # XXX BUG sometimes the table is not yet created,
+            # so workaround is to make sure we always check for it before
+            # inserting the doc. I should debug into the real cause.
+            d = self.mbox_indexer.create_table(self.mbox_uuid)
+            d.addBoth(lambda _: self.mbox_indexer.insert_doc(
+                self.mbox_uuid, doc_id))
+            return d
+
+        d = wrapper.create(
+            self.store,
+            notify_just_mdoc=notify_just_mdoc,
+            pending_inserts_dict=self._pending_inserts)
+        d.addCallback(insert_mdoc_id, wrapper)
+        d.addCallback(self.cb_signal_unread_to_ui)
+        d.addCallback(self.notify_new_to_listeners)
+        d.addErrback(lambda failure: log.err(failure))
+
+        return d
+
+    # Listeners
+
+    def addListener(self, listener):
+        self._listeners.add(listener)
+
+    def removeListener(self, listener):
+        self._listeners.remove(listener)
+
+    def notify_new_to_listeners(self, result):
+        for listener in self._listeners:
+            listener.notify_new()
+        return result
+
+    def cb_signal_unread_to_ui(self, result):
+        """
+        Sends an unread event to ui, passing *only* the number of unread
+        messages if *this* is the inbox. This event is catched, for instance,
+        in the Bitmask client that displays a message with the number of unread
+        mails in the INBOX.
+
+        Used as a callback in several commands.
+
+        :param result: ignored
+        """
+        # TODO it might make sense to modify the event so that
+        # it receives both the mailbox name AND the number of unread messages.
+        if self.mbox_name.lower() == "inbox":
+            d = defer.maybeDeferred(self.count_unseen)
+            d.addCallback(self.__cb_signal_unread_to_ui)
+        return result
+
+    def __cb_signal_unread_to_ui(self, unseen):
+        """
+        Send the unread signal to UI.
+        :param unseen: number of unseen messages.
+        :type unseen: int
+        """
+        # TODO change name of the signal, independent from imap now.
+        emit(catalog.MAIL_UNREAD_MESSAGES, str(unseen))
+
+    def copy_msg(self, msg, new_mbox_uuid):
+        """
+        Copy the message to another collection. (it only makes sense for
+        mailbox collections)
+        """
+        # TODO should CHECK first if the mdoc is present in the mailbox
+        # WITH a Deleted flag... and just simply remove the flag...
+        # Another option is to delete the previous mdoc if it already exists
+        # (so we get a new UID)
+
+        if not self.is_mailbox_collection():
+            raise NotImplementedError()
+
+        def delete_mdoc_entry_and_insert(failure, mbox_uuid, doc_id):
+            d = self.mbox_indexer.delete_doc_by_hash(mbox_uuid, doc_id)
+            d.addCallback(lambda _: self.mbox_indexer.insert_doc(
+                new_mbox_uuid, doc_id))
+            return d
+
+        def insert_copied_mdoc_id(wrapper_new_msg):
+            # XXX FIXME -- since this is already saved, the future_doc_id
+            # should be already copied into the doc_id!
+            # Investigate why we are not receiving the already saved doc_id
+            doc_id = wrapper_new_msg.mdoc.doc_id
+            if not doc_id:
+                doc_id = wrapper_new_msg.mdoc._future_doc_id
+
+            def insert_conditionally(uid, mbox_uuid, doc_id):
+                indexer = self.mbox_indexer
+                if uid:
+                    d = indexer.delete_doc_by_hash(mbox_uuid, doc_id)
+                    d.addCallback(lambda _: indexer.insert_doc(
+                        new_mbox_uuid, doc_id))
+                    return d
+                else:
+                    d = indexer.insert_doc(mbox_uuid, doc_id)
+                    return d
+
+            def log_result(result):
+                return result
+
+            def insert_doc(_, mbox_uuid, doc_id):
+                d = self.mbox_indexer.get_uid_from_doc_id(mbox_uuid, doc_id)
+                d.addCallback(insert_conditionally, mbox_uuid, doc_id)
+                d.addErrback(lambda err: log.failure(err))
+                d.addCallback(log_result)
+                return d
+
+            d = self.mbox_indexer.create_table(new_mbox_uuid)
+            d.addBoth(insert_doc, new_mbox_uuid, doc_id)
+            return d
+
+        wrapper = msg.get_wrapper()
+
+        d = wrapper.copy(self.store, new_mbox_uuid)
+        d.addCallback(insert_copied_mdoc_id)
+        d.addCallback(self.notify_new_to_listeners)
+        return d
+
+    def delete_msg(self, msg):
+        """
+        Delete this message.
+        """
+        wrapper = msg.get_wrapper()
+
+        def delete_mdoc_id(_, wrapper):
+            doc_id = wrapper.mdoc.doc_id
+            return self.mbox_indexer.delete_doc_by_hash(
+                self.mbox_uuid, doc_id)
+        d = wrapper.delete(self.store)
+        d.addCallback(delete_mdoc_id, wrapper)
+        return d
+
+    def delete_all_flagged(self):
+        """
+        Delete all messages flagged as \\Deleted.
+        Used from IMAPMailbox.expunge()
+        """
+        def get_uid_list(hashes):
+            d = []
+            for h in hashes:
+                d.append(self.mbox_indexer.get_uid_from_doc_id(
+                         self.mbox_uuid, h))
+            return defer.gatherResults(d), hashes
+
+        def delete_uid_entries((uids, hashes)):
+            d = []
+            for h in hashes:
+                d.append(self.mbox_indexer.delete_doc_by_hash(
+                         self.mbox_uuid, h))
+
+            def return_uids_when_deleted(ignored):
+                return uids
+
+            all_deleted = defer.gatherResults(d).addCallback(
+                return_uids_when_deleted)
+            return all_deleted
+
+        mdocs_deleted = self.adaptor.del_all_flagged_messages(
+            self.store, self.mbox_uuid)
+        mdocs_deleted.addCallback(get_uid_list)
+        mdocs_deleted.addCallback(delete_uid_entries)
+        mdocs_deleted.addErrback(lambda f: log.err(f))
+        return mdocs_deleted
+
+    # TODO should add a delete-by-uid to collection?
+
+    def delete_all_docs(self):
+        def del_all_uid(uid_list):
+            deferreds = []
+            for uid in uid_list:
+                d = self.get_message_by_uid(uid)
+                d.addCallback(lambda msg: msg.delete())
+                deferreds.append(d)
+            return defer.gatherResults(deferreds)
+
+        d = self.all_uid_iter()
+        d.addCallback(del_all_uid)
+        return d
+
+    def update_flags(self, msg, flags, mode):
+        """
+        Update flags for a given message.
+        """
+        wrapper = msg.get_wrapper()
+        current = wrapper.fdoc.flags
+        newflags = map(str, self._update_flags_or_tags(current, flags, mode))
+        wrapper.fdoc.flags = newflags
+
+        wrapper.fdoc.seen = MessageFlags.SEEN_FLAG in newflags
+        wrapper.fdoc.deleted = MessageFlags.DELETED_FLAG in newflags
+
+        d = self.adaptor.update_msg(self.store, msg)
+        d.addCallback(lambda _: newflags)
+        return d
+
+    def update_tags(self, msg, tags, mode):
+        """
+        Update tags for a given message.
+        """
+        wrapper = msg.get_wrapper()
+        current = wrapper.fdoc.tags
+        newtags = self._update_flags_or_tags(current, tags, mode)
+
+        wrapper.fdoc.tags = newtags
+        d = self.adaptor.update_msg(self.store, msg)
+        d.addCallback(newtags)
+        return d
+
+    def _update_flags_or_tags(self, old, new, mode):
+        if mode == Flagsmode.APPEND:
+            final = list((set(tuple(old) + new)))
+        elif mode == Flagsmode.REMOVE:
+            final = list(set(old).difference(set(new)))
+        elif mode == Flagsmode.SET:
+            final = new
+        return final
+
+
+class Account(object):
+    """
+    Account is the top level abstraction to access collections of messages
+    associated with a LEAP Mail Account.
+
+    It primarily handles creation and access of Mailboxes, which will be the
+    basic collection handled by traditional MUAs, but it can also handle other
+    types of Collections (tag based, for instance).
+
+    leap.mail.imap.IMAPAccount partially proxies methods in this
+    class.
+    """
+
+    # Adaptor is passed to the returned MessageCollections, so if you want to
+    # use a different adaptor this is the place to change it, by subclassing
+    # the Account class.
+
+    adaptor_class = SoledadMailAdaptor
+
+    # This is a mapping to collection instances so that we always
+    # return a reference to them instead of creating new ones. However, being a
+    # dictionary of weakrefs values, they automagically vanish from the dict
+    # when no hard refs is left to them (so they can be garbage collected)
+    # This is important because the different wrappers rely on several
+    # kinds of deferredLocks that are kept as class or instance variables
+    _collection_mapping = weakref.WeakValueDictionary()
+
+    def __init__(self, store, ready_cb=None):
+        self.store = store
+        self.adaptor = self.adaptor_class()
+        self.mbox_indexer = MailboxIndexer(self.store)
+
+        # This flag is only used from the imap service for the moment.
+        # In the future, we should prevent any public method to continue if
+        # this is set to True. Also, it would be good to plug to the
+        # authentication layer.
+        self.session_ended = False
+
+        self.deferred_initialization = defer.Deferred()
+        self._ready_cb = ready_cb
+
+        self._init_d = self._initialize_storage()
+        self._initialize_sync_hooks()
+
+    def _initialize_storage(self):
+
+        def add_mailbox_if_none(mboxes):
+            if not mboxes:
+                return self.add_mailbox(INBOX_NAME)
+
+        def finish_initialization(result):
+            self.deferred_initialization.callback(None)
+            if self._ready_cb is not None:
+                self._ready_cb()
+
+        d = self.adaptor.initialize_store(self.store)
+        d.addCallback(lambda _: self.list_all_mailbox_names())
+        d.addCallback(add_mailbox_if_none)
+        d.addCallback(finish_initialization)
+        return d
+
+    def callWhenReady(self, cb, *args, **kw):
+        """
+        Execute the callback when the initialization of the Account is ready.
+        Note that the callback will receive a first meaningless parameter.
+        """
+        # TODO this should ignore the first parameter explicitely
+        # lambda _: cb(*args, **kw)
+        self.deferred_initialization.addCallback(cb, *args, **kw)
+        return self.deferred_initialization
+
+    # Sync hooks
+
+    def _initialize_sync_hooks(self):
+        soledad_sync_hooks.post_sync_uid_reindexer.set_account(self)
+
+    def _teardown_sync_hooks(self):
+        soledad_sync_hooks.post_sync_uid_reindexer.set_account(None)
+
+    #
+    # Public API Starts
+    #
+
+    def list_all_mailbox_names(self):
+
+        def filter_names(mboxes):
+            return [m.mbox for m in mboxes]
+
+        d = self.get_all_mailboxes()
+        d.addCallback(filter_names)
+        return d
+
+    def get_all_mailboxes(self):
+        d = self.adaptor.get_all_mboxes(self.store)
+        return d
+
+    def add_mailbox(self, name, creation_ts=None):
+
+        if creation_ts is None:
+            # by default, we pass an int value
+            # taken from the current time
+            # we make sure to take enough decimals to get a unique
+            # mailbox-uidvalidity.
+            creation_ts = int(time.time() * 10E2)
+
+        def set_creation_ts(wrapper):
+            wrapper.created = creation_ts
+            d = wrapper.update(self.store)
+            d.addCallback(lambda _: wrapper)
+            return d
+
+        def create_uuid(wrapper):
+            if not wrapper.uuid:
+                wrapper.uuid = str(uuid.uuid4())
+                d = wrapper.update(self.store)
+                d.addCallback(lambda _: wrapper)
+                return d
+            return wrapper
+
+        def create_uid_table_cb(wrapper):
+            d = self.mbox_indexer.create_table(wrapper.uuid)
+            d.addCallback(lambda _: wrapper)
+            return d
+
+        d = self.adaptor.get_or_create_mbox(self.store, name)
+        d.addCallback(set_creation_ts)
+        d.addCallback(create_uuid)
+        d.addCallback(create_uid_table_cb)
+        return d
+
+    def delete_mailbox(self, name):
+
+        def delete_uid_table_cb(wrapper):
+            d = self.mbox_indexer.delete_table(wrapper.uuid)
+            d.addCallback(lambda _: wrapper)
+            return d
+
+        d = self.adaptor.get_or_create_mbox(self.store, name)
+        d.addCallback(delete_uid_table_cb)
+        d.addCallback(
+            lambda wrapper: self.adaptor.delete_mbox(self.store, wrapper))
+        return d
+
+    def rename_mailbox(self, oldname, newname):
+
+        def _rename_mbox(wrapper):
+            wrapper.mbox = newname
+            d = wrapper.update(self.store)
+            d.addCallback(lambda result: wrapper)
+            return d
+
+        d = self.adaptor.get_or_create_mbox(self.store, oldname)
+        d.addCallback(_rename_mbox)
+        return d
+
+    # Get Collections
+
+    def get_collection_by_mailbox(self, name):
+        """
+        :rtype: deferred
+        :return: a deferred that will fire with a MessageCollection
+        """
+        collection = self._collection_mapping.get(name, None)
+        if collection:
+            return defer.succeed(collection)
+
+        # imap select will use this, passing the collection to SoledadMailbox
+        def get_collection_for_mailbox(mbox_wrapper):
+            collection = MessageCollection(
+                self.adaptor, self.store, self.mbox_indexer, mbox_wrapper)
+            self._collection_mapping[name] = collection
+            return collection
+
+        d = self.adaptor.get_or_create_mbox(self.store, name)
+        d.addCallback(get_collection_for_mailbox)
+        return d
+
+    def get_collection_by_docs(self, docs):
+        """
+        :rtype: MessageCollection
+        """
+        # get a collection of docs by a list of doc_id
+        # get.docs(...) --> it should be a generator. does it behave in the
+        # threadpool?
+        raise NotImplementedError()
+
+    def get_collection_by_tag(self, tag):
+        """
+        :rtype: MessageCollection
+        """
+        raise NotImplementedError()
+
+    # Session handling
+
+    def end_session(self):
+        self._teardown_sync_hooks()
+        self.session_ended = True
diff --git a/src/leap/mail/mailbox_indexer.py b/src/leap/mail/mailbox_indexer.py
new file mode 100644
index 0000000..08e5f10
--- /dev/null
+++ b/src/leap/mail/mailbox_indexer.py
@@ -0,0 +1,324 @@
+# -*- coding: utf-8 -*-
+# mailbox_indexer.py
+# Copyright (C) 2014 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+Local tables to store the message Unique Identifiers for a given mailbox.
+"""
+import re
+import uuid
+
+from leap.mail.constants import METAMSGID_RE
+
+
+def _maybe_first_query_item(thing):
+    """
+    Return the first item the returned query result, or None
+    if empty.
+    """
+    try:
+        return thing[0][0]
+    except (TypeError, IndexError):
+        return None
+
+
+class WrongMetaDocIDError(Exception):
+    pass
+
+
+def sanitize(mailbox_uuid):
+    return mailbox_uuid.replace("-", "_")
+
+
+def check_good_uuid(mailbox_uuid):
+    """
+    Check that the passed mailbox identifier is a valid UUID.
+    :param mailbox_uuid: the uuid to check
+    :type mailbox_uuid: str
+    :return: None
+    :raises: AssertionError if a wrong uuid was passed.
+    """
+    try:
+        uuid.UUID(str(mailbox_uuid))
+    except (AttributeError, ValueError):
+        raise AssertionError(
+            "the mbox_id is not a valid uuid: %s" % mailbox_uuid)
+
+
+class MailboxIndexer(object):
+    """
+    This class contains the commands needed to create, modify and alter the
+    local-only UID tables for a given mailbox.
+
+    Its purpouse is to keep a local-only index with the messages in each
+    mailbox, mainly to satisfy the demands of the IMAP specification, but
+    useful too for any effective listing of the messages in a mailbox.
+
+    Since the incoming mail can be processed at any time in any replica, it's
+    preferred not to attempt to maintain a global chronological global index.
+
+    These indexes are Message Attributes needed for the IMAP specification (rfc
+    3501), although they can be useful for other non-imap store
+    implementations.
+    """
+    # The uids are expected to be 32-bits values, but the ROWIDs in sqlite
+    # are 64-bit values. I *don't* think it really matters for any
+    # practical use, but it's good to remmeber we've got that difference going
+    # on.
+
+    store = None
+    table_preffix = "leapmail_uid_"
+
+    def __init__(self, store):
+        self.store = store
+
+    def _query(self, *args, **kw):
+        assert self.store is not None
+        return self.store.raw_sqlcipher_query(*args, **kw)
+
+    def _operation(self, *args, **kw):
+        assert self.store is not None
+        return self.store.raw_sqlcipher_operation(*args, **kw)
+
+    def create_table(self, mailbox_uuid):
+        """
+        Create the UID table for a given mailbox.
+        :param mailbox: the mailbox identifier.
+        :type mailbox: str
+        :rtype: Deferred
+        """
+        check_good_uuid(mailbox_uuid)
+        sql = ("CREATE TABLE if not exists {preffix}{name}( "
+               "uid  INTEGER PRIMARY KEY AUTOINCREMENT, "
+               "hash TEXT UNIQUE NOT NULL)".format(
+                   preffix=self.table_preffix, name=sanitize(mailbox_uuid)))
+        return self._operation(sql)
+
+    def delete_table(self, mailbox_uuid):
+        """
+        Delete the UID table for a given mailbox.
+        :param mailbox: the mailbox name
+        :type mailbox: str
+        :rtype: Deferred
+        """
+        check_good_uuid(mailbox_uuid)
+        sql = ("DROP TABLE if exists {preffix}{name}".format(
+            preffix=self.table_preffix, name=sanitize(mailbox_uuid)))
+        return self._operation(sql)
+
+    def insert_doc(self, mailbox_uuid, doc_id):
+        """
+        Insert the doc_id for a MetaMsg in the UID table for a given mailbox.
+
+        The doc_id must be in the format:
+
+            M-<mailbox>-<content-hash-of-the-message>
+
+        :param mailbox: the mailbox name
+        :type mailbox: str
+        :param doc_id: the doc_id for the MetaMsg
+        :type doc_id: str
+        :return: a deferred that will fire with the uid of the newly inserted
+                 document.
+        :rtype: Deferred
+        """
+        check_good_uuid(mailbox_uuid)
+        assert doc_id
+        mailbox_uuid = mailbox_uuid.replace('-', '_')
+
+        if not re.findall(METAMSGID_RE.format(mbox_uuid=mailbox_uuid), doc_id):
+            raise WrongMetaDocIDError("Wrong format for the MetaMsg doc_id")
+
+        def get_rowid(result):
+            return _maybe_first_query_item(result)
+
+        sql = ("INSERT INTO {preffix}{name} VALUES ("
+               "NULL, ?)".format(
+                   preffix=self.table_preffix, name=sanitize(mailbox_uuid)))
+        values = (doc_id,)
+
+        sql_last = ("SELECT MAX(rowid) FROM {preffix}{name} "
+                    "LIMIT 1;").format(
+            preffix=self.table_preffix, name=sanitize(mailbox_uuid))
+
+        d = self._operation(sql, values)
+        d.addCallback(lambda _: self._query(sql_last))
+        d.addCallback(get_rowid)
+        d.addErrback(lambda f: f.printTraceback())
+        return d
+
+    def delete_doc_by_uid(self, mailbox_uuid, uid):
+        """
+        Delete the entry for a MetaMsg in the UID table for a given mailbox.
+
+        :param mailbox_uuid: the mailbox uuid
+        :type mailbox: str
+        :param uid: the UID of the message.
+        :type uid: int
+        :rtype: Deferred
+        """
+        check_good_uuid(mailbox_uuid)
+        assert uid
+        sql = ("DELETE FROM {preffix}{name} "
+               "WHERE uid=?".format(
+                   preffix=self.table_preffix, name=sanitize(mailbox_uuid)))
+        values = (uid,)
+        return self._query(sql, values)
+
+    def delete_doc_by_hash(self, mailbox_uuid, doc_id):
+        """
+        Delete the entry for a MetaMsg in the UID table for a given mailbox.
+
+        The doc_id must be in the format:
+
+            M-<mailbox_uuid>-<content-hash-of-the-message>
+
+        :param mailbox_uuid: the mailbox uuid
+        :type mailbox: str
+        :param doc_id: the doc_id for the MetaMsg
+        :type doc_id: str
+        :return: a deferred that will fire when the deletion has succed.
+        :rtype: Deferred
+        """
+        check_good_uuid(mailbox_uuid)
+        assert doc_id
+        sql = ("DELETE FROM {preffix}{name} "
+               "WHERE hash=?".format(
+                   preffix=self.table_preffix, name=sanitize(mailbox_uuid)))
+        values = (doc_id,)
+        return self._query(sql, values)
+
+    def get_doc_id_from_uid(self, mailbox_uuid, uid):
+        """
+        Get the doc_id for a MetaMsg in the UID table for a given mailbox.
+
+        :param mailbox_uuid: the mailbox uuid
+        :type mailbox: str
+        :param uid: the uid for the MetaMsg for this mailbox
+        :type uid: int
+        :rtype: Deferred
+        """
+        check_good_uuid(mailbox_uuid)
+        mailbox_uuid = mailbox_uuid.replace('-', '_')
+
+        def get_hash(result):
+            return _maybe_first_query_item(result)
+
+        sql = ("SELECT hash from {preffix}{name} "
+               "WHERE uid=?".format(
+                   preffix=self.table_preffix, name=sanitize(mailbox_uuid)))
+        values = (uid,)
+        d = self._query(sql, values)
+        d.addCallback(get_hash)
+        return d
+
+    def get_uid_from_doc_id(self, mailbox_uuid, doc_id):
+        check_good_uuid(mailbox_uuid)
+        mailbox_uuid = mailbox_uuid.replace('-', '_')
+
+        def get_uid(result):
+            return _maybe_first_query_item(result)
+
+        sql = ("SELECT uid from {preffix}{name} "
+               "WHERE hash=?".format(
+                   preffix=self.table_preffix, name=sanitize(mailbox_uuid)))
+        values = (doc_id,)
+        d = self._query(sql, values)
+        d.addCallback(get_uid)
+        return d
+
+    def get_doc_ids_from_uids(self, mailbox_uuid, uids):
+        # For IMAP relative numbering /sequences.
+        # XXX dereference the range (n,*)
+        raise NotImplementedError()
+
+    def count(self, mailbox_uuid):
+        """
+        Get the number of entries in the UID table for a given mailbox.
+
+        :param mailbox_uuid: the mailbox uuid
+        :type mailbox_uuid: str
+        :return: a deferred that will fire with an integer returning the count.
+        :rtype: Deferred
+        """
+        check_good_uuid(mailbox_uuid)
+
+        def get_count(result):
+            return _maybe_first_query_item(result)
+
+        sql = ("SELECT Count(*) FROM {preffix}{name};".format(
+            preffix=self.table_preffix, name=sanitize(mailbox_uuid)))
+        d = self._query(sql)
+        d.addCallback(get_count)
+        d.addErrback(lambda _: 0)
+        return d
+
+    def get_next_uid(self, mailbox_uuid):
+        """
+        Get the next integer beyond the highest UID count for a given mailbox.
+
+        This is expected by the IMAP implementation. There are no guarantees
+        that a document to be inserted in the future gets the returned UID: the
+        only thing that can be assured is that it will be equal or greater than
+        the value returned.
+
+        :param mailbox_uuid: the mailbox uuid
+        :type mailbox: str
+        :return: a deferred that will fire with an integer returning the next
+                 uid.
+        :rtype: Deferred
+        """
+        check_good_uuid(mailbox_uuid)
+        d = self.get_last_uid(mailbox_uuid)
+        d.addCallback(lambda uid: uid + 1)
+        return d
+
+    def get_last_uid(self, mailbox_uuid):
+        """
+        Get the highest UID for a given mailbox.
+        """
+        check_good_uuid(mailbox_uuid)
+        sql = ("SELECT MAX(rowid) FROM {preffix}{name} "
+               "LIMIT 1;").format(
+            preffix=self.table_preffix, name=sanitize(mailbox_uuid))
+
+        def getit(result):
+            rowid = _maybe_first_query_item(result)
+            if not rowid:
+                rowid = 0
+            return rowid
+
+        d = self._query(sql)
+        d.addCallback(getit)
+        return d
+
+    def all_uid_iter(self, mailbox_uuid):
+        """
+        Get a sequence of all the uids in this mailbox.
+
+        :param mailbox_uuid: the mailbox uuid
+        :type mailbox_uuid: str
+        """
+        check_good_uuid(mailbox_uuid)
+
+        sql = ("SELECT uid from {preffix}{name} ").format(
+            preffix=self.table_preffix, name=sanitize(mailbox_uuid))
+
+        def get_results(result):
+            return [x[0] for x in result]
+
+        d = self._query(sql)
+        d.addCallback(get_results)
+        return d
diff --git a/src/leap/mail/messageflow.py b/src/leap/mail/messageflow.py
deleted file mode 100644
index c8f224c..0000000
--- a/src/leap/mail/messageflow.py
+++ /dev/null
@@ -1,200 +0,0 @@
-# -*- coding: utf-8 -*-
-# messageflow.py
-# Copyright (C) 2013 LEAP
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-"""
-Message Producers and Consumers for flow control.
-"""
-import Queue
-
-from twisted.internet.task import LoopingCall
-
-from zope.interface import Interface, implements
-
-
-class IMessageConsumer(Interface):
-    """
-    I consume messages from a queue.
-    """
-
-    def consume(self, queue):
-        """
-        Consumes the passed item.
-
-        :param item: a queue where we put the object to be consumed.
-        :type item: object
-        """
-        # TODO we could add an optional type to be passed
-        # for doing type check.
-
-        # TODO in case of errors, we could return the object to
-        # the queue, maybe wrapped in an object with a retries attribute.
-
-
-class IMessageProducer(Interface):
-    """
-    I produce messages and put them in a store to be consumed by other
-    entities.
-    """
-
-    def push(self, item, state=None):
-        """
-        Push a new item in the queue.
-        """
-
-    def start(self):
-        """
-        Start producing items.
-        """
-
-    def stop(self):
-        """
-        Stop producing items.
-        """
-
-    def flush(self):
-        """
-        Flush queued messages to consumer.
-        """
-
-
-class DummyMsgConsumer(object):
-
-    implements(IMessageConsumer)
-
-    def consume(self, queue):
-        """
-        Just prints the passed item.
-        """
-        if not queue.empty():
-            print "got item %s" % queue.get()
-
-
-class MessageProducer(object):
-    """
-    A Producer class that we can use to temporarily buffer the production
-    of messages so that different objects can consume them.
-
-    This is useful for serializing the consumption of the messages stream
-    in the case of an slow resource (db), or for returning early from a
-    deferred chain and leave further processing detached from the calling loop,
-    as in the case of smtp.
-    """
-    implements(IMessageProducer)
-
-    # TODO this can be seen as a first step towards properly implementing
-    # components that implement IPushProducer / IConsumer  interfaces.
-    # However, I need to think more about how to pause the streaming.
-    # In any case, the differential rate between message production
-    # and consumption is not likely (?) to consume huge amounts of memory in
-    # our current settings, so the need to pause the stream is not urgent now.
-
-    # TODO use enum
-    STATE_NEW = 1
-    STATE_DIRTY = 2
-
-    def __init__(self, consumer, queue=Queue.Queue, period=1):
-        """
-        Initializes the MessageProducer
-
-        :param consumer: an instance of a IMessageConsumer that will consume
-                         the new messages.
-        :param queue: any queue implementation to be used as the temporary
-                      buffer for new items. Default is a FIFO Queue.
-        :param period: the period to check for new items, in seconds.
-        """
-        # XXX should assert it implements IConsumer / IMailConsumer
-        # it should implement a `consume` method
-        self._consumer = consumer
-
-        self._queue_new = queue()
-        self._queue_dirty = queue()
-        self._period = period
-
-        self._loop = LoopingCall(self._check_for_new)
-
-    # private methods
-
-    def _check_for_new(self):
-        """
-        Check for new items in the internal queue, and calls the consume
-        method in the consumer.
-
-        If the queue is found empty, the loop is stopped. It will be started
-        again after the addition of new items.
-        """
-        self._consumer.consume((self._queue_new, self._queue_dirty))
-        if self.is_queue_empty():
-            self.stop()
-
-    def is_queue_empty(self):
-        """
-        Return True if queue is empty, False otherwise.
-        """
-        new = self._queue_new
-        dirty = self._queue_dirty
-        return new.empty() and dirty.empty()
-
-    # public methods: IMessageProducer
-
-    def push(self, item, state=None):
-        """
-        Push a new item in the queue.
-
-        If the queue was empty, we will start the loop again.
-        """
-        # XXX this might raise if the queue does not accept any new
-        # items. what to do then?
-        queue = self._queue_new
-
-        if state == self.STATE_NEW:
-            queue = self._queue_new
-        if state == self.STATE_DIRTY:
-            queue = self._queue_dirty
-
-        queue.put(item)
-        self.start()
-
-    def start(self):
-        """
-        Start polling for new items.
-        """
-        if not self._loop.running:
-            self._loop.start(self._period, now=True)
-
-    def stop(self):
-        """
-        Stop polling for new items.
-        """
-        if self._loop.running:
-            self._loop.stop()
-
-    def flush(self):
-        """
-        Flush queued messages to consumer.
-        """
-        self._check_for_new()
-
-
-if __name__ == "__main__":
-    from twisted.internet import reactor
-    producer = MessageProducer(DummyMsgConsumer())
-    producer.start()
-
-    for delay, item in ((2, 1), (3, 2), (4, 3),
-                        (6, 4), (7, 5), (8, 6), (8.2, 7),
-                        (15, 'a'), (16, 'b'), (17, 'c')):
-        reactor.callLater(delay, producer.put, item)
-    reactor.run()
diff --git a/src/leap/mail/outgoing/__init__.py b/src/leap/mail/outgoing/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/src/leap/mail/outgoing/__init__.py
diff --git a/src/leap/mail/outgoing/service.py b/src/leap/mail/outgoing/service.py
new file mode 100644
index 0000000..838a908
--- /dev/null
+++ b/src/leap/mail/outgoing/service.py
@@ -0,0 +1,467 @@
+# -*- coding: utf-8 -*-
+# outgoing/service.py
+# Copyright (C) 2013-2015 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+import re
+from StringIO import StringIO
+from copy import deepcopy
+from email.parser import Parser
+from email.mime.application import MIMEApplication
+from email.mime.multipart import MIMEMultipart
+from email.mime.text import MIMEText
+
+from OpenSSL import SSL
+
+from twisted.mail import smtp
+from twisted.internet import reactor
+from twisted.internet import defer
+from twisted.protocols.amp import ssl
+from twisted.python import log
+
+from leap.common.check import leap_assert_type, leap_assert
+from leap.common.events import emit, catalog
+from leap.keymanager.openpgp import OpenPGPKey
+from leap.keymanager.errors import KeyNotFound, KeyAddressMismatch
+from leap.mail import __version__
+from leap.mail.utils import validate_address
+from leap.mail.smtp.rfc3156 import MultipartEncrypted
+from leap.mail.smtp.rfc3156 import MultipartSigned
+from leap.mail.smtp.rfc3156 import encode_base64_rec
+from leap.mail.smtp.rfc3156 import RFC3156CompliantGenerator
+from leap.mail.smtp.rfc3156 import PGPSignature
+from leap.mail.smtp.rfc3156 import PGPEncrypted
+
+# TODO
+# [ ] rename this module to something else, service should be the implementor
+#     of IService
+
+
+class SSLContextFactory(ssl.ClientContextFactory):
+    def __init__(self, cert, key):
+        self.cert = cert
+        self.key = key
+
+    def getContext(self):
+        # FIXME -- we should use sslv23 to allow for tlsv1.2
+        # and, if possible, explicitely disable sslv3 clientside.
+        # Servers should avoid sslv3
+        self.method = SSL.TLSv1_METHOD  # SSLv23_METHOD
+        ctx = ssl.ClientContextFactory.getContext(self)
+        ctx.use_certificate_file(self.cert)
+        ctx.use_privatekey_file(self.key)
+        return ctx
+
+
+class OutgoingMail:
+    """
+    A service for handling encrypted outgoing mail.
+    """
+
+    def __init__(self, from_address, keymanager, cert, key, host, port):
+        """
+        Initialize the mail service.
+
+        :param from_address: The sender address.
+        :type from_address: str
+        :param keymanager: A KeyManager for retrieving recipient's keys.
+        :type keymanager: leap.common.keymanager.KeyManager
+        :param cert: The client certificate for SSL authentication.
+        :type cert: str
+        :param key: The client private key for SSL authentication.
+        :type key: str
+        :param host: The hostname of the remote SMTP server.
+        :type host: str
+        :param port: The port of the remote SMTP server.
+        :type port: int
+        """
+
+        # assert params
+        leap_assert_type(from_address, str)
+        leap_assert('@' in from_address)
+
+        # XXX it can be a zope.proxy too
+        # leap_assert_type(keymanager, KeyManager)
+
+        leap_assert_type(host, str)
+        leap_assert(host != '')
+        leap_assert_type(port, int)
+        leap_assert(port is not 0)
+        leap_assert_type(cert, unicode)
+        leap_assert(cert != '')
+        leap_assert_type(key, unicode)
+        leap_assert(key != '')
+
+        self._port = port
+        self._host = host
+        self._key = key
+        self._cert = cert
+        self._from_address = from_address
+        self._keymanager = keymanager
+
+    def send_message(self, raw, recipient):
+        """
+        Sends a message to a recipient. Maybe encrypts and signs.
+
+        :param raw: The raw message
+        :type raw: str
+        :param recipient: The recipient for the message
+        :type recipient: smtp.User
+        :return: a deferred which delivers the message when fired
+        """
+        d = self._maybe_encrypt_and_sign(raw, recipient)
+        d.addCallback(self._route_msg)
+        d.addErrback(self.sendError)
+        return d
+
+    def sendSuccess(self, smtp_sender_result):
+        """
+        Callback for a successful send.
+
+        :param smtp_sender_result: The result from the ESMTPSender from
+                                   _route_msg
+        :type smtp_sender_result: tuple(int, list(tuple))
+        """
+        dest_addrstr = smtp_sender_result[1][0][0]
+        log.msg('Message sent to %s' % dest_addrstr)
+        emit(catalog.SMTP_SEND_MESSAGE_SUCCESS, dest_addrstr)
+
+    def sendError(self, failure):
+        """
+        Callback for an unsuccessfull send.
+
+        :param e: The result from the last errback.
+        :type e: anything
+        """
+        # XXX: need to get the address from the exception to send signal
+        # emit(catalog.SMTP_SEND_MESSAGE_ERROR, self._user.dest.addrstr)
+        err = failure.value
+        log.err(err)
+        raise err
+
+    def _route_msg(self, encrypt_and_sign_result):
+        """
+        Sends the msg using the ESMTPSenderFactory.
+
+        :param encrypt_and_sign_result: A tuple containing the 'maybe'
+                                        encrypted message and the recipient
+        :type encrypt_and_sign_result: tuple
+        """
+        message, recipient = encrypt_and_sign_result
+        log.msg("Connecting to SMTP server %s:%s" % (self._host, self._port))
+        msg = message.as_string(False)
+
+        # we construct a defer to pass to the ESMTPSenderFactory
+        d = defer.Deferred()
+        d.addCallbacks(self.sendSuccess, self.sendError)
+        # we don't pass an ssl context factory to the ESMTPSenderFactory
+        # because ssl will be handled by reactor.connectSSL() below.
+        factory = smtp.ESMTPSenderFactory(
+            "",  # username is blank, no client auth here
+            "",  # password is blank, no client auth here
+            self._from_address,
+            recipient.dest.addrstr,
+            StringIO(msg),
+            d,
+            heloFallback=True,
+            requireAuthentication=False,
+            requireTransportSecurity=True)
+        factory.domain = __version__
+        emit(catalog.SMTP_SEND_MESSAGE_START, recipient.dest.addrstr)
+        reactor.connectSSL(
+            self._host, self._port, factory,
+            contextFactory=SSLContextFactory(self._cert, self._key))
+
+    def _maybe_encrypt_and_sign(self, raw, recipient):
+        """
+        Attempt to encrypt and sign the outgoing message.
+
+        The behaviour of this method depends on:
+
+            1. the original message's content-type, and
+            2. the availability of the recipient's public key.
+
+        If the original message's content-type is "multipart/encrypted", then
+        the original message is not altered. For any other content-type, the
+        method attempts to fetch the recipient's public key. If the
+        recipient's public key is available, the message is encrypted and
+        signed; otherwise it is only signed.
+
+        Note that, if the C{encrypted_only} configuration is set to True and
+        the recipient's public key is not available, then the recipient
+        address would have been rejected in SMTPDelivery.validateTo().
+
+        The following table summarizes the overall behaviour of the gateway:
+
+        +---------------------------------------------------+----------------+
+        | content-type        | rcpt pubkey | enforce encr. | action         |
+        +---------------------+-------------+---------------+----------------+
+        | multipart/encrypted | any         | any           | pass           |
+        | other               | available   | any           | encrypt + sign |
+        | other               | unavailable | yes           | reject         |
+        | other               | unavailable | no            | sign           |
+        +---------------------+-------------+---------------+----------------+
+
+        :param raw: The raw message
+        :type raw: str
+        :param recipient: The recipient for the message
+        :type: recipient: smtp.User
+
+        :return: A Deferred that will be fired with a MIMEMultipart message
+                 and the original recipient Message
+        :rtype: Deferred
+        """
+        # pass if the original message's content-type is "multipart/encrypted"
+        origmsg = Parser().parsestr(raw)
+
+        if origmsg.get_content_type() == 'multipart/encrypted':
+            return defer.success((origmsg, recipient))
+
+        from_address = validate_address(self._from_address)
+        username, domain = from_address.split('@')
+        to_address = validate_address(recipient.dest.addrstr)
+
+        def maybe_encrypt_and_sign(message):
+            d = self._encrypt_and_sign(message, to_address, from_address)
+            d.addCallbacks(signal_encrypt_sign,
+                           if_key_not_found_send_unencrypted,
+                           errbackArgs=(message,))
+            return d
+
+        def signal_encrypt_sign(newmsg):
+            emit(catalog.SMTP_END_ENCRYPT_AND_SIGN,
+                 "%s,%s" % (self._from_address, to_address))
+            return newmsg, recipient
+
+        def if_key_not_found_send_unencrypted(failure, message):
+            failure.trap(KeyNotFound, KeyAddressMismatch)
+
+            log.msg('Will send unencrypted message to %s.' % to_address)
+            emit(catalog.SMTP_START_SIGN, self._from_address)
+            d = self._sign(message, from_address)
+            d.addCallback(signal_sign)
+            return d
+
+        def signal_sign(newmsg):
+            emit(catalog.SMTP_END_SIGN, self._from_address)
+            return newmsg, recipient
+
+        log.msg("Will encrypt the message with %s and sign with %s."
+                % (to_address, from_address))
+        emit(catalog.SMTP_START_ENCRYPT_AND_SIGN,
+             "%s,%s" % (self._from_address, to_address))
+        d = self._maybe_attach_key(origmsg, from_address, to_address)
+        d.addCallback(maybe_encrypt_and_sign)
+        return d
+
+    def _maybe_attach_key(self, origmsg, from_address, to_address):
+        filename = "%s-email-key.asc" % (from_address,)
+
+        def attach_if_address_hasnt_encrypted(to_key):
+            # if the sign_used flag is true that means that we got an encrypted
+            # email from this address, because we conly check signatures on
+            # encrypted emails. In this case we don't attach.
+            # XXX: this might not be true some time in the future
+            if to_key.sign_used:
+                return origmsg
+            return get_key_and_attach(None)
+
+        def get_key_and_attach(_):
+            d = self._keymanager.get_key(from_address, OpenPGPKey,
+                                         fetch_remote=False)
+            d.addCallback(attach_key)
+            return d
+
+        def attach_key(from_key):
+            msg = origmsg
+            if not origmsg.is_multipart():
+                msg = MIMEMultipart()
+                for h, v in origmsg.items():
+                    msg.add_header(h, v)
+                msg.attach(MIMEText(origmsg.get_payload()))
+
+            keymsg = MIMEApplication(from_key.key_data, _subtype='pgp-keys',
+                                     _encoder=lambda x: x)
+            keymsg.add_header('content-disposition', 'attachment',
+                              filename=filename)
+            msg.attach(keymsg)
+            return msg
+
+        d = self._keymanager.get_key(to_address, OpenPGPKey,
+                                     fetch_remote=False)
+        d.addCallbacks(attach_if_address_hasnt_encrypted, get_key_and_attach)
+        d.addErrback(lambda _: origmsg)
+        return d
+
+    def _encrypt_and_sign(self, origmsg, encrypt_address, sign_address):
+        """
+        Create an RFC 3156 compliang PGP encrypted and signed message using
+        C{encrypt_address} to encrypt and C{sign_address} to sign.
+
+        :param origmsg: The original message
+        :type origmsg: email.message.Message
+        :param encrypt_address: The address used to encrypt the message.
+        :type encrypt_address: str
+        :param sign_address: The address used to sign the message.
+        :type sign_address: str
+
+        :return: A Deferred with the MultipartEncrypted message
+        :rtype: Deferred
+        """
+        # create new multipart/encrypted message with 'pgp-encrypted' protocol
+
+        def encrypt(res):
+            newmsg, origmsg = res
+            d = self._keymanager.encrypt(
+                origmsg.as_string(unixfrom=False),
+                encrypt_address, OpenPGPKey, sign=sign_address)
+            d.addCallback(lambda encstr: (newmsg, encstr))
+            return d
+
+        def create_encrypted_message(res):
+            newmsg, encstr = res
+            encmsg = MIMEApplication(
+                encstr, _subtype='octet-stream', _encoder=lambda x: x)
+            encmsg.add_header('content-disposition', 'attachment',
+                              filename='msg.asc')
+            # create meta message
+            metamsg = PGPEncrypted()
+            metamsg.add_header('Content-Disposition', 'attachment')
+            # attach pgp message parts to new message
+            newmsg.attach(metamsg)
+            newmsg.attach(encmsg)
+            return newmsg
+
+        d = self._fix_headers(
+            origmsg,
+            MultipartEncrypted('application/pgp-encrypted'),
+            sign_address)
+        d.addCallback(encrypt)
+        d.addCallback(create_encrypted_message)
+        return d
+
+    def _sign(self, origmsg, sign_address):
+        """
+        Create an RFC 3156 compliant PGP signed MIME message using
+        C{sign_address}.
+
+        :param origmsg: The original message
+        :type origmsg: email.message.Message
+        :param sign_address: The address used to sign the message.
+        :type sign_address: str
+
+        :return: A Deferred with the MultipartSigned message.
+        :rtype: Deferred
+        """
+        # apply base64 content-transfer-encoding
+        encode_base64_rec(origmsg)
+        # get message text with headers and replace \n for \r\n
+        fp = StringIO()
+        g = RFC3156CompliantGenerator(
+            fp, mangle_from_=False, maxheaderlen=76)
+        g.flatten(origmsg)
+        msgtext = re.sub('\r?\n', '\r\n', fp.getvalue())
+        # make sure signed message ends with \r\n as per OpenPGP stantard.
+        if origmsg.is_multipart():
+            if not msgtext.endswith("\r\n"):
+                msgtext += "\r\n"
+
+        def create_signed_message(res):
+            (msg, _), signature = res
+            sigmsg = PGPSignature(signature)
+            # attach original message and signature to new message
+            msg.attach(origmsg)
+            msg.attach(sigmsg)
+            return msg
+
+        dh = self._fix_headers(
+            origmsg,
+            MultipartSigned('application/pgp-signature', 'pgp-sha512'),
+            sign_address)
+        ds = self._keymanager.sign(
+            msgtext, sign_address, OpenPGPKey, digest_algo='SHA512',
+            clearsign=False, detach=True, binary=False)
+        d = defer.gatherResults([dh, ds])
+        d.addCallback(create_signed_message)
+        return d
+
+    def _fix_headers(self, msg, newmsg, sign_address):
+        """
+        Move some headers from C{origmsg} to C{newmsg}, delete unwanted
+        headers from C{origmsg} and add new headers to C{newms}.
+
+        Outgoing messages are either encrypted and signed or just signed
+        before being sent. Because of that, they are packed inside new
+        messages and some manipulation has to be made on their headers.
+
+        Allowed headers for passing through:
+
+            - From
+            - Date
+            - To
+            - Subject
+            - Reply-To
+            - References
+            - In-Reply-To
+            - Cc
+
+        Headers to be added:
+
+            - Message-ID (i.e. should not use origmsg's Message-Id)
+            - Received (this is added automatically by twisted smtp API)
+            - OpenPGP (see #4447)
+
+        Headers to be deleted:
+
+            - User-Agent
+
+        :param msg: The original message.
+        :type msg: email.message.Message
+        :param newmsg: The new message being created.
+        :type newmsg: email.message.Message
+        :param sign_address: The address used to sign C{newmsg}
+        :type sign_address: str
+
+        :return: A Deferred with a touple:
+                 (new Message with the unencrypted headers,
+                  original Message with headers removed)
+        :rtype: Deferred
+        """
+        origmsg = deepcopy(msg)
+        # move headers from origmsg to newmsg
+        headers = origmsg.items()
+        passthrough = [
+            'from', 'date', 'to', 'subject', 'reply-to', 'references',
+            'in-reply-to', 'cc'
+        ]
+        headers = filter(lambda x: x[0].lower() in passthrough, headers)
+        for hkey, hval in headers:
+            newmsg.add_header(hkey, hval)
+            del (origmsg[hkey])
+        # add a new message-id to newmsg
+        newmsg.add_header('Message-Id', smtp.messageid())
+        # delete user-agent from origmsg
+        del (origmsg['user-agent'])
+
+        def add_openpgp_header(signkey):
+            username, domain = sign_address.split('@')
+            newmsg.add_header(
+                'OpenPGP', 'id=%s' % signkey.key_id,
+                url='https://%s/key/%s' % (domain, username),
+                preference='signencrypt')
+            return newmsg, origmsg
+
+        d = self._keymanager.get_key(sign_address, OpenPGPKey, private=True)
+        d.addCallback(add_openpgp_header)
+        return d
diff --git a/src/leap/mail/outgoing/tests/__init__.py b/src/leap/mail/outgoing/tests/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/src/leap/mail/outgoing/tests/__init__.py
diff --git a/src/leap/mail/outgoing/tests/test_outgoing.py b/src/leap/mail/outgoing/tests/test_outgoing.py
new file mode 100644
index 0000000..2376da9
--- /dev/null
+++ b/src/leap/mail/outgoing/tests/test_outgoing.py
@@ -0,0 +1,256 @@
+# -*- coding: utf-8 -*-
+# test_gateway.py
+# Copyright (C) 2013 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+
+"""
+SMTP gateway tests.
+"""
+
+import re
+from StringIO import StringIO
+from email.parser import Parser
+from datetime import datetime
+from twisted.internet.defer import fail
+from twisted.mail.smtp import User
+
+from mock import Mock
+
+from leap.mail.smtp.gateway import SMTPFactory
+from leap.mail.smtp.rfc3156 import RFC3156CompliantGenerator
+from leap.mail.outgoing.service import OutgoingMail
+from leap.mail.tests import (
+    TestCaseWithKeyManager,
+    ADDRESS,
+    ADDRESS_2,
+    PUBLIC_KEY_2,
+)
+from leap.keymanager import openpgp, errors
+
+
+BEGIN_PUBLIC_KEY = "-----BEGIN PGP PUBLIC KEY BLOCK-----"
+
+
+class TestOutgoingMail(TestCaseWithKeyManager):
+    EMAIL_DATA = ['HELO gateway.leap.se',
+                  'MAIL FROM: <%s>' % ADDRESS_2,
+                  'RCPT TO: <%s>' % ADDRESS,
+                  'DATA',
+                  'From: User <%s>' % ADDRESS_2,
+                  'To: Leap <%s>' % ADDRESS,
+                  'Date: ' + datetime.now().strftime('%c'),
+                  'Subject: test message',
+                  '',
+                  'This is a secret message.',
+                  'Yours,',
+                  'A.',
+                  '',
+                  '.',
+                  'QUIT']
+
+    def setUp(self):
+        self.lines = [line for line in self.EMAIL_DATA[4:12]]
+        self.lines.append('')  # add a trailing newline
+        self.raw = '\r\n'.join(self.lines)
+        self.expected_body = '\r\n'.join(self.EMAIL_DATA[9:12]) + "\r\n"
+        self.fromAddr = ADDRESS_2
+
+        def init_outgoing_and_proto(_):
+            self.outgoing_mail = OutgoingMail(
+                self.fromAddr, self._km, self._config['cert'],
+                self._config['key'], self._config['host'],
+                self._config['port'])
+            self.proto = SMTPFactory(
+                u'anotheruser@leap.se',
+                self._km,
+                self._config['encrypted_only'],
+                self.outgoing_mail).buildProtocol(('127.0.0.1', 0))
+            self.dest = User(ADDRESS, 'gateway.leap.se', self.proto, ADDRESS_2)
+
+        d = TestCaseWithKeyManager.setUp(self)
+        d.addCallback(init_outgoing_and_proto)
+        return d
+
+    def test_message_encrypt(self):
+        """
+        Test if message gets encrypted to destination email.
+        """
+        def check_decryption(res):
+            decrypted, _ = res
+            self.assertEqual(
+                '\n' + self.expected_body,
+                decrypted,
+                'Decrypted text differs from plaintext.')
+
+        d = self._set_sign_used(ADDRESS)
+        d.addCallback(
+            lambda _:
+            self.outgoing_mail._maybe_encrypt_and_sign(self.raw, self.dest))
+        d.addCallback(self._assert_encrypted)
+        d.addCallback(lambda message: self._km.decrypt(
+            message.get_payload(1).get_payload(), ADDRESS, openpgp.OpenPGPKey))
+        d.addCallback(check_decryption)
+        return d
+
+    def test_message_encrypt_sign(self):
+        """
+        Test if message gets encrypted to destination email and signed with
+        sender key.
+        '"""
+        def check_decryption_and_verify(res):
+            decrypted, signkey = res
+            self.assertEqual(
+                '\n' + self.expected_body,
+                decrypted,
+                'Decrypted text differs from plaintext.')
+            self.assertTrue(ADDRESS_2 in signkey.address,
+                            "Verification failed")
+
+        d = self._set_sign_used(ADDRESS)
+        d.addCallback(
+            lambda _:
+            self.outgoing_mail._maybe_encrypt_and_sign(self.raw, self.dest))
+        d.addCallback(self._assert_encrypted)
+        d.addCallback(lambda message: self._km.decrypt(
+            message.get_payload(1).get_payload(), ADDRESS, openpgp.OpenPGPKey,
+            verify=ADDRESS_2))
+        d.addCallback(check_decryption_and_verify)
+        return d
+
+    def test_message_sign(self):
+        """
+        Test if message is signed with sender key.
+        """
+        # mock the key fetching
+        self._km._fetch_keys_from_server = Mock(
+            return_value=fail(errors.KeyNotFound()))
+        recipient = User('ihavenopubkey@nonleap.se',
+                         'gateway.leap.se', self.proto, ADDRESS)
+        self.outgoing_mail = OutgoingMail(
+            self.fromAddr, self._km, self._config['cert'], self._config['key'],
+            self._config['host'], self._config['port'])
+
+        def check_signed(res):
+            message, _ = res
+            self.assertTrue('Content-Type' in message)
+            self.assertEqual('multipart/signed', message.get_content_type())
+            self.assertEqual('application/pgp-signature',
+                             message.get_param('protocol'))
+            self.assertEqual('pgp-sha512', message.get_param('micalg'))
+            # assert content of message
+            body = (message.get_payload(0)
+                           .get_payload(0)
+                           .get_payload(decode=True))
+            self.assertEqual(self.expected_body,
+                             body)
+            # assert content of signature
+            self.assertTrue(
+                message.get_payload(1).get_payload().startswith(
+                    '-----BEGIN PGP SIGNATURE-----\n'),
+                'Message does not start with signature header.')
+            self.assertTrue(
+                message.get_payload(1).get_payload().endswith(
+                    '-----END PGP SIGNATURE-----\n'),
+                'Message does not end with signature footer.')
+            return message
+
+        def verify(message):
+            # replace EOL before verifying (according to rfc3156)
+            fp = StringIO()
+            g = RFC3156CompliantGenerator(
+                fp, mangle_from_=False, maxheaderlen=76)
+            g.flatten(message.get_payload(0))
+            signed_text = re.sub('\r?\n', '\r\n',
+                                 fp.getvalue())
+
+            def assert_verify(key):
+                self.assertTrue(ADDRESS_2 in key.address,
+                                'Signature could not be verified.')
+
+            d = self._km.verify(
+                signed_text, ADDRESS_2, openpgp.OpenPGPKey,
+                detached_sig=message.get_payload(1).get_payload())
+            d.addCallback(assert_verify)
+            return d
+
+        d = self.outgoing_mail._maybe_encrypt_and_sign(self.raw, recipient)
+        d.addCallback(check_signed)
+        d.addCallback(verify)
+        return d
+
+    def test_attach_key(self):
+        d = self.outgoing_mail._maybe_encrypt_and_sign(self.raw, self.dest)
+        d.addCallback(self._assert_encrypted)
+        d.addCallback(self._check_headers, self.lines[:4])
+        d.addCallback(lambda message: self._km.decrypt(
+            message.get_payload(1).get_payload(), ADDRESS, openpgp.OpenPGPKey))
+        d.addCallback(lambda (decrypted, _):
+                      self._check_key_attachment(Parser().parsestr(decrypted)))
+        return d
+
+    def test_attach_key_not_known(self):
+        address = "someunknownaddress@somewhere.com"
+        lines = self.lines
+        lines[1] = "To: <%s>" % (address,)
+        raw = '\r\n'.join(lines)
+        dest = User(address, 'gateway.leap.se', self.proto, ADDRESS_2)
+
+        d = self.outgoing_mail._maybe_encrypt_and_sign(raw, dest)
+        d.addCallback(lambda (message, _):
+                      self._check_headers(message, lines[:4]))
+        d.addCallback(self._check_key_attachment)
+        return d
+
+    def _check_headers(self, message, headers):
+        msgstr = message.as_string(unixfrom=False)
+        for header in headers:
+            self.assertTrue(header in msgstr,
+                            "Missing header: %s" % (header,))
+        return message
+
+    def _check_key_attachment(self, message):
+        for payload in message.get_payload():
+            if payload.is_multipart():
+                return self._check_key_attachment(payload)
+            if 'application/pgp-keys' == payload.get_content_type():
+                keylines = PUBLIC_KEY_2.split('\n')
+                key = BEGIN_PUBLIC_KEY + '\n\n' + '\n'.join(keylines[4:-1])
+                self.assertTrue(key in payload.get_payload(decode=True),
+                                "Key attachment don't match")
+                return
+        self.fail("No public key attachment found")
+
+    def _set_sign_used(self, address):
+        def set_sign(key):
+            key.sign_used = True
+            return self._km.put_key(key, address)
+
+        d = self._km.get_key(address, openpgp.OpenPGPKey, fetch_remote=False)
+        d.addCallback(set_sign)
+        return d
+
+    def _assert_encrypted(self, res):
+        message, _ = res
+        self.assertTrue('Content-Type' in message)
+        self.assertEqual('multipart/encrypted', message.get_content_type())
+        self.assertEqual('application/pgp-encrypted',
+                         message.get_param('protocol'))
+        self.assertEqual(2, len(message.get_payload()))
+        self.assertEqual('application/pgp-encrypted',
+                         message.get_payload(0).get_content_type())
+        self.assertEqual('application/octet-stream',
+                         message.get_payload(1).get_content_type())
+        return message
diff --git a/src/leap/mail/plugins/__init__.py b/src/leap/mail/plugins/__init__.py
new file mode 100644
index 0000000..ddb8691
--- /dev/null
+++ b/src/leap/mail/plugins/__init__.py
@@ -0,0 +1,3 @@
+from twisted.plugin import pluginPackagePaths
+__path__.extend(pluginPackagePaths(__name__))
+__all__ = []
diff --git a/src/leap/mail/plugins/soledad_sync_hooks.py b/src/leap/mail/plugins/soledad_sync_hooks.py
new file mode 100644
index 0000000..9d48126
--- /dev/null
+++ b/src/leap/mail/plugins/soledad_sync_hooks.py
@@ -0,0 +1,19 @@
+# -*- coding: utf-8 -*-
+# soledad_sync_hooks.py
+# Copyright (C) 2015 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from leap.mail.sync_hooks import MailProcessingPostSyncHook
+post_sync_uid_reindexer = MailProcessingPostSyncHook()
diff --git a/src/leap/mail/smtp/README.rst b/src/leap/mail/smtp/README.rst
index f625441..1d3a903 100644
--- a/src/leap/mail/smtp/README.rst
+++ b/src/leap/mail/smtp/README.rst
@@ -1,18 +1,39 @@
 Leap SMTP Gateway
 =================
 
+The Bitmask Client runs a thin SMTP gateway on the user's device, which
+intends to encrypt and sign outgoing messages to achieve point to point
+encryption.
+
+The gateway is bound to localhost and the user's MUA should be configured to
+send messages to it. After doing its thing, the gateway will relay the
+messages to the remote SMTP server.
+
 Outgoing mail workflow:
 
-    * LEAP client runs a thin SMTP proxy on the user's device, bound to
-      localhost.
-    * User's MUA is configured outgoing SMTP to localhost.
-    * When SMTP proxy receives an email from MUA:
-        * SMTP proxy queries Key Manager for the user's private key and public
-          keys of all recipients.
-        * Message is signed by sender and encrypted to recipients.
-        * If recipient's key is missing, email goes out in cleartext (unless
-          user has configured option to send only encrypted email).
-        * Finally, message is gatewayed to provider's SMTP server.
+  * SMTP gateway receives a message from the MUA.
+
+  * SMTP gateway queries Key Manager for the user's private key.
+
+  * For each recipient (including addresses in "To", "Cc" anc "Bcc" fields),
+    the following happens:
+
+    - The recipient's address is validated against RFC2822.
+
+    - An attempt is made to fetch the recipient's public PGP key.
+
+    - If key is not found:
+
+      - If the gateway is configured to only send encrypted messages the
+        recipient is rejected.
+
+      - Otherwise, the message is signed and sent as plain text.
+
+    - If the key is found, the message is encrypted to the recipient and
+      signed with the sender's private PGP key.
+
+  * Finally, one message for each recipient is gatewayed to provider's SMTP
+    server.
 
 
 Running tests
diff --git a/src/leap/mail/smtp/__init__.py b/src/leap/mail/smtp/__init__.py
index bbd4064..2ff14d7 100644
--- a/src/leap/mail/smtp/__init__.py
+++ b/src/leap/mail/smtp/__init__.py
@@ -22,12 +22,13 @@ import logging
 
 from twisted.internet import reactor
 from twisted.internet.error import CannotListenError
+from leap.mail.outgoing.service import OutgoingMail
 
-logger = logging.getLogger(__name__)
-
-from leap.common.events import proto, signal
+from leap.common.events import emit, catalog
 from leap.mail.smtp.gateway import SMTPFactory
 
+logger = logging.getLogger(__name__)
+
 
 def setup_smtp_gateway(port, userid, keymanager, smtp_host, smtp_port,
                        smtp_cert, smtp_key, encrypted_only):
@@ -40,7 +41,7 @@ def setup_smtp_gateway(port, userid, keymanager, smtp_host, smtp_port,
     :param port: The port in which to run the server.
     :type port: int
     :param userid: The user currently logged in
-    :type userid: unicode
+    :type userid: str
     :param keymanager: A Key Manager from where to get recipients' public
                        keys.
     :type keymanager: leap.common.keymanager.KeyManager
@@ -59,16 +60,17 @@ def setup_smtp_gateway(port, userid, keymanager, smtp_host, smtp_port,
     :returns: tuple of SMTPFactory, twisted.internet.tcp.Port
     """
     # configure the use of this service with twistd
-    factory = SMTPFactory(userid, keymanager, smtp_host, smtp_port, smtp_cert,
-                          smtp_key, encrypted_only)
+    outgoing_mail = OutgoingMail(
+        userid, keymanager, smtp_cert, smtp_key, smtp_host, smtp_port)
+    factory = SMTPFactory(userid, keymanager, encrypted_only, outgoing_mail)
     try:
         tport = reactor.listenTCP(port, factory, interface="localhost")
-        signal(proto.SMTP_SERVICE_STARTED, str(port))
+        emit(catalog.SMTP_SERVICE_STARTED, str(port))
         return factory, tport
     except CannotListenError:
         logger.error("STMP Service failed to start: "
                      "cannot listen in port %s" % port)
-        signal(proto.SMTP_SERVICE_FAILED_TO_START, str(port))
+        emit(catalog.SMTP_SERVICE_FAILED_TO_START, str(port))
     except Exception as exc:
         logger.error("Unhandled error while launching smtp gateway service")
         logger.exception(exc)
diff --git a/src/leap/mail/smtp/gateway.py b/src/leap/mail/smtp/gateway.py
index 13d3bbf..7dae907 100644
--- a/src/leap/mail/smtp/gateway.py
+++ b/src/leap/mail/smtp/gateway.py
@@ -21,49 +21,34 @@ The following classes comprise the SMTP gateway service:
 
     * SMTPFactory - A twisted.internet.protocol.ServerFactory that provides
       the SMTPDelivery protocol.
+
     * SMTPDelivery - A twisted.mail.smtp.IMessageDelivery implementation. It
       knows how to validate sender and receiver of messages and it generates
       an EncryptedMessage for each recipient.
-    * SSLContextFactory - Contains the relevant ssl information for the
-      connection.
+
     * EncryptedMessage - An implementation of twisted.mail.smtp.IMessage that
       knows how to encrypt/sign itself before sending.
-
-
 """
-import re
-from StringIO import StringIO
-from email.Header import Header
-from email.utils import parseaddr
-from email.parser import Parser
-from email.mime.application import MIMEApplication
 
 from zope.interface import implements
-from OpenSSL import SSL
 from twisted.mail import smtp
 from twisted.internet.protocol import ServerFactory
-from twisted.internet import reactor, ssl
-from twisted.internet import defer
-from twisted.internet.threads import deferToThread
 from twisted.python import log
 
-from leap.common.check import leap_assert, leap_assert_type
-from leap.common.events import proto, signal
-from leap.keymanager import KeyManager
+from email.Header import Header
+from leap.common.check import leap_assert_type
+from leap.common.events import emit, catalog
 from leap.keymanager.openpgp import OpenPGPKey
 from leap.keymanager.errors import KeyNotFound
-from leap.mail import __version__
+from leap.mail.utils import validate_address
+
 from leap.mail.smtp.rfc3156 import (
-    MultipartSigned,
-    MultipartEncrypted,
-    PGPEncrypted,
-    PGPSignature,
     RFC3156CompliantGenerator,
-    encode_base64_rec,
 )
 
 # replace email generator with a RFC 3156 compliant one.
 from email import generator
+
 generator.Generator = RFC3156CompliantGenerator
 
 
@@ -74,31 +59,6 @@ generator.Generator = RFC3156CompliantGenerator
 LOCAL_FQDN = "bitmask.local"
 
 
-def validate_address(address):
-    """
-    Validate C{address} as defined in RFC 2822.
-
-    :param address: The address to be validated.
-    :type address: str
-
-    @return: A valid address.
-    @rtype: str
-
-    @raise smtp.SMTPBadRcpt: Raised if C{address} is invalid.
-    """
-    leap_assert_type(address, str)
-    # in the following, the address is parsed as described in RFC 2822 and
-    # ('', '') is returned if the parse fails.
-    _, address = parseaddr(address)
-    if address == '':
-        raise smtp.SMTPBadRcpt(address)
-    return address
-
-
-#
-# SMTPFactory
-#
-
 class SMTPHeloLocalhost(smtp.SMTP):
     """
     An SMTP class that ensures a proper FQDN
@@ -119,45 +79,26 @@ class SMTPFactory(ServerFactory):
     """
     domain = LOCAL_FQDN
 
-    def __init__(self, userid, keymanager, host, port, cert, key,
-                 encrypted_only):
+    def __init__(self, userid, keymanager, encrypted_only, outgoing_mail):
         """
         Initialize the SMTP factory.
 
         :param userid: The user currently logged in
         :type userid: unicode
-        :param keymanager: A KeyManager for retrieving recipient's keys.
-        :type keymanager: leap.common.keymanager.KeyManager
-        :param host: The hostname of the remote SMTP server.
-        :type host: str
-        :param port: The port of the remote SMTP server.
-        :type port: int
-        :param cert: The client certificate for authentication.
-        :type cert: str
-        :param key: The client key for authentication.
-        :type key: str
+        :param keymanager: A Key Manager from where to get recipients' public
+                           keys.
         :param encrypted_only: Whether the SMTP gateway should send unencrypted
                                mail or not.
         :type encrypted_only: bool
+        :param outgoing_mail: The outgoing mail to send the message
+        :type outgoing_mail: leap.mail.outgoing.service.OutgoingMail
         """
-        # assert params
-        leap_assert_type(keymanager, KeyManager)
-        leap_assert_type(host, str)
-        leap_assert(host != '')
-        leap_assert_type(port, int)
-        leap_assert(port is not 0)
-        leap_assert_type(cert, unicode)
-        leap_assert(cert != '')
-        leap_assert_type(key, unicode)
-        leap_assert(key != '')
+
         leap_assert_type(encrypted_only, bool)
         # and store them
         self._userid = userid
         self._km = keymanager
-        self._host = host
-        self._port = port
-        self._cert = cert
-        self._key = key
+        self._outgoing_mail = outgoing_mail
         self._encrypted_only = encrypted_only
 
     def buildProtocol(self, addr):
@@ -170,9 +111,10 @@ class SMTPFactory(ServerFactory):
         @return: The protocol.
         @rtype: SMTPDelivery
         """
-        smtpProtocol = SMTPHeloLocalhost(SMTPDelivery(
-            self._userid, self._km, self._host, self._port, self._cert,
-            self._key, self._encrypted_only))
+        smtpProtocol = SMTPHeloLocalhost(
+            SMTPDelivery(
+                self._userid, self._km, self._encrypted_only,
+                self._outgoing_mail))
         smtpProtocol.factory = self
         return smtpProtocol
 
@@ -188,33 +130,23 @@ class SMTPDelivery(object):
 
     implements(smtp.IMessageDelivery)
 
-    def __init__(self, userid, keymanager, host, port, cert, key,
-                 encrypted_only):
+    def __init__(self, userid, keymanager, encrypted_only, outgoing_mail):
         """
         Initialize the SMTP delivery object.
 
         :param userid: The user currently logged in
         :type userid: unicode
-        :param keymanager: A KeyManager for retrieving recipient's keys.
-        :type keymanager: leap.common.keymanager.KeyManager
-        :param host: The hostname of the remote SMTP server.
-        :type host: str
-        :param port: The port of the remote SMTP server.
-        :type port: int
-        :param cert: The client certificate for authentication.
-        :type cert: str
-        :param key: The client key for authentication.
-        :type key: str
+        :param keymanager: A Key Manager from where to get recipients' public
+                           keys.
         :param encrypted_only: Whether the SMTP gateway should send unencrypted
                                mail or not.
         :type encrypted_only: bool
+        :param outgoing_mail: The outgoing mail to send the message
+        :type outgoing_mail: leap.mail.outgoing.service.OutgoingMail
         """
         self._userid = userid
+        self._outgoing_mail = outgoing_mail
         self._km = keymanager
-        self._host = host
-        self._port = port
-        self._cert = cert
-        self._key = key
         self._encrypted_only = encrypted_only
         self._origin = None
 
@@ -242,47 +174,58 @@ class SMTPDelivery(object):
 
     def validateTo(self, user):
         """
-        Validate the address of C{user}, a recipient of the message.
+        Validate the address of a recipient of the message, possibly
+        rejecting it if the recipient key is not available.
 
-        This method is called once for each recipient and validates the
-        C{user}'s address against the RFC 2822 definition. If the
-        configuration option ENCRYPTED_ONLY_KEY is True, it also asserts the
-        existence of the user's key.
+        This method is called once for each recipient, i.e. for each SMTP
+        protocol line beginning with "RCPT TO:", which includes all addresses
+        in "To", "Cc" and "Bcc" MUA fields.
 
-        In the end, it returns an encrypted message object that is able to
-        send itself to the C{user}'s address.
+        The recipient's address is validated against the RFC 2822 definition.
+        If self._encrypted_only is True and no key is found for a recipient,
+        then that recipient is rejected.
+
+        The method returns an encrypted message object that is able to send
+        itself to the user's address.
 
         :param user: The user whose address we wish to validate.
         :type: twisted.mail.smtp.User
 
-        @return: A Deferred which becomes, or a callable which takes no
-            arguments and returns an object implementing IMessage. This will
-            be called and the returned object used to deliver the message when
-            it arrives.
+        @return: A callable which takes no arguments and returns an
+                 encryptedMessage.
         @rtype: no-argument callable
 
         @raise SMTPBadRcpt: Raised if messages to the address are not to be
-            accepted.
+                            accepted.
         """
         # try to find recipient's public key
-        try:
-            address = validate_address(user.dest.addrstr)
-            # verify if recipient key is available in keyring
-            self._km.get_key(address, OpenPGPKey)  # might raise KeyNotFound
+        address = validate_address(user.dest.addrstr)
+
+        # verify if recipient key is available in keyring
+        def found(_):
             log.msg("Accepting mail for %s..." % user.dest.addrstr)
-            signal(proto.SMTP_RECIPIENT_ACCEPTED_ENCRYPTED, user.dest.addrstr)
-        except KeyNotFound:
-            # if key was not found, check config to see if will send anyway.
+            emit(catalog.SMTP_RECIPIENT_ACCEPTED_ENCRYPTED, user.dest.addrstr)
+
+        def not_found(failure):
+            failure.trap(KeyNotFound)
+
+            # if key was not found, check config to see if will send anyway
             if self._encrypted_only:
-                signal(proto.SMTP_RECIPIENT_REJECTED, user.dest.addrstr)
+                emit(catalog.SMTP_RECIPIENT_REJECTED, user.dest.addrstr)
                 raise smtp.SMTPBadRcpt(user.dest.addrstr)
             log.msg("Warning: will send an unencrypted message (because "
                     "encrypted_only' is set to False).")
-            signal(
-                proto.SMTP_RECIPIENT_ACCEPTED_UNENCRYPTED, user.dest.addrstr)
-        return lambda: EncryptedMessage(
-            self._origin, user, self._km, self._host, self._port, self._cert,
-            self._key)
+            emit(
+                catalog.SMTP_RECIPIENT_ACCEPTED_UNENCRYPTED,
+                user.dest.addrstr)
+
+        def encrypt_func(_):
+            return lambda: EncryptedMessage(user, self._outgoing_mail)
+
+        d = self._km.get_key(address, OpenPGPKey)
+        d.addCallbacks(found, not_found)
+        d.addCallback(encrypt_func)
+        return d
 
     def validateFrom(self, helo, origin):
         """
@@ -314,19 +257,6 @@ class SMTPDelivery(object):
 # EncryptedMessage
 #
 
-class SSLContextFactory(ssl.ClientContextFactory):
-    def __init__(self, cert, key):
-        self.cert = cert
-        self.key = key
-
-    def getContext(self):
-        self.method = SSL.TLSv1_METHOD  # SSLv23_METHOD
-        ctx = ssl.ClientContextFactory.getContext(self)
-        ctx.use_certificate_file(self.cert)
-        ctx.use_privatekey_file(self.key)
-        return ctx
-
-
 class EncryptedMessage(object):
     """
     Receive plaintext from client, encrypt it and send message to a
@@ -334,44 +264,21 @@ class EncryptedMessage(object):
     """
     implements(smtp.IMessage)
 
-    FOOTER_STRING = "I prefer encrypted email"
-
-    def __init__(self, fromAddress, user, keymanager, host, port, cert, key):
+    def __init__(self, user, outgoing_mail):
         """
         Initialize the encrypted message.
 
-        :param fromAddress: The address of the sender.
-        :type fromAddress: twisted.mail.smtp.Address
         :param user: The recipient of this message.
         :type user: twisted.mail.smtp.User
-        :param keymanager: A KeyManager for retrieving recipient's keys.
-        :type keymanager: leap.common.keymanager.KeyManager
-        :param host: The hostname of the remote SMTP server.
-        :type host: str
-        :param port: The port of the remote SMTP server.
-        :type port: int
-        :param cert: The client certificate for authentication.
-        :type cert: str
-        :param key: The client key for authentication.
-        :type key: str
+        :param outgoing_mail: The outgoing mail to send the message
+        :type outgoing_mail: leap.mail.outgoing.service.OutgoingMail
         """
         # assert params
         leap_assert_type(user, smtp.User)
-        leap_assert_type(keymanager, KeyManager)
-        # and store them
-        self._fromAddress = fromAddress
-        self._user = user
-        self._km = keymanager
-        self._host = host
-        self._port = port
-        self._cert = cert
-        self._key = key
-        # initialize list for message's lines
-        self.lines = []
 
-    #
-    # methods from smtp.IMessage
-    #
+        self._user = user
+        self._lines = []
+        self._outgoing_mail = outgoing_mail
 
     def lineReceived(self, line):
         """
@@ -380,7 +287,7 @@ class EncryptedMessage(object):
         :param line: The received line.
         :type line: str
         """
-        self.lines.append(line)
+        self._lines.append(line)
 
     def eomReceived(self):
         """
@@ -391,10 +298,10 @@ class EncryptedMessage(object):
         :returns: a deferred
         """
         log.msg("Message data complete.")
-        self.lines.append('')  # add a trailing newline
-        d = deferToThread(self._maybe_encrypt_and_sign)
-        d.addCallbacks(self.sendMessage, self.skipNoKeyErrBack)
-        return d
+        self._lines.append('')  # add a trailing newline
+        raw_mail = '\r\n'.join(self._lines)
+
+        return self._outgoing_mail.send_message(raw_mail, self._user)
 
     def connectionLost(self):
         """
@@ -402,292 +309,7 @@ class EncryptedMessage(object):
         """
         log.msg("Connection lost unexpectedly!")
         log.err()
-        signal(proto.SMTP_CONNECTION_LOST, self._user.dest.addrstr)
+        emit(catalog.SMTP_CONNECTION_LOST, self._user.dest.addrstr)
         # unexpected loss of connection; don't save
-        self.lines = []
-
-    # ends IMessage implementation
-
-    def skipNoKeyErrBack(self, failure):
-        """
-        Errback that ignores a KeyNotFound
-
-        :param failure: the failure
-        :type Failure: Failure
-        """
-        err = failure.value
-        if failure.check(KeyNotFound):
-            pass
-        else:
-            raise err
-
-    def parseMessage(self):
-        """
-        Separate message headers from body.
-        """
-        parser = Parser()
-        return parser.parsestr('\r\n'.join(self.lines))
-
-    def sendQueued(self, r):
-        """
-        Callback for the queued message.
-
-        :param r: The result from the last previous callback in the chain.
-        :type r: anything
-        """
-        log.msg(r)
-
-    def sendSuccess(self, r):
-        """
-        Callback for a successful send.
-
-        :param r: The result from the last previous callback in the chain.
-        :type r: anything
-        """
-        log.msg(r)
-        signal(proto.SMTP_SEND_MESSAGE_SUCCESS, self._user.dest.addrstr)
-
-    def sendError(self, failure):
-        """
-        Callback for an unsuccessfull send.
-
-        :param e: The result from the last errback.
-        :type e: anything
-        """
-        signal(proto.SMTP_SEND_MESSAGE_ERROR, self._user.dest.addrstr)
-        err = failure.value
-        log.err(err)
-        raise err
-
-    def sendMessage(self, *args):
-        """
-        Sends the message.
-
-        :return: A deferred with callback and errback for
-                 this #message send.
-        :rtype: twisted.internet.defer.Deferred
-        """
-        d = deferToThread(self._route_msg)
-        d.addCallbacks(self.sendQueued, self.sendError)
-        return d
-
-    def _route_msg(self):
-        """
-        Sends the msg using the ESMTPSenderFactory.
-        """
-        log.msg("Connecting to SMTP server %s:%s" % (self._host, self._port))
-        msg = self._msg.as_string(False)
-
-        # we construct a defer to pass to the ESMTPSenderFactory
-        d = defer.Deferred()
-        d.addCallbacks(self.sendSuccess, self.sendError)
-        # we don't pass an ssl context factory to the ESMTPSenderFactory
-        # because ssl will be handled by reactor.connectSSL() below.
-        factory = smtp.ESMTPSenderFactory(
-            "",  # username is blank because server does not use auth.
-            "",  # password is blank because server does not use auth.
-            self._fromAddress.addrstr,
-            self._user.dest.addrstr,
-            StringIO(msg),
-            d,
-            heloFallback=True,
-            requireAuthentication=False,
-            requireTransportSecurity=True)
-        factory.domain = __version__
-        signal(proto.SMTP_SEND_MESSAGE_START, self._user.dest.addrstr)
-        reactor.connectSSL(
-            self._host, self._port, factory,
-            contextFactory=SSLContextFactory(self._cert, self._key))
-
-    #
-    # encryption methods
-    #
-
-    def _encrypt_and_sign(self, pubkey, signkey):
-        """
-        Create an RFC 3156 compliang PGP encrypted and signed message using
-        C{pubkey} to encrypt and C{signkey} to sign.
 
-        :param pubkey: The public key used to encrypt the message.
-        :type pubkey: OpenPGPKey
-        :param signkey: The private key used to sign the message.
-        :type signkey: OpenPGPKey
-        """
-        # create new multipart/encrypted message with 'pgp-encrypted' protocol
-        newmsg = MultipartEncrypted('application/pgp-encrypted')
-        # move (almost) all headers from original message to the new message
-        self._fix_headers(self._origmsg, newmsg, signkey)
-        # create 'application/octet-stream' encrypted message
-        encmsg = MIMEApplication(
-            self._km.encrypt(self._origmsg.as_string(unixfrom=False), pubkey,
-                             sign=signkey),
-            _subtype='octet-stream', _encoder=lambda x: x)
-        encmsg.add_header('content-disposition', 'attachment',
-                          filename='msg.asc')
-        # create meta message
-        metamsg = PGPEncrypted()
-        metamsg.add_header('Content-Disposition', 'attachment')
-        # attach pgp message parts to new message
-        newmsg.attach(metamsg)
-        newmsg.attach(encmsg)
-        self._msg = newmsg
-
-    def _sign(self, signkey):
-        """
-        Create an RFC 3156 compliant PGP signed MIME message using C{signkey}.
-
-        :param signkey: The private key used to sign the message.
-        :type signkey: leap.common.keymanager.openpgp.OpenPGPKey
-        """
-        # create new multipart/signed message
-        newmsg = MultipartSigned('application/pgp-signature', 'pgp-sha512')
-        # move (almost) all headers from original message to the new message
-        self._fix_headers(self._origmsg, newmsg, signkey)
-        # apply base64 content-transfer-encoding
-        encode_base64_rec(self._origmsg)
-        # get message text with headers and replace \n for \r\n
-        fp = StringIO()
-        g = RFC3156CompliantGenerator(
-            fp, mangle_from_=False, maxheaderlen=76)
-        g.flatten(self._origmsg)
-        msgtext = re.sub('\r?\n', '\r\n', fp.getvalue())
-        # make sure signed message ends with \r\n as per OpenPGP stantard.
-        if self._origmsg.is_multipart():
-            if not msgtext.endswith("\r\n"):
-                msgtext += "\r\n"
-        # calculate signature
-        signature = self._km.sign(msgtext, signkey, digest_algo='SHA512',
-                                  clearsign=False, detach=True, binary=False)
-        sigmsg = PGPSignature(signature)
-        # attach original message and signature to new message
-        newmsg.attach(self._origmsg)
-        newmsg.attach(sigmsg)
-        self._msg = newmsg
-
-    def _maybe_encrypt_and_sign(self):
-        """
-        Attempt to encrypt and sign the outgoing message.
-
-        The behaviour of this method depends on:
-
-            1. the original message's content-type, and
-            2. the availability of the recipient's public key.
-
-        If the original message's content-type is "multipart/encrypted", then
-        the original message is not altered. For any other content-type, the
-        method attempts to fetch the recipient's public key. If the
-        recipient's public key is available, the message is encrypted and
-        signed; otherwise it is only signed.
-
-        Note that, if the C{encrypted_only} configuration is set to True and
-        the recipient's public key is not available, then the recipient
-        address would have been rejected in SMTPDelivery.validateTo().
-
-        The following table summarizes the overall behaviour of the gateway:
-
-        +---------------------------------------------------+----------------+
-        | content-type        | rcpt pubkey | enforce encr. | action         |
-        +---------------------+-------------+---------------+----------------+
-        | multipart/encrypted | any         | any           | pass           |
-        | other               | available   | any           | encrypt + sign |
-        | other               | unavailable | yes           | reject         |
-        | other               | unavailable | no            | sign           |
-        +---------------------+-------------+---------------+----------------+
-        """
-        # pass if the original message's content-type is "multipart/encrypted"
-        self._origmsg = self.parseMessage()
-        if self._origmsg.get_content_type() == 'multipart/encrypted':
-            self._msg = self._origmsg
-            return
-
-        from_address = validate_address(self._fromAddress.addrstr)
-        username, domain = from_address.split('@')
-
-        # add a nice footer to the outgoing message
-        if self._origmsg.get_content_type() == 'text/plain':
-            self.lines.append('--')
-            self.lines.append('%s - https://%s/key/%s' %
-                              (self.FOOTER_STRING, domain, username))
-            self.lines.append('')
-
-        self._origmsg = self.parseMessage()
-
-        # get sender and recipient data
-        signkey = self._km.get_key(from_address, OpenPGPKey, private=True)
-        log.msg("Will sign the message with %s." % signkey.fingerprint)
-        to_address = validate_address(self._user.dest.addrstr)
-        try:
-            # try to get the recipient pubkey
-            pubkey = self._km.get_key(to_address, OpenPGPKey)
-            log.msg("Will encrypt the message to %s." % pubkey.fingerprint)
-            signal(proto.SMTP_START_ENCRYPT_AND_SIGN,
-                   "%s,%s" % (self._fromAddress.addrstr, to_address))
-            self._encrypt_and_sign(pubkey, signkey)
-            signal(proto.SMTP_END_ENCRYPT_AND_SIGN,
-                   "%s,%s" % (self._fromAddress.addrstr, to_address))
-        except KeyNotFound:
-            # at this point we _can_ send unencrypted mail, because if the
-            # configuration said the opposite the address would have been
-            # rejected in SMTPDelivery.validateTo().
-            log.msg('Will send unencrypted message to %s.' % to_address)
-            signal(proto.SMTP_START_SIGN, self._fromAddress.addrstr)
-            self._sign(signkey)
-            signal(proto.SMTP_END_SIGN, self._fromAddress.addrstr)
-
-    def _fix_headers(self, origmsg, newmsg, signkey):
-        """
-        Move some headers from C{origmsg} to C{newmsg}, delete unwanted
-        headers from C{origmsg} and add new headers to C{newms}.
-
-        Outgoing messages are either encrypted and signed or just signed
-        before being sent. Because of that, they are packed inside new
-        messages and some manipulation has to be made on their headers.
-
-        Allowed headers for passing through:
-
-            - From
-            - Date
-            - To
-            - Subject
-            - Reply-To
-            - References
-            - In-Reply-To
-            - Cc
-
-        Headers to be added:
-
-            - Message-ID (i.e. should not use origmsg's Message-Id)
-            - Received (this is added automatically by twisted smtp API)
-            - OpenPGP (see #4447)
-
-        Headers to be deleted:
-
-            - User-Agent
-
-        :param origmsg: The original message.
-        :type origmsg: email.message.Message
-        :param newmsg: The new message being created.
-        :type newmsg: email.message.Message
-        :param signkey: The key used to sign C{newmsg}
-        :type signkey: OpenPGPKey
-        """
-        # move headers from origmsg to newmsg
-        headers = origmsg.items()
-        passthrough = [
-            'from', 'date', 'to', 'subject', 'reply-to', 'references',
-            'in-reply-to', 'cc'
-        ]
-        headers = filter(lambda x: x[0].lower() in passthrough, headers)
-        for hkey, hval in headers:
-            newmsg.add_header(hkey, hval)
-            del(origmsg[hkey])
-        # add a new message-id to newmsg
-        newmsg.add_header('Message-Id', smtp.messageid())
-        # add openpgp header to newmsg
-        username, domain = signkey.address.split('@')
-        newmsg.add_header(
-            'OpenPGP', 'id=%s' % signkey.key_id,
-            url='https://%s/key/%s' % (domain, username),
-            preference='signencrypt')
-        # delete user-agent from origmsg
-        del(origmsg['user-agent'])
+        self._lines = []
diff --git a/src/leap/mail/smtp/rfc3156.py b/src/leap/mail/smtp/rfc3156.py
index 62a0675..7d7bc0f 100644
--- a/src/leap/mail/smtp/rfc3156.py
+++ b/src/leap/mail/smtp/rfc3156.py
@@ -19,9 +19,7 @@
 Implements RFC 3156: MIME Security with OpenPGP.
 """
 
-import re
 import base64
-from abc import ABCMeta, abstractmethod
 from StringIO import StringIO
 
 from twisted.python import log
diff --git a/src/leap/mail/smtp/tests/__init__.py b/src/leap/mail/smtp/tests/__init__.py
index dc24293..e69de29 100644
--- a/src/leap/mail/smtp/tests/__init__.py
+++ b/src/leap/mail/smtp/tests/__init__.py
@@ -1,386 +0,0 @@
-# -*- coding: utf-8 -*-
-# __init__.py
-# Copyright (C) 2013 LEAP
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-
-
-"""
-Base classes and keys for SMTP gateway tests.
-"""
-
-import os
-import distutils.spawn
-import shutil
-import tempfile
-from mock import Mock
-
-
-from twisted.trial import unittest
-
-
-from leap.soledad.client import Soledad
-from leap.keymanager import (
-    KeyManager,
-    openpgp,
-)
-
-
-from leap.common.testing.basetest import BaseLeapTest
-
-
-def _find_gpg():
-    gpg_path = distutils.spawn.find_executable('gpg')
-    return os.path.realpath(gpg_path) if gpg_path is not None else "/usr/bin/gpg"
-    
-
-class TestCaseWithKeyManager(BaseLeapTest):
-
-    GPG_BINARY_PATH = _find_gpg()
-
-    def setUp(self):
-        # mimic BaseLeapTest.setUpClass behaviour, because this is deprecated
-        # in Twisted: http://twistedmatrix.com/trac/ticket/1870
-        self.old_path = os.environ['PATH']
-        self.old_home = os.environ['HOME']
-        self.tempdir = tempfile.mkdtemp(prefix="leap_tests-")
-        self.home = self.tempdir
-        bin_tdir = os.path.join(
-            self.tempdir,
-            'bin')
-        os.environ["PATH"] = bin_tdir
-        os.environ["HOME"] = self.tempdir
-
-        # setup our own stuff
-        address = 'leap@leap.se'  # user's address in the form user@provider
-        uuid = 'leap@leap.se'
-        passphrase = u'123'
-        secrets_path = os.path.join(self.tempdir, 'secret.gpg')
-        local_db_path = os.path.join(self.tempdir, 'soledad.u1db')
-        server_url = 'http://provider/'
-        cert_file = ''
-
-        self._soledad = self._soledad_instance(
-            uuid, passphrase, secrets_path, local_db_path, server_url,
-            cert_file)
-        self._km = self._keymanager_instance(address)
-
-    def _soledad_instance(self, uuid, passphrase, secrets_path, local_db_path,
-                          server_url, cert_file):
-        """
-        Return a Soledad instance for tests.
-        """
-        # mock key fetching and storing so Soledad doesn't fail when trying to
-        # reach the server.
-        Soledad._fetch_keys_from_shared_db = Mock(return_value=None)
-        Soledad._assert_keys_in_shared_db = Mock(return_value=None)
-
-        # instantiate soledad
-        def _put_doc_side_effect(doc):
-            self._doc_put = doc
-
-        class MockSharedDB(object):
-
-            get_doc = Mock(return_value=None)
-            put_doc = Mock(side_effect=_put_doc_side_effect)
-            lock = Mock(return_value=('atoken', 300))
-            unlock = Mock(return_value=True)
-
-            def __call__(self):
-                return self
-
-        Soledad._shared_db = MockSharedDB()
-
-        return Soledad(
-            uuid,
-            passphrase,
-            secrets_path=secrets_path,
-            local_db_path=local_db_path,
-            server_url=server_url,
-            cert_file=cert_file,
-        )
-
-    def _keymanager_instance(self, address):
-        """
-        Return a Key Manager instance for tests.
-        """
-        self._config = {
-            'host': 'http://provider/',
-            'port': 25,
-            'username': address,
-            'password': '<password>',
-            'encrypted_only': True,
-            'cert': u'src/leap/mail/smtp/tests/cert/server.crt',
-            'key': u'src/leap/mail/smtp/tests/cert/server.key',
-        }
-
-        class Response(object):
-            status_code = 200
-            headers = {'content-type': 'application/json'}
-
-            def json(self):
-                return {'address': ADDRESS_2, 'openpgp': PUBLIC_KEY_2}
-
-            def raise_for_status(self):
-                pass
-
-        nickserver_url = ''  # the url of the nickserver
-        km = KeyManager(address, nickserver_url, self._soledad,
-                        ca_cert_path='', gpgbinary=self.GPG_BINARY_PATH)
-        km._fetcher.put = Mock()
-        km._fetcher.get = Mock(return_value=Response())
-
-        # insert test keys in key manager.
-        pgp = openpgp.OpenPGPScheme(
-            self._soledad, gpgbinary=self.GPG_BINARY_PATH)
-        pgp.put_ascii_key(PRIVATE_KEY)
-        pgp.put_ascii_key(PRIVATE_KEY_2)
-
-        return km
-
-    def tearDown(self):
-        # mimic LeapBaseTest.tearDownClass behaviour
-        os.environ["PATH"] = self.old_path
-        os.environ["HOME"] = self.old_home
-        # safety check
-        assert 'leap_tests-' in self.tempdir
-        shutil.rmtree(self.tempdir)
-
-
-# Key material for testing
-KEY_FINGERPRINT = "E36E738D69173C13D709E44F2F455E2824D18DDF"
-
-ADDRESS = 'leap@leap.se'
-
-PUBLIC_KEY = """
------BEGIN PGP PUBLIC KEY BLOCK-----
-Version: GnuPG v1.4.10 (GNU/Linux)
-
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-=MuOY
------END PGP PUBLIC KEY BLOCK-----
-"""
-
-PRIVATE_KEY = """
------BEGIN PGP PRIVATE KEY BLOCK-----
-Version: GnuPG v1.4.10 (GNU/Linux)
-
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-rtER9pLvYzCjBPg8IfGLw0o754Qbhh/ReplCRTusP/fQMybvCvfxreS3oyEriu/G
-GufRomjewZ8EMHDIgUsLcYo2UHZsfF7tcazgxMGmMvazp4r8vpgrvW/8fIN/6Adu
-tF+WjWDTvJLFJCe6O+BFJOWrssNrrra1zGtLC1s8s+Wfpe+bGPL5zpHeebGTwH1U
-22eqgJArlEKxrfarz7W5+uHZJHSjF/K9ZvunLGD0n9GOPMpji3UO3zeM8IYoWn7E
-/EWK1XbjnssNemeeTZ+sDh+qrD7BOi+vCX1IyBxbfqnQfJZvmcPWpruy1UsO+aIC
-0GY8Jr3OL69dDQ21jueJAh8EGAEIAAkFAlC9+dkCGwwACgkQL0VeKCTRjd9HCw/+
-LQSVgLLF4ulYlPCjWIIuQwrPbJfWUVVr2dPUFVM85DCv8gBzk5c121snXh9Swovm
-laBbw6ate3BmbXLh64jVE9Za5sbTWi7PCcbO/bpRy4d6oLmitmNw6cq0vjTLxUYy
-bwuiJxWREkfxuU85EKdouN062YDevH+/YResmlJrcCE7LRlJFeRlKsrrwBU3BqYd
-GgFJjKjQC1peeQ9fj62Y7xfwE9+PXbkiWO5u/Bk8hb1VZH1SoIRU98NHVcp6BVvp
-VK0jLAXuSauSczULmpRjbyt1lhaAqivDTWEEZXiNNbRyp17c3nVdPWOcgBr42hdQ
-z25CgZgyLCsvu82wuXLKJblrIPJX3Yf+si6KqEWBsmwdOWybsjygaF5HvzgFqAAD
-U0goPWoQ71PorP2XOUNp5ZLkBQp5etvtkksjVNMIhnHn8PGMuoxO39EUGlWj2B5l
-Cu8tSosAzB1pS8NcLZzoNoI9dOHrmgJmP+GrOUkcf5GhNZbMoj4GNfGBRYX0SZlQ
-GuDrwNKYj73C4MWyNnnUFyq8nDHJ/G1NpaF2hiof9RBL4PUU/f92JkceXPBXA8gL
-Mz2ig1OButwPPLFGQhWqxXAGrsS3Ny+BhTJfnfIbbkaLLphBpDZm1D9XKbAUvdd1
-RZXoH+FTg9UAW87eqU610npOkT6cRaBxaMK/mDtGNdc=
-=JTFu
------END PGP PRIVATE KEY BLOCK-----
-"""
-
-ADDRESS_2 = 'anotheruser@leap.se'
-
-PUBLIC_KEY_2 = """
------BEGIN PGP PUBLIC KEY BLOCK-----
-Version: GnuPG v1.4.10 (GNU/Linux)
-
-mI0EUYwJXgEEAMbTKHuPJ5/Gk34l9Z06f+0WCXTDXdte1UBoDtZ1erAbudgC4MOR
-gquKqoj3Hhw0/ILqJ88GcOJmKK/bEoIAuKaqlzDF7UAYpOsPZZYmtRfPC2pTCnXq
-Z1vdeqLwTbUspqXflkCkFtfhGKMq5rH8GV5a3tXZkRWZhdNwhVXZagC3ABEBAAG0
-IWFub3RoZXJ1c2VyIDxhbm90aGVydXNlckBsZWFwLnNlPoi4BBMBAgAiBQJRjAle
-AhsDBgsJCAcDAgYVCAIJCgsEFgIDAQIeAQIXgAAKCRB/nfpof+5XWotuA/4tLN4E
-gUr7IfLy2HkHAxzw7A4rqfMN92DIM9mZrDGaWRrOn3aVF7VU1UG7MDkHfPvp/cFw
-ezoCw4s4IoHVc/pVlOkcHSyt4/Rfh248tYEJmFCJXGHpkK83VIKYJAithNccJ6Q4
-JE/o06Mtf4uh/cA1HUL4a4ceqUhtpLJULLeKo7iNBFGMCV4BBADsyQI7GR0wSAxz
-VayLjuPzgT+bjbFeymIhjuxKIEwnIKwYkovztW+4bbOcQs785k3Lp6RzvigTpQQt
-Z/hwcLOqZbZw8t/24+D+Pq9mMP2uUvCFFqLlVvA6D3vKSQ/XNN+YB919WQ04jh63
-yuRe94WenT1RJd6xU1aaUff4rKizuQARAQABiJ8EGAECAAkFAlGMCV4CGwwACgkQ
-f536aH/uV1rPZQQAqCzRysOlu8ez7PuiBD4SebgRqWlxa1TF1ujzfLmuPivROZ2X
-Kw5aQstxgGSjoB7tac49s0huh4X8XK+BtJBfU84JS8Jc2satlfwoyZ35LH6sDZck
-I+RS/3we6zpMfHs3vvp9xgca6ZupQxivGtxlJs294TpJorx+mFFqbV17AzQ=
-=Thdu
------END PGP PUBLIC KEY BLOCK-----
-"""
-
-PRIVATE_KEY_2 = """
------BEGIN PGP PRIVATE KEY BLOCK-----
-Version: GnuPG v1.4.10 (GNU/Linux)
-
-lQHYBFGMCV4BBADG0yh7jyefxpN+JfWdOn/tFgl0w13bXtVAaA7WdXqwG7nYAuDD
-kYKriqqI9x4cNPyC6ifPBnDiZiiv2xKCALimqpcwxe1AGKTrD2WWJrUXzwtqUwp1
-6mdb3Xqi8E21LKal35ZApBbX4RijKuax/BleWt7V2ZEVmYXTcIVV2WoAtwARAQAB
-AAP7BLuSAx7tOohnimEs74ks8l/L6dOcsFQZj2bqs4AoY3jFe7bV0tHr4llypb/8
-H3/DYvpf6DWnCjyUS1tTnXSW8JXtx01BUKaAufSmMNg9blKV6GGHlT/Whe9uVyks
-7XHk/+9mebVMNJ/kNlqq2k+uWqJohzC8WWLRK+d1tBeqDsECANZmzltPaqUsGV5X
-C3zszE3tUBgptV/mKnBtopKi+VH+t7K6fudGcG+bAcZDUoH/QVde52mIIjjIdLje
-uajJuHUCAO1mqh+vPoGv4eBLV7iBo3XrunyGXiys4a39eomhxTy3YktQanjjx+ty
-GltAGCs5PbWGO6/IRjjvd46wh53kzvsCAO0J97gsWhzLuFnkxFAJSPk7RRlyl7lI
-1XS/x0Og6j9XHCyY1OYkfBm0to3UlCfkgirzCYlTYObCofzdKFIPDmSqHbQhYW5v
-dGhlcnVzZXIgPGFub3RoZXJ1c2VyQGxlYXAuc2U+iLgEEwECACIFAlGMCV4CGwMG
-CwkIBwMCBhUIAgkKCwQWAgMBAh4BAheAAAoJEH+d+mh/7ldai24D/i0s3gSBSvsh
-8vLYeQcDHPDsDiup8w33YMgz2ZmsMZpZGs6fdpUXtVTVQbswOQd8++n9wXB7OgLD
-izgigdVz+lWU6RwdLK3j9F+Hbjy1gQmYUIlcYemQrzdUgpgkCK2E1xwnpDgkT+jT
-oy1/i6H9wDUdQvhrhx6pSG2kslQst4qjnQHYBFGMCV4BBADsyQI7GR0wSAxzVayL
-juPzgT+bjbFeymIhjuxKIEwnIKwYkovztW+4bbOcQs785k3Lp6RzvigTpQQtZ/hw
-cLOqZbZw8t/24+D+Pq9mMP2uUvCFFqLlVvA6D3vKSQ/XNN+YB919WQ04jh63yuRe
-94WenT1RJd6xU1aaUff4rKizuQARAQABAAP9EyElqJ3dq3EErXwwT4mMnbd1SrVC
-rUJrNWQZL59mm5oigS00uIyR0SvusOr+UzTtd8ysRuwHy5d/LAZsbjQStaOMBILx
-77TJveOel0a1QK0YSMF2ywZMCKvquvjli4hAtWYz/EwfuzQN3t23jc5ny+GqmqD2
-3FUxLJosFUfLNmECAO9KhVmJi+L9dswIs+2Dkjd1eiRQzNOEVffvYkGYZyKxNiXF
-UA5kvyZcB4iAN9sWCybE4WHZ9jd4myGB0MPDGxkCAP1RsXJbbuD6zS7BXe5gwunO
-2q4q7ptdSl/sJYQuTe1KNP5d/uGsvlcFfsYjpsopasPjFBIncc/2QThMKlhoEaEB
-/0mVAxpT6SrEvUbJ18z7kna24SgMPr3OnPMxPGfvNLJY/Xv/A17YfoqjmByCvsKE
-JCDjopXtmbcrZyoEZbEht9mko4ifBBgBAgAJBQJRjAleAhsMAAoJEH+d+mh/7lda
-z2UEAKgs0crDpbvHs+z7ogQ+Enm4EalpcWtUxdbo83y5rj4r0TmdlysOWkLLcYBk
-o6Ae7WnOPbNIboeF/FyvgbSQX1POCUvCXNrGrZX8KMmd+Sx+rA2XJCPkUv98Hus6
-THx7N776fcYHGumbqUMYrxrcZSbNveE6SaK8fphRam1dewM0
-=a5gs
------END PGP PRIVATE KEY BLOCK-----
-"""
diff --git a/src/leap/mail/smtp/tests/test_gateway.py b/src/leap/mail/smtp/tests/test_gateway.py
index 466677f..0b9a364 100644
--- a/src/leap/mail/smtp/tests/test_gateway.py
+++ b/src/leap/mail/smtp/tests/test_gateway.py
@@ -20,24 +20,24 @@
 SMTP gateway tests.
 """
 
-
 import re
 from datetime import datetime
+
+from twisted.internet import reactor
+from twisted.internet.defer import inlineCallbacks, fail, succeed, Deferred
 from twisted.test import proto_helpers
-from twisted.mail.smtp import User, Address
 
 from mock import Mock
-
 from leap.mail.smtp.gateway import (
-    SMTPFactory,
-    EncryptedMessage,
+    SMTPFactory
 )
-from leap.mail.smtp.tests import (
+from leap.mail.tests import (
     TestCaseWithKeyManager,
     ADDRESS,
     ADDRESS_2,
 )
-from leap.keymanager import openpgp
+from leap.keymanager import openpgp, errors
+
 
 # some regexps
 IP_REGEX = "(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}" + \
@@ -71,20 +71,7 @@ class TestSmtpGateway(TestCaseWithKeyManager):
                                            % (string, pattern))
             raise self.failureException(msg)
 
-    def test_openpgp_encrypt_decrypt(self):
-        "Test if openpgp can encrypt and decrypt."
-        text = "simple raw text"
-        pubkey = self._km.get_key(
-            ADDRESS, openpgp.OpenPGPKey, private=False)
-        encrypted = self._km.encrypt(text, pubkey)
-        self.assertNotEqual(
-            text, encrypted, "Ciphertext is equal to plaintext.")
-        privkey = self._km.get_key(
-            ADDRESS, openpgp.OpenPGPKey, private=True)
-        decrypted = self._km.decrypt(encrypted, privkey)
-        self.assertEqual(text, decrypted,
-                         "Decrypted text differs from plaintext.")
-
+    @inlineCallbacks
     def test_gateway_accepts_valid_email(self):
         """
         Test if SMTP server responds correctly for valid interaction.
@@ -102,223 +89,99 @@ class TestSmtpGateway(TestCaseWithKeyManager):
         # method...
         proto = SMTPFactory(
             u'anotheruser@leap.se',
-            self._km, self._config['host'],
-            self._config['port'],
-            self._config['cert'], self._config['key'],
-            self._config['encrypted_only']).buildProtocol(('127.0.0.1', 0))
+            self._km,
+            self._config['encrypted_only'],
+            outgoing_mail=Mock()).buildProtocol(('127.0.0.1', 0))
         # snip...
         transport = proto_helpers.StringTransport()
         proto.makeConnection(transport)
+        reply = ""
         for i, line in enumerate(self.EMAIL_DATA):
-            proto.lineReceived(line + '\r\n')
-            self.assertMatch(transport.value(),
-                             '\r\n'.join(SMTP_ANSWERS[0:i + 1]),
-                             'Did not get expected answer from gateway.')
+            reply += yield self.getReply(line + '\r\n', proto, transport)
+        self.assertMatch(reply, '\r\n'.join(SMTP_ANSWERS),
+                         'Did not get expected answer from gateway.')
         proto.setTimeout(None)
 
-    def test_message_encrypt(self):
-        """
-        Test if message gets encrypted to destination email.
-        """
-        proto = SMTPFactory(
-            u'anotheruser@leap.se',
-            self._km, self._config['host'],
-            self._config['port'],
-            self._config['cert'], self._config['key'],
-            self._config['encrypted_only']).buildProtocol(('127.0.0.1', 0))
-        fromAddr = Address(ADDRESS_2)
-        dest = User(ADDRESS, 'gateway.leap.se', proto, ADDRESS)
-        m = EncryptedMessage(
-            fromAddr, dest, self._km, self._config['host'],
-            self._config['port'], self._config['cert'], self._config['key'])
-        for line in self.EMAIL_DATA[4:12]:
-            m.lineReceived(line)
-        # m.eomReceived()  # this includes a defer, so we avoid calling it here
-        m.lines.append('')  # add a trailing newline
-        # we need to call the following explicitelly because it was deferred
-        # inside the previous method
-        m._maybe_encrypt_and_sign()
-        # assert structure of encrypted message
-        self.assertTrue('Content-Type' in m._msg)
-        self.assertEqual('multipart/encrypted', m._msg.get_content_type())
-        self.assertEqual('application/pgp-encrypted',
-                         m._msg.get_param('protocol'))
-        self.assertEqual(2, len(m._msg.get_payload()))
-        self.assertEqual('application/pgp-encrypted',
-                         m._msg.get_payload(0).get_content_type())
-        self.assertEqual('application/octet-stream',
-                         m._msg.get_payload(1).get_content_type())
-        privkey = self._km.get_key(
-            ADDRESS, openpgp.OpenPGPKey, private=True)
-        decrypted = self._km.decrypt(
-            m._msg.get_payload(1).get_payload(), privkey)
-        self.assertEqual(
-            '\n' + '\r\n'.join(self.EMAIL_DATA[9:12]) + '\r\n\r\n--\r\n' +
-            'I prefer encrypted email - https://leap.se/key/anotheruser\r\n',
-            decrypted,
-            'Decrypted text differs from plaintext.')
-
-    def test_message_encrypt_sign(self):
-        """
-        Test if message gets encrypted to destination email and signed with
-        sender key.
-        """
-        proto = SMTPFactory(
-            u'anotheruser@leap.se',
-            self._km, self._config['host'],
-            self._config['port'],
-            self._config['cert'], self._config['key'],
-            self._config['encrypted_only']).buildProtocol(('127.0.0.1', 0))
-        user = User(ADDRESS, 'gateway.leap.se', proto, ADDRESS)
-        fromAddr = Address(ADDRESS_2)
-        m = EncryptedMessage(
-            fromAddr, user, self._km, self._config['host'],
-            self._config['port'], self._config['cert'], self._config['key'])
-        for line in self.EMAIL_DATA[4:12]:
-            m.lineReceived(line)
-        # trigger encryption and signing
-        # m.eomReceived()  # this includes a defer, so we avoid calling it here
-        m.lines.append('')  # add a trailing newline
-        # we need to call the following explicitelly because it was deferred
-        # inside the previous method
-        m._maybe_encrypt_and_sign()
-        # assert structure of encrypted message
-        self.assertTrue('Content-Type' in m._msg)
-        self.assertEqual('multipart/encrypted', m._msg.get_content_type())
-        self.assertEqual('application/pgp-encrypted',
-                         m._msg.get_param('protocol'))
-        self.assertEqual(2, len(m._msg.get_payload()))
-        self.assertEqual('application/pgp-encrypted',
-                         m._msg.get_payload(0).get_content_type())
-        self.assertEqual('application/octet-stream',
-                         m._msg.get_payload(1).get_content_type())
-        # decrypt and verify
-        privkey = self._km.get_key(
-            ADDRESS, openpgp.OpenPGPKey, private=True)
-        pubkey = self._km.get_key(ADDRESS_2, openpgp.OpenPGPKey)
-        decrypted = self._km.decrypt(
-            m._msg.get_payload(1).get_payload(), privkey, verify=pubkey)
-        self.assertEqual(
-            '\n' + '\r\n'.join(self.EMAIL_DATA[9:12]) + '\r\n\r\n--\r\n' +
-            'I prefer encrypted email - https://leap.se/key/anotheruser\r\n',
-            decrypted,
-            'Decrypted text differs from plaintext.')
-
-    def test_message_sign(self):
-        """
-        Test if message is signed with sender key.
-        """
-        # mock the key fetching
-        self._km.fetch_keys_from_server = Mock(return_value=[])
-        proto = SMTPFactory(
-            u'anotheruser@leap.se',
-            self._km, self._config['host'],
-            self._config['port'],
-            self._config['cert'], self._config['key'],
-            self._config['encrypted_only']).buildProtocol(('127.0.0.1', 0))
-        user = User('ihavenopubkey@nonleap.se',
-                    'gateway.leap.se', proto, ADDRESS)
-        fromAddr = Address(ADDRESS_2)
-        m = EncryptedMessage(
-            fromAddr, user, self._km, self._config['host'],
-            self._config['port'], self._config['cert'], self._config['key'])
-        for line in self.EMAIL_DATA[4:12]:
-            m.lineReceived(line)
-        # trigger signing
-        # m.eomReceived()  # this includes a defer, so we avoid calling it here
-        m.lines.append('')  # add a trailing newline
-        # we need to call the following explicitelly because it was deferred
-        # inside the previous method
-        m._maybe_encrypt_and_sign()
-        # assert structure of signed message
-        self.assertTrue('Content-Type' in m._msg)
-        self.assertEqual('multipart/signed', m._msg.get_content_type())
-        self.assertEqual('application/pgp-signature',
-                         m._msg.get_param('protocol'))
-        self.assertEqual('pgp-sha512', m._msg.get_param('micalg'))
-        # assert content of message
-        self.assertEqual(
-            '\r\n'.join(self.EMAIL_DATA[9:13]) + '\r\n--\r\n' +
-            'I prefer encrypted email - https://leap.se/key/anotheruser\r\n',
-            m._msg.get_payload(0).get_payload(decode=True))
-        # assert content of signature
-        self.assertTrue(
-            m._msg.get_payload(1).get_payload().startswith(
-                '-----BEGIN PGP SIGNATURE-----\n'),
-            'Message does not start with signature header.')
-        self.assertTrue(
-            m._msg.get_payload(1).get_payload().endswith(
-                '-----END PGP SIGNATURE-----\n'),
-            'Message does not end with signature footer.')
-        # assert signature is valid
-        pubkey = self._km.get_key(ADDRESS_2, openpgp.OpenPGPKey)
-        # replace EOL before verifying (according to rfc3156)
-        signed_text = re.sub('\r?\n', '\r\n',
-                             m._msg.get_payload(0).as_string())
-        self.assertTrue(
-            self._km.verify(signed_text,
-                            pubkey,
-                            detached_sig=m._msg.get_payload(1).get_payload()),
-            'Signature could not be verified.')
-
+    @inlineCallbacks
     def test_missing_key_rejects_address(self):
         """
         Test if server rejects to send unencrypted when 'encrypted_only' is
         True.
         """
         # remove key from key manager
-        pubkey = self._km.get_key(ADDRESS, openpgp.OpenPGPKey)
+        pubkey = yield self._km.get_key(ADDRESS, openpgp.OpenPGPKey)
         pgp = openpgp.OpenPGPScheme(
             self._soledad, gpgbinary=self.GPG_BINARY_PATH)
-        pgp.delete_key(pubkey)
+        yield pgp.delete_key(pubkey)
         # mock the key fetching
-        self._km.fetch_keys_from_server = Mock(return_value=[])
+        self._km._fetch_keys_from_server = Mock(
+            return_value=fail(errors.KeyNotFound()))
         # prepare the SMTP factory
         proto = SMTPFactory(
             u'anotheruser@leap.se',
-            self._km, self._config['host'],
-            self._config['port'],
-            self._config['cert'], self._config['key'],
-            self._config['encrypted_only']).buildProtocol(('127.0.0.1', 0))
+            self._km,
+            self._config['encrypted_only'],
+            outgoing_mail=Mock()).buildProtocol(('127.0.0.1', 0))
         transport = proto_helpers.StringTransport()
         proto.makeConnection(transport)
-        proto.lineReceived(self.EMAIL_DATA[0] + '\r\n')
-        proto.lineReceived(self.EMAIL_DATA[1] + '\r\n')
-        proto.lineReceived(self.EMAIL_DATA[2] + '\r\n')
+        yield self.getReply(self.EMAIL_DATA[0] + '\r\n', proto, transport)
+        yield self.getReply(self.EMAIL_DATA[1] + '\r\n', proto, transport)
+        reply = yield self.getReply(self.EMAIL_DATA[2] + '\r\n',
+                                    proto, transport)
         # ensure the address was rejected
-        lines = transport.value().rstrip().split('\n')
         self.assertEqual(
-            '550 Cannot receive for specified address',
-            lines[-1],
+            '550 Cannot receive for specified address\r\n',
+            reply,
             'Address should have been rejecetd with appropriate message.')
+        proto.setTimeout(None)
 
+    @inlineCallbacks
     def test_missing_key_accepts_address(self):
         """
         Test if server accepts to send unencrypted when 'encrypted_only' is
         False.
         """
         # remove key from key manager
-        pubkey = self._km.get_key(ADDRESS, openpgp.OpenPGPKey)
+        pubkey = yield self._km.get_key(ADDRESS, openpgp.OpenPGPKey)
         pgp = openpgp.OpenPGPScheme(
             self._soledad, gpgbinary=self.GPG_BINARY_PATH)
-        pgp.delete_key(pubkey)
+        yield pgp.delete_key(pubkey)
         # mock the key fetching
-        self._km.fetch_keys_from_server = Mock(return_value=[])
+        self._km._fetch_keys_from_server = Mock(
+            return_value=fail(errors.KeyNotFound()))
         # prepare the SMTP factory with encrypted only equal to false
         proto = SMTPFactory(
             u'anotheruser@leap.se',
-            self._km, self._config['host'],
-            self._config['port'],
-            self._config['cert'], self._config['key'],
-            False).buildProtocol(('127.0.0.1', 0))
+            self._km,
+            False, outgoing_mail=Mock()).buildProtocol(('127.0.0.1', 0))
         transport = proto_helpers.StringTransport()
         proto.makeConnection(transport)
-        proto.lineReceived(self.EMAIL_DATA[0] + '\r\n')
-        proto.lineReceived(self.EMAIL_DATA[1] + '\r\n')
-        proto.lineReceived(self.EMAIL_DATA[2] + '\r\n')
+        yield self.getReply(self.EMAIL_DATA[0] + '\r\n', proto, transport)
+        yield self.getReply(self.EMAIL_DATA[1] + '\r\n', proto, transport)
+        reply = yield self.getReply(self.EMAIL_DATA[2] + '\r\n',
+                                    proto, transport)
         # ensure the address was accepted
-        lines = transport.value().rstrip().split('\n')
         self.assertEqual(
-            '250 Recipient address accepted',
-            lines[-1],
+            '250 Recipient address accepted\r\n',
+            reply,
             'Address should have been accepted with appropriate message.')
+        proto.setTimeout(None)
+
+    def getReply(self, line, proto, transport):
+        proto.lineReceived(line)
+
+        if line[:4] not in ['HELO', 'MAIL', 'RCPT', 'DATA']:
+            return succeed("")
+
+        def check_transport(_):
+            reply = transport.value()
+            if reply:
+                transport.clear()
+                return succeed(reply)
+
+            d = Deferred()
+            d.addCallback(check_transport)
+            reactor.callLater(0, lambda: d.callback(None))
+            return d
+
+        return check_transport(None)
diff --git a/src/leap/mail/sync_hooks.py b/src/leap/mail/sync_hooks.py
new file mode 100644
index 0000000..8efbb7c
--- /dev/null
+++ b/src/leap/mail/sync_hooks.py
@@ -0,0 +1,120 @@
+# -*- coding: utf-8 -*-
+# sync_hooks.py
+# Copyright (C) 2015 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+Soledad PostSync Hooks.
+
+Process every new document of interest after every soledad synchronization,
+using the hooks that soledad exposes via plugins.
+"""
+import logging
+
+from re import compile as regex_compile
+
+from zope.interface import implements
+from twisted.internet import defer
+from twisted.plugin import IPlugin
+from twisted.python import log
+
+from leap.soledad.client.interfaces import ISoledadPostSyncPlugin
+from leap.mail import constants
+
+logger = logging.getLogger(__name__)
+
+
+def _get_doc_type_preffix(s):
+    return s[:2]
+
+
+class MailProcessingPostSyncHook(object):
+    implements(IPlugin, ISoledadPostSyncPlugin)
+
+    META_DOC_PREFFIX = _get_doc_type_preffix(constants.METAMSGID)
+    watched_doc_types = (META_DOC_PREFFIX, )
+
+    _account = None
+    _pending_docs = []
+    _processing_deferreds = []
+
+    def process_received_docs(self, doc_id_list):
+        if self._has_configured_account():
+            process_fun = self._make_uid_index
+        else:
+            self._processing_deferreds = []
+            process_fun = self._queue_doc_id
+
+        for doc_id in doc_id_list:
+            if _get_doc_type_preffix(doc_id) in self.watched_doc_types:
+                log.msg("Mail post-sync hook: processing %s" % doc_id)
+                process_fun(doc_id)
+
+        return defer.gatherResults(self._processing_deferreds)
+
+    def set_account(self, account):
+        self._account = account
+        if account:
+            self._process_queued_docs()
+
+    def _has_configured_account(self):
+        return self._account is not None
+
+    def _queue_doc_id(self, doc_id):
+        self._pending_docs.append(doc_id)
+
+    def _make_uid_index(self, mdoc_id):
+        indexer = self._account.mbox_indexer
+        mbox_uuid = _get_mbox_uuid(mdoc_id)
+        if mbox_uuid:
+            chash = _get_chash_from_mdoc(mdoc_id)
+            logger.debug("Making index table for %s:%s" % (mbox_uuid, chash))
+            index_docid = constants.METAMSGID.format(
+                mbox_uuid=mbox_uuid.replace('-', '_'),
+                chash=chash)
+            # XXX could avoid creating table if I track which ones I already
+            # have seen -- but make sure *it's already created* before
+            # inserting the index entry!.
+            d = indexer.create_table(mbox_uuid)
+            d.addBoth(lambda _: indexer.insert_doc(mbox_uuid, index_docid))
+            self._processing_deferreds.append(d)
+
+    def _process_queued_docs(self):
+        assert(self._has_configured_account())
+        pending = self._pending_docs
+        log.msg("Mail post-sync hook: processing queued docs")
+
+        def remove_pending_docs(res):
+            self._pending_docs = []
+            return res
+
+        d = self.process_received_docs(pending)
+        d.addCallback(remove_pending_docs)
+        return d
+
+
+_mbox_uuid_regex = regex_compile(constants.METAMSGID_MBOX_RE)
+_mdoc_chash_regex = regex_compile(constants.METAMSGID_CHASH_RE)
+
+
+def _get_mbox_uuid(doc_id):
+    matches = _mbox_uuid_regex.findall(doc_id)
+    if matches:
+        return matches[0].replace('_', '-')
+
+
+def _get_chash_from_mdoc(doc_id):
+    matches = _mdoc_chash_regex.findall(doc_id)
+    if matches:
+        return matches[0]
diff --git a/src/leap/mail/tests/__init__.py b/src/leap/mail/tests/__init__.py
new file mode 100644
index 0000000..de0088f
--- /dev/null
+++ b/src/leap/mail/tests/__init__.py
@@ -0,0 +1,331 @@
+# -*- coding: utf-8 -*-
+# __init__.py
+# Copyright (C) 2013 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+"""
+Base classes and keys for leap.mail tests.
+"""
+import os
+import distutils.spawn
+from mock import Mock
+from twisted.internet.defer import gatherResults
+from twisted.trial import unittest
+
+
+from leap.soledad.client import Soledad
+from leap.keymanager import KeyManager
+from leap.keymanager.openpgp import OpenPGPKey
+
+
+from leap.common.testing.basetest import BaseLeapTest
+
+
+def _find_gpg():
+    gpg_path = distutils.spawn.find_executable('gpg')
+    return (os.path.realpath(gpg_path)
+            if gpg_path is not None else "/usr/bin/gpg")
+
+
+class TestCaseWithKeyManager(unittest.TestCase, BaseLeapTest):
+
+    GPG_BINARY_PATH = _find_gpg()
+
+    def setUp(self):
+        self.setUpEnv()
+
+        # setup our own stuff
+        address = 'leap@leap.se'  # user's address in the form user@provider
+        uuid = 'leap@leap.se'
+        passphrase = u'123'
+        secrets_path = os.path.join(self.tempdir, 'secret.gpg')
+        local_db_path = os.path.join(self.tempdir, 'soledad.u1db')
+        server_url = 'http://provider/'
+        cert_file = ''
+
+        self._soledad = Soledad(
+            uuid,
+            passphrase,
+            secrets_path=secrets_path,
+            local_db_path=local_db_path,
+            server_url=server_url,
+            cert_file=cert_file,
+            syncable=False
+        )
+        return self._setup_keymanager(address)
+
+    def _setup_keymanager(self, address):
+        """
+        Set up Key Manager and return a Deferred that will be fired when done.
+        """
+        self._config = {
+            'host': 'https://provider/',
+            'port': 25,
+            'username': address,
+            'password': '<password>',
+            'encrypted_only': True,
+            'cert': u'src/leap/mail/smtp/tests/cert/server.crt',
+            'key': u'src/leap/mail/smtp/tests/cert/server.key',
+        }
+
+        class Response(object):
+            status_code = 200
+            headers = {'content-type': 'application/json'}
+
+            def json(self):
+                return {'address': ADDRESS_2, 'openpgp': PUBLIC_KEY_2}
+
+            def raise_for_status(self):
+                pass
+
+        nickserver_url = ''  # the url of the nickserver
+        self._km = KeyManager(address, nickserver_url, self._soledad,
+                              ca_cert_path='', gpgbinary=self.GPG_BINARY_PATH)
+        self._km._fetcher.put = Mock()
+        self._km._fetcher.get = Mock(return_value=Response())
+
+        d1 = self._km.put_raw_key(PRIVATE_KEY, OpenPGPKey, ADDRESS)
+        d2 = self._km.put_raw_key(PRIVATE_KEY_2, OpenPGPKey, ADDRESS_2)
+        return gatherResults([d1, d2])
+
+    def tearDown(self):
+        self.tearDownEnv()
+
+
+# Key material for testing
+KEY_FINGERPRINT = "E36E738D69173C13D709E44F2F455E2824D18DDF"
+
+ADDRESS = 'leap@leap.se'
+
+PUBLIC_KEY = """
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+Version: GnuPG v1.4.10 (GNU/Linux)
+
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+=MuOY
+-----END PGP PUBLIC KEY BLOCK-----
+"""
+
+PRIVATE_KEY = """
+-----BEGIN PGP PRIVATE KEY BLOCK-----
+Version: GnuPG v1.4.10 (GNU/Linux)
+
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+RZXoH+FTg9UAW87eqU610npOkT6cRaBxaMK/mDtGNdc=
+=JTFu
+-----END PGP PRIVATE KEY BLOCK-----
+"""
+
+ADDRESS_2 = 'anotheruser@leap.se'
+
+PUBLIC_KEY_2 = """
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+Version: GnuPG v1.4.10 (GNU/Linux)
+
+mI0EUYwJXgEEAMbTKHuPJ5/Gk34l9Z06f+0WCXTDXdte1UBoDtZ1erAbudgC4MOR
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+=Thdu
+-----END PGP PUBLIC KEY BLOCK-----
+"""
+
+PRIVATE_KEY_2 = """
+-----BEGIN PGP PRIVATE KEY BLOCK-----
+Version: GnuPG v1.4.10 (GNU/Linux)
+
+lQHYBFGMCV4BBADG0yh7jyefxpN+JfWdOn/tFgl0w13bXtVAaA7WdXqwG7nYAuDD
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+THx7N776fcYHGumbqUMYrxrcZSbNveE6SaK8fphRam1dewM0
+=a5gs
+-----END PGP PRIVATE KEY BLOCK-----
+"""
diff --git a/src/leap/mail/tests/common.py b/src/leap/mail/tests/common.py
new file mode 100644
index 0000000..6ef5d17
--- /dev/null
+++ b/src/leap/mail/tests/common.py
@@ -0,0 +1,99 @@
+# -*- coding: utf-8 -*-
+# common.py
+# Copyright (C) 2014 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+Common utilities for testing Soledad.
+"""
+import os
+import shutil
+import tempfile
+
+from twisted.internet import defer
+from twisted.trial import unittest
+
+from leap.common.testing.basetest import BaseLeapTest
+from leap.soledad.client import Soledad
+
+# TODO move to common module, or Soledad itself
+# XXX remove duplication
+
+TEST_USER = "testuser@leap.se"
+TEST_PASSWD = "1234"
+
+
+def _initialize_soledad(email, gnupg_home, tempdir):
+    """
+    Initializes soledad by hand
+
+    :param email: ID for the user
+    :param gnupg_home: path to home used by gnupg
+    :param tempdir: path to temporal dir
+    :rtype: Soledad instance
+    """
+
+    uuid = "foobar-uuid"
+    passphrase = u"verysecretpassphrase"
+    secret_path = os.path.join(tempdir, "secret.gpg")
+    local_db_path = os.path.join(tempdir, "soledad.u1db")
+    server_url = "https://provider"
+    cert_file = ""
+
+    soledad = Soledad(
+        uuid,
+        passphrase,
+        secret_path,
+        local_db_path,
+        server_url,
+        cert_file,
+        syncable=False)
+
+    return soledad
+
+
+class SoledadTestMixin(unittest.TestCase, BaseLeapTest):
+    """
+    It is **VERY** important that this base is added *AFTER* unittest.TestCase
+    """
+
+    def setUp(self):
+        self.results = []
+
+        self.setUpEnv()
+
+        # Soledad: config info
+        self.gnupg_home = "%s/gnupg" % self.tempdir
+        self.email = 'leap@leap.se'
+
+        # initialize soledad by hand so we can control keys
+        self._soledad = _initialize_soledad(
+            self.email,
+            self.gnupg_home,
+            self.tempdir)
+
+        return defer.succeed(True)
+
+    def tearDown(self):
+        """
+        tearDown method called after each test.
+        """
+        self.results = []
+        try:
+            self._soledad.close()
+        except Exception:
+            print "ERROR WHILE CLOSING SOLEDAD"
+            # logging.exception(exc)
+        finally:
+            self.tearDownEnv()
diff --git a/src/leap/mail/tests/rfc822.message b/src/leap/mail/tests/rfc822.message
new file mode 100644
index 0000000..ee97ab9
--- /dev/null
+++ b/src/leap/mail/tests/rfc822.message
@@ -0,0 +1,86 @@
+Return-Path: <twisted-commits-admin@twistedmatrix.com>
+Delivered-To: exarkun@meson.dyndns.org
+Received: from localhost [127.0.0.1]
+	by localhost with POP3 (fetchmail-6.2.1)
+	for exarkun@localhost (single-drop); Thu, 20 Mar 2003 14:50:20 -0500 (EST)
+Received: from pyramid.twistedmatrix.com (adsl-64-123-27-105.dsl.austtx.swbell.net [64.123.27.105])
+	by intarweb.us (Postfix) with ESMTP id 4A4A513EA4
+	for <exarkun@meson.dyndns.org>; Thu, 20 Mar 2003 14:49:27 -0500 (EST)
+Received: from localhost ([127.0.0.1] helo=pyramid.twistedmatrix.com)
+	by pyramid.twistedmatrix.com with esmtp (Exim 3.35 #1 (Debian))
+	id 18w648-0007Vl-00; Thu, 20 Mar 2003 13:51:04 -0600
+Received: from acapnotic by pyramid.twistedmatrix.com with local (Exim 3.35 #1 (Debian))
+	id 18w63j-0007VK-00
+	for <twisted-commits@twistedmatrix.com>; Thu, 20 Mar 2003 13:50:39 -0600
+To: twisted-commits@twistedmatrix.com
+From: etrepum CVS <etrepum@twistedmatrix.com>
+Reply-To: twisted-python@twistedmatrix.com
+X-Mailer: CVSToys
+Message-Id: <E18w63j-0007VK-00@pyramid.twistedmatrix.com>
+Subject: [Twisted-commits] rebuild now works on python versions from 2.2.0 and up.
+Sender: twisted-commits-admin@twistedmatrix.com
+Errors-To: twisted-commits-admin@twistedmatrix.com
+X-BeenThere: twisted-commits@twistedmatrix.com
+X-Mailman-Version: 2.0.11
+Precedence: bulk
+List-Help: <mailto:twisted-commits-request@twistedmatrix.com?subject=help>
+List-Post: <mailto:twisted-commits@twistedmatrix.com>
+List-Subscribe: <http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-commits>,
+	<mailto:twisted-commits-request@twistedmatrix.com?subject=subscribe>
+List-Id: <twisted-commits.twistedmatrix.com>
+List-Unsubscribe: <http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-commits>,
+	<mailto:twisted-commits-request@twistedmatrix.com?subject=unsubscribe>
+List-Archive: <http://twistedmatrix.com/pipermail/twisted-commits/>
+Date: Thu, 20 Mar 2003 13:50:39 -0600
+
+Modified files:
+Twisted/twisted/python/rebuild.py 1.19 1.20
+
+Log message:
+rebuild now works on python versions from 2.2.0 and up.
+
+
+ViewCVS links:
+http://twistedmatrix.com/users/jh.twistd/viewcvs/cgi/viewcvs.cgi/twisted/python/rebuild.py.diff?r1=text&tr1=1.19&r2=text&tr2=1.20&cvsroot=Twisted
+
+Index: Twisted/twisted/python/rebuild.py
+diff -u Twisted/twisted/python/rebuild.py:1.19 Twisted/twisted/python/rebuild.py:1.20
+--- Twisted/twisted/python/rebuild.py:1.19	Fri Jan 17 13:50:49 2003
++++ Twisted/twisted/python/rebuild.py	Thu Mar 20 11:50:08 2003
+@@ -206,15 +206,27 @@
+             clazz.__dict__.clear()
+             clazz.__getattr__ = __getattr__
+             clazz.__module__ = module.__name__
++    if newclasses:
++        import gc
++        if (2, 2, 0) <= sys.version_info[:3] < (2, 2, 2):
++            hasBrokenRebuild = 1
++            gc_objects = gc.get_objects()
++        else:
++            hasBrokenRebuild = 0
+     for nclass in newclasses:
+         ga = getattr(module, nclass.__name__)
+         if ga is nclass:
+             log.msg("WARNING: new-class %s not replaced by reload!" % reflect.qual(nclass))
+         else:
+-            import gc
+-            for r in gc.get_referrers(nclass):
+-                if isinstance(r, nclass):
++            if hasBrokenRebuild:
++                for r in gc_objects:
++                    if not getattr(r, '__class__', None) is nclass:
++                        continue
+                     r.__class__ = ga
++            else:
++                for r in gc.get_referrers(nclass):
++                    if getattr(r, '__class__', None) is nclass:
++                        r.__class__ = ga
+     if doLog:
+         log.msg('')
+         log.msg('  (fixing   %s): ' % str(module.__name__))
+
+
+_______________________________________________
+Twisted-commits mailing list
+Twisted-commits@twistedmatrix.com
+http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-commits
diff --git a/src/leap/mail/tests/rfc822.multi-minimal.message b/src/leap/mail/tests/rfc822.multi-minimal.message
new file mode 100644
index 0000000..582297c
--- /dev/null
+++ b/src/leap/mail/tests/rfc822.multi-minimal.message
@@ -0,0 +1,16 @@
+Content-Type: multipart/mixed; boundary="===============6203542367371144092=="
+MIME-Version: 1.0
+Subject: [TEST] 010 - Inceptos cum lorem risus congue
+From: testmailbitmaskspam@gmail.com
+To: test_c5@dev.bitmask.net
+
+--===============6203542367371144092==
+Content-Type: text/plain; charset="us-ascii"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+
+Howdy from python!
+The subject: [TEST] 010 - Inceptos cum lorem risus congue
+Current date & time: Wed Jan  8 16:36:21 2014
+Trying to attach: []
+--===============6203542367371144092==--
diff --git a/src/leap/mail/tests/rfc822.multi-nested.message b/src/leap/mail/tests/rfc822.multi-nested.message
new file mode 100644
index 0000000..694bef5
--- /dev/null
+++ b/src/leap/mail/tests/rfc822.multi-nested.message
@@ -0,0 +1,619 @@
+From: TEST <test.bitmask@example.com>
+Content-Type: multipart/alternative;
+	boundary="Apple-Mail=_F4EF9C8E-2E66-4FC6-8840-F435ADBED5C8"
+X-Smtp-Server: smtp.example.com:test.bitmask
+Subject: test simple attachment
+X-Universally-Unique-Identifier: 0ea1b4b2-cdb8-43c3-b54c-dc88a19c6e0a
+Date: Wed, 8 Jul 2015 04:25:56 +0900
+Message-Id: <47278179-628A-43F5-95C9-BC7E1753C521@example.com>
+To: test_alpha14_001@dev.bitmask.net
+Mime-Version: 1.0 (Apple Message framework v1251.1)
+
+
+--Apple-Mail=_F4EF9C8E-2E66-4FC6-8840-F435ADBED5C8
+Content-Transfer-Encoding: 7bit
+Content-Type: text/plain;
+	charset=us-ascii
+
+this is a simple attachment
+--Apple-Mail=_F4EF9C8E-2E66-4FC6-8840-F435ADBED5C8
+Content-Type: multipart/related;
+	type="text/html";
+	boundary="Apple-Mail=_C7D5288F-B043-4A7F-AF3F-1EDF1A78438B"
+
+
+--Apple-Mail=_C7D5288F-B043-4A7F-AF3F-1EDF1A78438B
+Content-Transfer-Encoding: 7bit
+Content-Type: text/html;
+	charset=us-ascii
+
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+
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diff --git a/src/leap/mail/tests/rfc822.multi-signed.message b/src/leap/mail/tests/rfc822.multi-signed.message
new file mode 100644
index 0000000..9907c2d
--- /dev/null
+++ b/src/leap/mail/tests/rfc822.multi-signed.message
@@ -0,0 +1,238 @@
+Date: Mon, 6 Jan 2014 04:40:47 -0400
+From: Kali Kaneko <kali@leap.se>
+To: penguin@example.com
+Subject: signed message
+Message-ID: <20140106084047.GA21317@samsara.lan>
+MIME-Version: 1.0
+Content-Type: multipart/signed; micalg=pgp-sha1;
+	protocol="application/pgp-signature"; boundary="z9ECzHErBrwFF8sy"
+Content-Disposition: inline
+User-Agent: Mutt/1.5.21 (2012-12-30)
+
+
+--z9ECzHErBrwFF8sy
+Content-Type: multipart/mixed; boundary="z0eOaCaDLjvTGF2l"
+Content-Disposition: inline
+
+
+--z0eOaCaDLjvTGF2l
+Content-Type: text/plain; charset=utf-8
+Content-Disposition: inline
+Content-Transfer-Encoding: quoted-printable
+
+This is an example of a signed message,
+with attachments.
+
+
+--=20
+Nihil sine chao! =E2=88=B4
+
+--z0eOaCaDLjvTGF2l
+Content-Type: text/plain; charset=us-ascii
+Content-Disposition: attachment; filename="attach.txt"
+
+this is attachment in plain text.
+
+--z0eOaCaDLjvTGF2l
+Content-Type: application/octet-stream
+Content-Disposition: attachment; filename="hack.ico"
+Content-Transfer-Encoding: base64
+
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diff --git a/src/leap/mail/tests/rfc822.multi.message b/src/leap/mail/tests/rfc822.multi.message
new file mode 100644
index 0000000..30f74e5
--- /dev/null
+++ b/src/leap/mail/tests/rfc822.multi.message
@@ -0,0 +1,96 @@
+Date: Fri, 19 May 2000 09:55:48 -0400 (EDT)

+From: Doug Sauder <doug@penguin.example.com>

+To: Joe Blow <blow@example.com>

+Subject: Test message from PINE

+Message-ID: <Pine.LNX.4.21.0005190951410.8452-102000@penguin.example.com>

+MIME-Version: 1.0

+Content-Type: MULTIPART/MIXED; BOUNDARY="-1463757054-952513540-958744548=:8452"

+

+  This message is in MIME format.  The first part should be readable text,

+  while the remaining parts are likely unreadable without MIME-aware tools.

+  Send mail to mime@docserver.cac.washington.edu for more info.

+

+---1463757054-952513540-958744548=:8452

+Content-Type: TEXT/PLAIN; charset=US-ASCII

+

+This is a test message from PINE MUA.

+

+

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+Content-Transfer-Encoding: BASE64

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+Content-Description: A PNG graphic file

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diff --git a/src/leap/mail/tests/rfc822.plain.message b/src/leap/mail/tests/rfc822.plain.message
new file mode 100644
index 0000000..fc627c3
--- /dev/null
+++ b/src/leap/mail/tests/rfc822.plain.message
@@ -0,0 +1,66 @@
+From pyar-bounces@python.org.ar Wed Jan  8 14:46:02 2014
+Return-Path: <pyar-bounces@python.org.ar>
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diff --git a/src/leap/mail/tests/test_mail.py b/src/leap/mail/tests/test_mail.py
new file mode 100644
index 0000000..9f40ffb
--- /dev/null
+++ b/src/leap/mail/tests/test_mail.py
@@ -0,0 +1,399 @@
+# -*- coding: utf-8 -*-
+# test_mail.py
+# Copyright (C) 2014 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+Tests for the mail module.
+"""
+import os
+import time
+import uuid
+
+from functools import partial
+from email.parser import Parser
+from email.Utils import formatdate
+
+from leap.mail.adaptors.soledad import SoledadMailAdaptor
+from leap.mail.mail import MessageCollection, Account, _unpack_headers
+from leap.mail.mailbox_indexer import MailboxIndexer
+from leap.mail.tests.common import SoledadTestMixin
+
+HERE = os.path.split(os.path.abspath(__file__))[0]
+
+
+def _get_raw_msg(multi=False):
+    if multi:
+        sample = "rfc822.multi.message"
+    else:
+        sample = "rfc822.message"
+    with open(os.path.join(HERE, sample)) as f:
+        raw = f.read()
+    return raw
+
+
+def _get_parsed_msg(multi=False):
+    mail_parser = Parser()
+    raw = _get_raw_msg(multi=multi)
+    return mail_parser.parsestr(raw)
+
+
+def _get_msg_time():
+    timestamp = time.mktime((2010, 12, 12, 1, 1, 1, 1, 1, 1))
+    return formatdate(timestamp)
+
+
+class CollectionMixin(object):
+
+    def get_collection(self, mbox_collection=True, mbox_name=None,
+                       mbox_uuid=None):
+        """
+        Get a collection for tests.
+        """
+        adaptor = SoledadMailAdaptor()
+        store = self._soledad
+        adaptor.store = store
+
+        if mbox_collection:
+            mbox_indexer = MailboxIndexer(store)
+            mbox_name = mbox_name or "TestMbox"
+            mbox_uuid = mbox_uuid or str(uuid.uuid4())
+        else:
+            mbox_indexer = mbox_name = None
+
+        def get_collection_from_mbox_wrapper(wrapper):
+            wrapper.uuid = mbox_uuid
+            return MessageCollection(
+                adaptor, store,
+                mbox_indexer=mbox_indexer, mbox_wrapper=wrapper)
+
+        d = adaptor.initialize_store(store)
+        if mbox_collection:
+            d.addCallback(lambda _: mbox_indexer.create_table(mbox_uuid))
+        d.addCallback(lambda _: adaptor.get_or_create_mbox(store, mbox_name))
+        d.addCallback(get_collection_from_mbox_wrapper)
+        return d
+
+
+# TODO profile add_msg. Why are these tests so SLOW??!
+class MessageTestCase(SoledadTestMixin, CollectionMixin):
+    """
+    Tests for the Message class.
+    """
+    msg_flags = ('\Recent', '\Unseen', '\TestFlag')
+    msg_tags = ('important', 'todo', 'wonderful')
+    internal_date = "19-Mar-2015 19:22:21 -0500"
+
+    maxDiff = None
+
+    def _do_insert_msg(self, multi=False):
+        """
+        Inserts and return a regular message, for tests.
+        """
+        def insert_message(collection):
+            self._mbox_uuid = collection.mbox_uuid
+            return collection.add_msg(
+                raw, flags=self.msg_flags, tags=self.msg_tags,
+                date=self.internal_date)
+
+        raw = _get_raw_msg(multi=multi)
+
+        d = self.get_collection()
+        d.addCallback(insert_message)
+        return d
+
+    def get_inserted_msg(self, multi=False):
+        d = self._do_insert_msg(multi=multi)
+        d.addCallback(lambda _: self.get_collection(mbox_uuid=self._mbox_uuid))
+        d.addCallback(lambda col: col.get_message_by_uid(1))
+        return d
+
+    def test_get_flags(self):
+        d = self.get_inserted_msg()
+        d.addCallback(self._test_get_flags_cb)
+        return d
+
+    def _test_get_flags_cb(self, msg):
+        self.assertTrue(msg is not None)
+        self.assertEquals(tuple(msg.get_flags()), self.msg_flags)
+
+    def test_get_internal_date(self):
+        d = self.get_inserted_msg()
+        d.addCallback(self._test_get_internal_date_cb)
+
+    def _test_get_internal_date_cb(self, msg):
+        self.assertTrue(msg is not None)
+        self.assertDictEqual(msg.get_internal_date(),
+                             self.internal_date)
+
+    def test_get_headers(self):
+        d = self.get_inserted_msg()
+        d.addCallback(self._test_get_headers_cb)
+        return d
+
+    def _test_get_headers_cb(self, msg):
+        self.assertTrue(msg is not None)
+        expected = [
+            (str(key.lower()), str(value))
+            for (key, value) in _get_parsed_msg().items()]
+        self.assertItemsEqual(_unpack_headers(msg.get_headers()), expected)
+
+    def test_get_body_file(self):
+        d = self.get_inserted_msg(multi=True)
+        d.addCallback(self._test_get_body_file_cb)
+        return d
+
+    def _test_get_body_file_cb(self, msg):
+        self.assertTrue(msg is not None)
+        orig = _get_parsed_msg(multi=True)
+        expected = orig.get_payload()[0].get_payload()
+        d = msg.get_body_file(self._soledad)
+
+        def assert_body(fd):
+            self.assertTrue(fd is not None)
+            self.assertEqual(fd.read(), expected)
+        d.addCallback(assert_body)
+        return d
+
+    def test_get_size(self):
+        d = self.get_inserted_msg()
+        d.addCallback(self._test_get_size_cb)
+        return d
+
+    def _test_get_size_cb(self, msg):
+        self.assertTrue(msg is not None)
+        expected = len(_get_parsed_msg().as_string())
+        self.assertEqual(msg.get_size(), expected)
+
+    def test_is_multipart_no(self):
+        d = self.get_inserted_msg()
+        d.addCallback(self._test_is_multipart_no_cb)
+        return d
+
+    def _test_is_multipart_no_cb(self, msg):
+        self.assertTrue(msg is not None)
+        expected = _get_parsed_msg().is_multipart()
+        self.assertEqual(msg.is_multipart(), expected)
+
+    def test_is_multipart_yes(self):
+        d = self.get_inserted_msg(multi=True)
+        d.addCallback(self._test_is_multipart_yes_cb)
+        return d
+
+    def _test_is_multipart_yes_cb(self, msg):
+        self.assertTrue(msg is not None)
+        expected = _get_parsed_msg(multi=True).is_multipart()
+        self.assertEqual(msg.is_multipart(), expected)
+
+    def test_get_subpart(self):
+        d = self.get_inserted_msg(multi=True)
+        d.addCallback(self._test_get_subpart_cb)
+        return d
+
+    def _test_get_subpart_cb(self, msg):
+        self.assertTrue(msg is not None)
+
+    def test_get_tags(self):
+        d = self.get_inserted_msg()
+        d.addCallback(self._test_get_tags_cb)
+        return d
+
+    def _test_get_tags_cb(self, msg):
+        self.assertTrue(msg is not None)
+        self.assertEquals(msg.get_tags(), self.msg_tags)
+
+
+class MessageCollectionTestCase(SoledadTestMixin, CollectionMixin):
+    """
+    Tests for the MessageCollection class.
+    """
+    _mbox_uuid = None
+
+    def assert_collection_count(self, _, expected):
+        def _assert_count(count):
+            self.assertEqual(count, expected)
+
+        d = self.get_collection()
+        d.addCallback(lambda col: col.count())
+        d.addCallback(_assert_count)
+        return d
+
+    def add_msg_to_collection(self):
+        raw = _get_raw_msg()
+
+        def add_msg_to_collection(collection):
+            # We keep the uuid in case we need to instantiate the same
+            # collection afterwards.
+            self._mbox_uuid = collection.mbox_uuid
+            d = collection.add_msg(raw, date=_get_msg_time())
+            return d
+
+        d = self.get_collection()
+        d.addCallback(add_msg_to_collection)
+        return d
+
+    def test_is_mailbox_collection(self):
+        d = self.get_collection()
+        d.addCallback(self._test_is_mailbox_collection_cb)
+        return d
+
+    def _test_is_mailbox_collection_cb(self, collection):
+        self.assertTrue(collection.is_mailbox_collection())
+
+    def test_get_uid_next(self):
+        d = self.add_msg_to_collection()
+        d.addCallback(lambda _: self.get_collection())
+        d.addCallback(lambda col: col.get_uid_next())
+        d.addCallback(self._test_get_uid_next_cb)
+
+    def _test_get_uid_next_cb(self, next_uid):
+        self.assertEqual(next_uid, 2)
+
+    def test_add_and_count_msg(self):
+        d = self.add_msg_to_collection()
+        d.addCallback(self._test_add_and_count_msg_cb)
+        return d
+
+    def _test_add_and_count_msg_cb(self, _):
+        return partial(self.assert_collection_count, expected=1)
+
+    def test_copy_msg(self):
+        # TODO ---- update when implementing messagecopier
+        # interface
+        pass
+    test_copy_msg.skip = "Not yet implemented"
+
+    def test_delete_msg(self):
+        d = self.add_msg_to_collection()
+
+        def del_msg(collection):
+            def _delete_it(msg):
+                self.assertTrue(msg is not None)
+                return collection.delete_msg(msg)
+
+            d = collection.get_message_by_uid(1)
+            d.addCallback(_delete_it)
+            return d
+
+        # We need to instantiate an mbox collection with the same uuid that
+        # the one in which we inserted the doc.
+        d.addCallback(lambda _: self.get_collection(mbox_uuid=self._mbox_uuid))
+        d.addCallback(del_msg)
+        d.addCallback(self._test_delete_msg_cb)
+        return d
+
+    def _test_delete_msg_cb(self, _):
+        return partial(self.assert_collection_count, expected=0)
+
+    def test_update_flags(self):
+        d = self.add_msg_to_collection()
+        d.addCallback(self._test_update_flags_cb)
+        return d
+
+    def _test_update_flags_cb(self, msg):
+        pass
+
+    def test_update_tags(self):
+        d = self.add_msg_to_collection()
+        d.addCallback(self._test_update_tags_cb)
+        return d
+
+    def _test_update_tags_cb(self, msg):
+        pass
+
+
+class AccountTestCase(SoledadTestMixin):
+    """
+    Tests for the Account class.
+    """
+    def get_account(self):
+        store = self._soledad
+        return Account(store)
+
+    def test_add_mailbox(self):
+        acc = self.get_account()
+        d = acc.callWhenReady(lambda _: acc.add_mailbox("TestMailbox"))
+        d.addCallback(lambda _: acc.list_all_mailbox_names())
+        d.addCallback(self._test_add_mailbox_cb)
+        return d
+
+    def _test_add_mailbox_cb(self, mboxes):
+        expected = ['INBOX', 'TestMailbox']
+        self.assertItemsEqual(mboxes, expected)
+
+    def test_delete_mailbox(self):
+        acc = self.get_account()
+        d = acc.callWhenReady(lambda _: acc.delete_mailbox("Inbox"))
+        d.addCallback(lambda _: acc.list_all_mailbox_names())
+        d.addCallback(self._test_delete_mailbox_cb)
+        return d
+
+    def _test_delete_mailbox_cb(self, mboxes):
+        expected = []
+        self.assertItemsEqual(mboxes, expected)
+
+    def test_rename_mailbox(self):
+        acc = self.get_account()
+        d = acc.callWhenReady(lambda _: acc.add_mailbox("OriginalMailbox"))
+        d.addCallback(lambda _: acc.rename_mailbox(
+            "OriginalMailbox", "RenamedMailbox"))
+        d.addCallback(lambda _: acc.list_all_mailbox_names())
+        d.addCallback(self._test_rename_mailbox_cb)
+        return d
+
+    def _test_rename_mailbox_cb(self, mboxes):
+        expected = ['INBOX', 'RenamedMailbox']
+        self.assertItemsEqual(mboxes, expected)
+
+    def test_get_all_mailboxes(self):
+        acc = self.get_account()
+        d = acc.callWhenReady(lambda _: acc.add_mailbox("OneMailbox"))
+        d.addCallback(lambda _: acc.add_mailbox("TwoMailbox"))
+        d.addCallback(lambda _: acc.add_mailbox("ThreeMailbox"))
+        d.addCallback(lambda _: acc.add_mailbox("anotherthing"))
+        d.addCallback(lambda _: acc.add_mailbox("anotherthing2"))
+        d.addCallback(lambda _: acc.get_all_mailboxes())
+        d.addCallback(self._test_get_all_mailboxes_cb)
+        return d
+
+    def _test_get_all_mailboxes_cb(self, mailboxes):
+        expected = ["INBOX", "OneMailbox", "TwoMailbox", "ThreeMailbox",
+                    "anotherthing", "anotherthing2"]
+        names = [m.mbox for m in mailboxes]
+        self.assertItemsEqual(names, expected)
+
+    def test_get_collection_by_mailbox(self):
+        acc = self.get_account()
+        d = acc.callWhenReady(lambda _: acc.get_collection_by_mailbox("INBOX"))
+        d.addCallback(self._test_get_collection_by_mailbox_cb)
+        return d
+
+    def _test_get_collection_by_mailbox_cb(self, collection):
+        self.assertTrue(collection.is_mailbox_collection())
+
+        def assert_uid_next_empty_collection(uid):
+            self.assertEqual(uid, 1)
+        d = collection.get_uid_next()
+        d.addCallback(assert_uid_next_empty_collection)
+        return d
+
+    def test_get_collection_by_docs(self):
+        pass
+
+    test_get_collection_by_docs.skip = "Not yet implemented"
+
+    def test_get_collection_by_tag(self):
+        pass
+
+    test_get_collection_by_tag.skip = "Not yet implemented"
diff --git a/src/leap/mail/tests/test_mailbox_indexer.py b/src/leap/mail/tests/test_mailbox_indexer.py
new file mode 100644
index 0000000..b82fd2d
--- /dev/null
+++ b/src/leap/mail/tests/test_mailbox_indexer.py
@@ -0,0 +1,250 @@
+# -*- coding: utf-8 -*-
+# test_mailbox_indexer.py
+# Copyright (C) 2014 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+Tests for the mailbox_indexer module.
+"""
+import uuid
+from functools import partial
+
+from leap.mail import mailbox_indexer as mi
+from leap.mail.tests.common import SoledadTestMixin
+
+hash_test0 = '590c9f8430c7435807df8ba9a476e3f1295d46ef210f6efae2043a4c085a569e'
+hash_test1 = '1b4f0e9851971998e732078544c96b36c3d01cedf7caa332359d6f1d83567014'
+hash_test2 = '60303ae22b998861bce3b28f33eec1be758a213c86c93c076dbe9f558c11c752'
+hash_test3 = 'fd61a03af4f77d870fc21e05e7e80678095c92d808cfb3b5c279ee04c74aca13'
+hash_test4 = 'a4e624d686e03ed2767c0abd85c14426b0b1157d2ce81d27bb4fe4f6f01d688a'
+
+
+def fmt_hash(mailbox_uuid, hash):
+    return "M-" + mailbox_uuid.replace('-', '_') + "-" + hash
+
+mbox_id = str(uuid.uuid4())
+
+
+class MailboxIndexerTestCase(SoledadTestMixin):
+    """
+    Tests for the MailboxUID class.
+    """
+    def get_mbox_uid(self):
+        m_uid = mi.MailboxIndexer(self._soledad)
+        return m_uid
+
+    def list_mail_tables_cb(self, ignored):
+        def filter_mailuid_tables(tables):
+            filtered = [
+                table[0] for table in tables if
+                table[0].startswith(mi.MailboxIndexer.table_preffix)]
+            return filtered
+
+        sql = "SELECT name FROM sqlite_master WHERE type='table';"
+        d = self._soledad.raw_sqlcipher_query(sql)
+        d.addCallback(filter_mailuid_tables)
+        return d
+
+    def select_uid_rows(self, mailbox):
+        sql = "SELECT * FROM %s%s;" % (
+            mi.MailboxIndexer.table_preffix, mailbox.replace('-', '_'))
+        d = self._soledad.raw_sqlcipher_query(sql)
+        return d
+
+    def test_create_table(self):
+        def assert_table_created(tables):
+            self.assertEqual(
+                tables, ["leapmail_uid_" + mbox_id.replace('-', '_')])
+
+        m_uid = self.get_mbox_uid()
+        d = m_uid.create_table(mbox_id)
+        d.addCallback(self.list_mail_tables_cb)
+        d.addCallback(assert_table_created)
+        return d
+
+    def test_create_and_delete_table(self):
+        def assert_table_deleted(tables):
+            self.assertEqual(tables, [])
+
+        m_uid = self.get_mbox_uid()
+        d = m_uid.create_table(mbox_id)
+        d.addCallback(lambda _: m_uid.delete_table(mbox_id))
+        d.addCallback(self.list_mail_tables_cb)
+        d.addCallback(assert_table_deleted)
+        return d
+
+    def test_insert_doc(self):
+        m_uid = self.get_mbox_uid()
+
+        h1 = fmt_hash(mbox_id, hash_test0)
+        h2 = fmt_hash(mbox_id, hash_test1)
+        h3 = fmt_hash(mbox_id, hash_test2)
+        h4 = fmt_hash(mbox_id, hash_test3)
+        h5 = fmt_hash(mbox_id, hash_test4)
+
+        def assert_uid_rows(rows):
+            expected = [(1, h1), (2, h2), (3, h3), (4, h4), (5, h5)]
+            self.assertEquals(rows, expected)
+
+        d = m_uid.create_table(mbox_id)
+        d.addCallback(lambda _: m_uid.insert_doc(mbox_id, h1))
+        d.addCallback(lambda _: m_uid.insert_doc(mbox_id, h2))
+        d.addCallback(lambda _: m_uid.insert_doc(mbox_id, h3))
+        d.addCallback(lambda _: m_uid.insert_doc(mbox_id, h4))
+        d.addCallback(lambda _: m_uid.insert_doc(mbox_id, h5))
+        d.addCallback(lambda _: self.select_uid_rows(mbox_id))
+        d.addCallback(assert_uid_rows)
+        return d
+
+    def test_insert_doc_return(self):
+        m_uid = self.get_mbox_uid()
+
+        def assert_rowid(rowid, expected=None):
+            self.assertEqual(rowid, expected)
+
+        h1 = fmt_hash(mbox_id, hash_test0)
+        h2 = fmt_hash(mbox_id, hash_test1)
+        h3 = fmt_hash(mbox_id, hash_test2)
+
+        d = m_uid.create_table(mbox_id)
+        d.addCallback(lambda _: m_uid.insert_doc(mbox_id, h1))
+        d.addCallback(partial(assert_rowid, expected=1))
+        d.addCallback(lambda _: m_uid.insert_doc(mbox_id, h2))
+        d.addCallback(partial(assert_rowid, expected=2))
+        d.addCallback(lambda _: m_uid.insert_doc(mbox_id, h3))
+        d.addCallback(partial(assert_rowid, expected=3))
+        return d
+
+    def test_delete_doc(self):
+        m_uid = self.get_mbox_uid()
+
+        h1 = fmt_hash(mbox_id, hash_test0)
+        h2 = fmt_hash(mbox_id, hash_test1)
+        h3 = fmt_hash(mbox_id, hash_test2)
+        h4 = fmt_hash(mbox_id, hash_test3)
+        h5 = fmt_hash(mbox_id, hash_test4)
+
+        def assert_uid_rows(rows):
+            expected = [(4, h4), (5, h5)]
+            self.assertEquals(rows, expected)
+
+        d = m_uid.create_table(mbox_id)
+        d.addCallback(lambda _: m_uid.insert_doc(mbox_id, h1))
+        d.addCallback(lambda _: m_uid.insert_doc(mbox_id, h2))
+        d.addCallback(lambda _: m_uid.insert_doc(mbox_id, h3))
+        d.addCallback(lambda _: m_uid.insert_doc(mbox_id, h4))
+        d.addCallback(lambda _: m_uid.insert_doc(mbox_id, h5))
+
+        d.addCallbacks(lambda _: m_uid.delete_doc_by_uid(mbox_id, 1))
+        d.addCallbacks(lambda _: m_uid.delete_doc_by_uid(mbox_id, 2))
+        d.addCallbacks(lambda _: m_uid.delete_doc_by_hash(mbox_id, h3))
+
+        d.addCallback(lambda _: self.select_uid_rows(mbox_id))
+        d.addCallback(assert_uid_rows)
+        return d
+
+    def test_get_doc_id_from_uid(self):
+        m_uid = self.get_mbox_uid()
+
+        h1 = fmt_hash(mbox_id, hash_test0)
+
+        def assert_doc_hash(res):
+            self.assertEqual(res, h1)
+
+        d = m_uid.create_table(mbox_id)
+        d.addCallback(lambda _: m_uid.insert_doc(mbox_id, h1))
+        d.addCallback(lambda _: m_uid.get_doc_id_from_uid(mbox_id, 1))
+        d.addCallback(assert_doc_hash)
+        return d
+
+    def test_count(self):
+        m_uid = self.get_mbox_uid()
+
+        h1 = fmt_hash(mbox_id, hash_test0)
+        h2 = fmt_hash(mbox_id, hash_test1)
+        h3 = fmt_hash(mbox_id, hash_test2)
+        h4 = fmt_hash(mbox_id, hash_test3)
+        h5 = fmt_hash(mbox_id, hash_test4)
+
+        d = m_uid.create_table(mbox_id)
+        d.addCallback(lambda _: m_uid.insert_doc(mbox_id, h1))
+        d.addCallback(lambda _: m_uid.insert_doc(mbox_id, h2))
+        d.addCallback(lambda _: m_uid.insert_doc(mbox_id, h3))
+        d.addCallback(lambda _: m_uid.insert_doc(mbox_id, h4))
+        d.addCallback(lambda _: m_uid.insert_doc(mbox_id, h5))
+
+        def assert_count_after_inserts(count):
+            self.assertEquals(count, 5)
+
+        d.addCallback(lambda _: m_uid.count(mbox_id))
+        d.addCallback(assert_count_after_inserts)
+
+        d.addCallbacks(lambda _: m_uid.delete_doc_by_uid(mbox_id, 1))
+        d.addCallbacks(lambda _: m_uid.delete_doc_by_uid(mbox_id, 2))
+
+        def assert_count_after_deletions(count):
+            self.assertEquals(count, 3)
+
+        d.addCallback(lambda _: m_uid.count(mbox_id))
+        d.addCallback(assert_count_after_deletions)
+        return d
+
+    def test_get_next_uid(self):
+        m_uid = self.get_mbox_uid()
+
+        h1 = fmt_hash(mbox_id, hash_test0)
+        h2 = fmt_hash(mbox_id, hash_test1)
+        h3 = fmt_hash(mbox_id, hash_test2)
+        h4 = fmt_hash(mbox_id, hash_test3)
+        h5 = fmt_hash(mbox_id, hash_test4)
+
+        d = m_uid.create_table(mbox_id)
+        d.addCallback(lambda _: m_uid.insert_doc(mbox_id, h1))
+        d.addCallback(lambda _: m_uid.insert_doc(mbox_id, h2))
+        d.addCallback(lambda _: m_uid.insert_doc(mbox_id, h3))
+        d.addCallback(lambda _: m_uid.insert_doc(mbox_id, h4))
+        d.addCallback(lambda _: m_uid.insert_doc(mbox_id, h5))
+
+        def assert_next_uid(result, expected=1):
+            self.assertEquals(result, expected)
+
+        d.addCallback(lambda _: m_uid.get_next_uid(mbox_id))
+        d.addCallback(partial(assert_next_uid, expected=6))
+        return d
+
+    def test_all_uid_iter(self):
+
+        m_uid = self.get_mbox_uid()
+
+        h1 = fmt_hash(mbox_id, hash_test0)
+        h2 = fmt_hash(mbox_id, hash_test1)
+        h3 = fmt_hash(mbox_id, hash_test2)
+        h4 = fmt_hash(mbox_id, hash_test3)
+        h5 = fmt_hash(mbox_id, hash_test4)
+
+        d = m_uid.create_table(mbox_id)
+        d.addCallback(lambda _: m_uid.insert_doc(mbox_id, h1))
+        d.addCallback(lambda _: m_uid.insert_doc(mbox_id, h2))
+        d.addCallback(lambda _: m_uid.insert_doc(mbox_id, h3))
+        d.addCallback(lambda _: m_uid.insert_doc(mbox_id, h4))
+        d.addCallback(lambda _: m_uid.insert_doc(mbox_id, h5))
+        d.addCallback(lambda _: m_uid.delete_doc_by_uid(mbox_id, 1))
+        d.addCallback(lambda _: m_uid.delete_doc_by_uid(mbox_id, 4))
+
+        def assert_all_uid(result, expected=[2, 3, 5]):
+            self.assertEquals(result, expected)
+
+        d.addCallback(lambda _: m_uid.all_uid_iter(mbox_id))
+        d.addCallback(partial(assert_all_uid))
+        return d
diff --git a/src/leap/mail/utils.py b/src/leap/mail/utils.py
index fed24b3..64fca98 100644
--- a/src/leap/mail/utils.py
+++ b/src/leap/mail/utils.py
@@ -17,12 +17,15 @@
 """
 Mail utilities.
 """
+from email.utils import parseaddr
 import json
 import re
 import traceback
 import Queue
 
 from leap.soledad.common.document import SoledadDocument
+from leap.common.check import leap_assert_type
+from twisted.mail import smtp
 
 
 CHARSET_PATTERN = r"""charset=([\w-]+)"""
@@ -42,9 +45,12 @@ def first(things):
 def empty(thing):
     """
     Return True if a thing is None or its length is zero.
+    If thing is a number (int, float, long), return False.
     """
     if thing is None:
         return True
+    if isinstance(thing, (int, float, long)):
+        return False
     if isinstance(thing, SoledadDocument):
         thing = thing.content
     try:
@@ -224,10 +230,31 @@ def accumulator_queue(fun, lim):
     return _accumulator
 
 
+def validate_address(address):
+    """
+    Validate C{address} as defined in RFC 2822.
+
+    :param address: The address to be validated.
+    :type address: str
+
+    @return: A valid address.
+    @rtype: str
+
+    @raise smtp.SMTPBadRcpt: Raised if C{address} is invalid.
+    """
+    leap_assert_type(address, str)
+    # in the following, the address is parsed as described in RFC 2822 and
+    # ('', '') is returned if the parse fails.
+    _, address = parseaddr(address)
+    if address == '':
+        raise smtp.SMTPBadRcpt(address)
+    return address
+
 #
 # String manipulation
 #
 
+
 class CustomJsonScanner(object):
     """
     This class is a context manager definition used to monkey patch the default
@@ -273,13 +300,13 @@ class CustomJsonScanner(object):
         end = s.find("\"", idx)
         while not found:
             try:
-                if s[end-1] != "\\":
+                if s[end - 1] != "\\":
                     found = True
                 else:
-                    end = s.find("\"", end+1)
+                    end = s.find("\"", end + 1)
             except Exception:
                 found = True
-        return s[idx:end].decode("string-escape"), end+1
+        return s[idx:end].decode("string-escape"), end + 1
 
     def __enter__(self):
         """
@@ -325,3 +352,24 @@ def json_loads(data):
         obj = json.loads(data, cls=json.JSONDecoder)
 
     return obj
+
+
+class CaseInsensitiveDict(dict):
+    """
+    A dictionary subclass that will allow case-insenstive key lookups.
+    """
+    def __init__(self, d=None):
+        if d is None:
+            d = []
+        if isinstance(d, dict):
+            for key, value in d.items():
+                self[key] = value
+        else:
+            for key, value in d:
+                self[key] = value
+
+    def __setitem__(self, key, value):
+        super(CaseInsensitiveDict, self).__setitem__(key.lower(), value)
+
+    def __getitem__(self, key):
+        return super(CaseInsensitiveDict, self).__getitem__(key.lower())
diff --git a/src/leap/mail/walk.py b/src/leap/mail/walk.py
index f747377..1c74366 100644
--- a/src/leap/mail/walk.py
+++ b/src/leap/mail/walk.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 # walk.py
-# Copyright (C) 2013 LEAP
+# Copyright (C) 2013-2015 LEAP
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -26,45 +26,60 @@ from leap.mail.utils import first
 DEBUG = os.environ.get("BITMASK_MAIL_DEBUG")
 
 if DEBUG:
-    get_hash = lambda s: sha256.SHA256(s).hexdigest()[:10]
+    def get_hash(s):
+        return sha256.SHA256(s).hexdigest()[:10]
 else:
-    get_hash = lambda s: sha256.SHA256(s).hexdigest()
+    def get_hash(s):
+        return sha256.SHA256(s).hexdigest()
 
 
 """
 Get interesting message parts
 """
-get_parts = lambda msg: [
-    {'multi': part.is_multipart(),
-     'ctype': part.get_content_type(),
-     'size': len(part.as_string()),
-     'parts': len(part.get_payload())
-        if isinstance(part.get_payload(), list)
-        else 1,
-     'headers': part.items(),
-     'phash': get_hash(part.get_payload())
-        if not part.is_multipart() else None}
-    for part in msg.walk()]
+
+
+def get_parts(msg):
+    return [
+        {
+            'multi': part.is_multipart(),
+            'ctype': part.get_content_type(),
+            'size': len(part.as_string()),
+            'parts':
+                len(part.get_payload())
+                if isinstance(part.get_payload(), list)
+                else 1,
+            'headers': part.items(),
+            'phash':
+                get_hash(part.get_payload())
+                if not part.is_multipart()
+                else None
+        } for part in msg.walk()]
 
 """
 Utility lambda functions for getting the parts vector and the
 payloads from the original message.
 """
 
-get_parts_vector = lambda parts: (x.get('parts', 1) for x in parts)
-get_payloads = lambda msg: ((x.get_payload(),
-                             dict(((str.lower(k), v) for k, v in (x.items()))))
-                            for x in msg.walk())
 
-get_body_phash_simple = lambda payloads: first(
-    [get_hash(payload) for payload, headers in payloads
-     if payloads])
+def get_parts_vector(parts):
+    return (x.get('parts', 1) for x in parts)
+
 
-get_body_phash_multi = lambda payloads: (first(
-    [get_hash(payload) for payload, headers in payloads
-     if payloads
-     and "text/plain" in headers.get('content-type', '')])
-    or get_body_phash_simple(payloads))
+def get_payloads(msg):
+    return ((x.get_payload(),
+            dict(((str.lower(k), v) for k, v in (x.items()))))
+            for x in msg.walk())
+
+
+def get_body_phash(msg):
+    """
+    Find the body payload-hash for this message.
+    """
+    for part in msg.walk():
+        # XXX what other ctypes should be considered body?
+        if part.get_content_type() in ("text/plain", "text/html"):
+            # XXX avoid hashing again
+            return get_hash(part.get_payload())
 
 """
 On getting the raw docs, we get also some of the headers to be able to
@@ -72,18 +87,51 @@ index the content. Here we remove any mutable part, as the the filename
 in the content disposition.
 """
 
-get_raw_docs = lambda msg, parts: (
-    {"type": "cnt",  # type content they'll be
-     "raw": payload if not DEBUG else payload[:100],
-     "phash": get_hash(payload),
-     "content-disposition": first(headers.get(
-         'content-disposition', '').split(';')),
-     "content-type": headers.get(
-         'content-type', ''),
-     "content-transfer-encoding": headers.get(
-         'content-transfer-type', '')}
-    for payload, headers in get_payloads(msg)
-    if not isinstance(payload, list))
+
+def get_raw_docs(msg, parts):
+    return (
+        {
+            "type": "cnt",  # type content they'll be
+            "raw": payload if not DEBUG else payload[:100],
+            "phash": get_hash(payload),
+            "content-disposition": first(headers.get(
+                'content-disposition', '').split(';')),
+            "content-type": headers.get(
+                'content-type', ''),
+            "content-transfer-encoding": headers.get(
+                'content-transfer-encoding', '')
+        } for payload, headers in get_payloads(msg)
+        if not isinstance(payload, list))
+
+
+"""
+Groucho Marx: Now pay particular attention to this first clause, because it's
+              most important. There's the party of the first part shall be
+              known in this contract as the party of the first part. How do you
+              like that, that's pretty neat eh?
+
+Chico Marx: No, that's no good.
+Groucho Marx: What's the matter with it?
+
+Chico Marx: I don't know, let's hear it again.
+Groucho Marx: So the party of the first part shall be known in this contract as
+              the party of the first part.
+
+Chico Marx: Well it sounds a little better this time.
+Groucho Marx: Well, it grows on you. Would you like to hear it once more?
+
+Chico Marx: Just the first part.
+Groucho Marx: All right. It says the first part of the party of the first part
+              shall be known in this contract as the first part of the party of
+              the first part, shall be known in this contract - look, why
+              should we quarrel about a thing like this, we'll take it right
+              out, eh?
+
+Chico Marx: Yes, it's too long anyhow. Now what have we got left?
+Groucho Marx: Well I've got about a foot and a half. Now what's the matter?
+
+Chico Marx: I don't like the second party either.
+"""
 
 
 def walk_msg_tree(parts, body_phash=None):
@@ -93,7 +141,7 @@ def walk_msg_tree(parts, body_phash=None):
     documents that will be stored in Soledad.
 
     It walks down the subparts in the parsed message tree, and collapses
-    the leaf docuents into a wrapper document until no multipart submessages
+    the leaf documents into a wrapper document until no multipart submessages
     are left. To achieve this, it iteratively calculates a wrapper vector of
     all documents in the sequence that have more than one part and have unitary
     documents to their right. To collapse a multipart, take as many
@@ -125,8 +173,12 @@ def walk_msg_tree(parts, body_phash=None):
         print
 
     # wrappers vector
-    getwv = lambda pv: [True if pv[i] != 1 and pv[i + 1] == 1 else False
-                        for i in range(len(pv) - 1)]
+    def getwv(pv):
+        return [
+            True if pv[i] != 1 and pv[i + 1] == 1
+            else False
+            for i in range(len(pv) - 1)
+        ]
     wv = getwv(pv)
 
     # do until no wrapper document is left
@@ -142,7 +194,7 @@ def walk_msg_tree(parts, body_phash=None):
             HEADERS: dict(parts[wind][HEADERS])
         }
 
-        # remove subparts and substitue wrapper
+        # remove subparts and substitute wrapper
         map(lambda i: parts.remove(i), slic)
         parts[wind] = cwra
 
@@ -157,12 +209,12 @@ def walk_msg_tree(parts, body_phash=None):
             last_part = max(main_pmap.keys())
             main_pmap[last_part][PART_MAP] = {}
             for partind in range(len(pv) - 1):
-                print partind+1, len(parts)
+                print partind + 1, len(parts)
                 main_pmap[last_part][PART_MAP][partind] = parts[partind + 1]
 
     outer = parts[0]
     outer.pop(HEADERS)
-    if not PART_MAP in outer:
+    if PART_MAP not in outer:
         # we have a multipart with 1 part only, so kind of fix it
         # although it would be prettier if I take this special case at
         # the beginning of the walk.
@@ -177,36 +229,3 @@ def walk_msg_tree(parts, body_phash=None):
         pdoc = outer
     pdoc[BODY] = body_phash
     return pdoc
-
-"""
-Groucho Marx: Now pay particular attention to this first clause, because it's
-              most important. There's the party of the first part shall be
-              known in this contract as the party of the first part. How do you
-              like that, that's pretty neat eh?
-
-Chico Marx: No, that's no good.
-Groucho Marx: What's the matter with it?
-
-Chico Marx: I don't know, let's hear it again.
-Groucho Marx: So the party of the first part shall be known in this contract as
-              the party of the first part.
-
-Chico Marx: Well it sounds a little better this time.
-Groucho Marx: Well, it grows on you. Would you like to hear it once more?
-
-Chico Marx: Just the first part.
-Groucho Marx: All right. It says the first part of the party of the first part
-              shall be known in this contract as the first part of the party of
-              the first part, shall be known in this contract - look, why
-              should we quarrel about a thing like this, we'll take it right
-              out, eh?
-
-Chico Marx: Yes, it's too long anyhow. Now what have we got left?
-Groucho Marx: Well I've got about a foot and a half. Now what's the matter?
-
-Chico Marx: I don't like the second party either.
-"""
-
-"""
-I feel you deserved it after reading the above and try to debug your problem ;)
-"""