diff --git a/weboob/capabilities/messages.py b/weboob/capabilities/messages.py
new file mode 100644
index 00000000..66247b06
--- /dev/null
+++ b/weboob/capabilities/messages.py
@@ -0,0 +1,83 @@
+# -*- coding: utf-8 -*-
+
+"""
+Copyright(C) 2010  Romain Bignon
+
+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, version 3 of the License.
+
+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, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+"""
+
+import datetime
+import time
+
+class Message:
+    def __init__(self, thread_id, id, title, sender, date=None, reply_id=''):
+        self.thread_id = unicode(thread_id)
+        self.id = unicode(id)
+        self.reply_id = unicode(reply_id)
+        self.title = unicode(title)
+        self.sender = unicode(sender)
+
+        self.new = False
+        self.content = u''
+        if date is None:
+            date = datetime.datetime.utcnow()
+        self.date = date
+
+    def getDateInt(self):
+        return int(time.strftime('%Y%m%d%H%M%S', self.getDate().timetuple()))
+
+    def getFullID(self):
+        return '%s.%s' % (self.id, self.thread_id)
+
+    def getFullReplyID(self):
+        return '%s.%s' % (self.reply_id, self.thread_id)
+
+    def getID(self):
+        return self.id
+
+    def getThreadID(self):
+        return self.thread_id
+
+    def getReplyID(self):
+        return self.reply_id
+
+    def getTitle(self):
+        return self.title
+
+    def getDate(self):
+        return self.date
+
+    def getFrom(self):
+        return self.sender
+
+    def getContent(self):
+        return self.content
+
+    def isNew(self):
+        return self.new
+
+class ICapMessages:
+    def getNewMessages(self, thread=None):
+        """
+        Get new messages from last time this function has been called.
+
+        @param thread [str]  if given, get new messages for a specific thread.
+        @return [list]  a list of Message objects.
+        """
+        raise NotImplementedError()
+
+class ICapMessagesReply:
+    def postReply(self, message):
+        raise NotImplementedError()