diff --git a/addons/project/project.py b/addons/project/project.py
index 870923304c1..b56a6a3b3fe 100644
--- a/addons/project/project.py
+++ b/addons/project/project.py
@@ -1101,7 +1101,14 @@ class task(osv.osv):
             'planned_hours': 0.0,
         }
         defaults.update(custom_values)
-        return super(task, self).message_new(cr, uid, msg, custom_values=defaults, context=context)
+        res = super(task, self).message_new(cr, uid, msg, custom_values=defaults, context=context)
+        email_list = tools.email_split(msg.get('to', '') + ',' + msg.get('cc', ''))
+        new_task = self.browse(cr, uid, res, context=context)
+        if new_task.project_id and new_task.project_id.alias_name:  # check left-part is not already an alias
+            email_list = filter(lambda x: x.split('@')[0] != new_task.project_id.alias_name, email_list)
+        partner_ids = filter(lambda x: x, self._find_partner_from_emails(cr, uid, None, email_list, context=context, check_followers=False))
+        self.message_subscribe(cr, uid, [res], partner_ids, context=context)
+        return res
 
     def message_update(self, cr, uid, ids, msg, update_vals=None, context=None):
         """ Override to update the task according to the email. """
diff --git a/addons/project/tests/test_project_flow.py b/addons/project/tests/test_project_flow.py
index 58263f6ea8a..72aabcf189b 100644
--- a/addons/project/tests/test_project_flow.py
+++ b/addons/project/tests/test_project_flow.py
@@ -28,6 +28,7 @@ EMAIL_TPL = """Return-Path: <whatever-2a840@postmaster.twitter.com>
 X-Original-To: {email_to}
 Delivered-To: {email_to}
 To: {email_to}
+cc: {cc}
 Received: by mail1.openerp.com (Postfix, from userid 10002)
     id 5DF9ABFB2A; Fri, 10 Aug 2012 16:16:39 +0200 (CEST)
 Message-ID: {msg_id}
@@ -117,11 +118,17 @@ class TestProjectFlow(TestProjectBase):
         """ Testing task creation and management """
         cr, uid, user_projectuser_id, user_projectmanager_id, project_pigs_id = self.cr, self.uid, self.user_projectuser_id, self.user_projectmanager_id, self.project_pigs_id
 
-        def format_and_process(template, email_to='project+pigs@mydomain.com, other@gmail.com', subject='Frogs',
+        # create new partner
+        self.partner_id = self.registry('res.partner').create(cr, uid, {
+            'name': 'Pigs',
+            'email': 'otherid@gmail.com',
+        }, {'mail_create_nolog': True})
+
+        def format_and_process(template, email_to='project+pigs@mydomain.com, other@gmail.com', cc='otherid@gmail.com', subject='Frogs',
                                email_from='Patrick Ratatouille <patrick.ratatouille@agrolait.com>',
                                msg_id='<1198923581.41972151344608186760.JavaMail@agrolait.com>'):
             self.assertEqual(self.project_task.search(cr, uid, [('name', '=', subject)]), [])
-            mail = template.format(email_to=email_to, subject=subject, email_from=email_from, msg_id=msg_id)
+            mail = template.format(email_to=email_to, cc=cc, subject=subject, email_from=email_from, msg_id=msg_id)
             self.mail_thread.message_process(cr, uid, None, mail)
             return self.project_task.search(cr, uid, [('name', '=', subject)])
 
@@ -131,6 +138,10 @@ class TestProjectFlow(TestProjectBase):
         # Test: one task created by mailgateway administrator
         self.assertEqual(len(frogs), 1, 'project: message_process: a new project.task should have been created')
         task = self.project_task.browse(cr, user_projectuser_id, frogs[0])
+        
+        # Test: check partner in message followers
+        self.assertTrue((self.partner_id in [follower.id for follower in task.message_follower_ids]),"Partner in message cc is not added as a task followers.")
+        
         res = self.project_task.get_metadata(cr, uid, [task.id])[0].get('create_uid') or [None]
         self.assertEqual(res[0], uid,
                          'project: message_process: task should have been created by uid as alias_user_id is False on the alias')