diff --git a/addons/mail/doc/changelog.rst b/addons/mail/doc/changelog.rst
index a7a2cfcf2b5..852c548aa0f 100644
--- a/addons/mail/doc/changelog.rst
+++ b/addons/mail/doc/changelog.rst
@@ -6,6 +6,20 @@ Changelog
 `trunk (saas-2)`
 ----------------
 
+ - ``mass_mailing_campaign`` update
+
+  - ``mail_mail``: added ``opened``, ``replied`` and ``bounced`` datetime fields
+    holding the first time the mail has been respectively opened, replied or has
+    bounced.
+  - controllers: added a web controller to track opened mail
+  - ``mail_mail`: moved ``reply_to`` computation from ``mail_mail`` to ``mail_message``
+    where it belongs, as the field is located onto the ``mail_message`` model.
+  - ``mail_compose_message``: template rendering is now done in batch. Each template
+    is rendered for all res_ids, instead of all templates one id at a time.
+  - ``mail_thread``: added support for bounce alias. Using an alias on Return-Path
+    the mail gateway now flags emails and models having a ``message_bounce`` field
+    as bounced.
+
  - added support of ``active_domain`` form context, coming from the list view.
    When checking the header hook, the mass mailing will be done on all records
    matching the ``active_domain``.