diff --git a/addons/mail/doc/changelog.rst b/addons/mail/doc/changelog.rst
new file mode 100644
index 00000000000..f6674bb42ad
--- /dev/null
+++ b/addons/mail/doc/changelog.rst
@@ -0,0 +1,11 @@
+.. _changelog:
+
+Changelog
+=========
+
+`trunk (saas-2)`
+----------------
+
+ - added ``_mail_post_access`` attribute that specifies the access right that
+   should have the user in order to post a new message on a given model. Values
+   are ``read`` (portal documents), ``write`` (default value), ``unlink`` or ``create``.
\ No newline at end of file
diff --git a/addons/mail/doc/index.rst.inc b/addons/mail/doc/index.rst.inc
index 4b01d3ec7bd..7f56666336b 100644
--- a/addons/mail/doc/index.rst.inc
+++ b/addons/mail/doc/index.rst.inc
@@ -12,3 +12,12 @@ Mail Module documentation topics
    mail_partner
    mail_state
    mail_subtype
+
+
+Changelog
+'''''''''
+
+.. toctree::
+   :maxdepth: 1
+
+   changelog.rst