diff --git a/addons/mail/models/mail_message.py b/addons/mail/models/mail_message.py
index 3194eb15033..719baf8cc94 100644
--- a/addons/mail/models/mail_message.py
+++ b/addons/mail/models/mail_message.py
@@ -845,6 +845,9 @@ class Message(models.Model):
             ('channel_ids', 'in', email_channels.ids),
             ('email', '!=', self_sudo.author_id and self_sudo.author_id.email or self_sudo.email_from),
         ])._notify(self, force_send=force_send, send_after_commit=send_after_commit, user_signature=user_signature)
+
+        notif_users.mapped('partner_id')._notify_by_chat(self)
+
         channels_sudo._notify(self)
 
         # Discard cache, because child / parent allow reading and therefore