Show which users have not received messages in bulk messaging

Go to user/messageselect.php Select some users Send a message to they in a way that some fail (read instructions footer*). See that with patch applied you got a message telling how many fails ocurred and a list of the users for which the message was not sent instructions footer*: The easiest way to check this is working is to edit user/messageselect.php, line #159 and change: if (!message_post_message($USER, $user, $messagebody, $format)) { by if (message_post_message($USER, $user, $messagebody, $format)) { That way all the correctly sent messages (would be great if you can verify they are really sent ok) will be detected as failures so you should get the message about the failure with the list of failed messages (all, because you hacked the code to fail all). I've added a screenshot of the expected message.