One of the most annoying things about the Moodle messaging system is that when a user receives a message from a user who has blocked them it doesn't show. 

The message windows still pops up and says there is a message waiting but the user in unable to read it.

Many of our students complained about this as the pop-ups become increasingly annoying.

To fix this I changed the code in /message/discussion.php Read more »

Moodle messaging is a fantastic tool but it is often abused by our students here at college.  Students have been reported to spend too much time sending messages in class.  Often the male students spend time looking for female students to whom they can send a message to.

When a student receives an unwanted message they can report it by clicking a link. 

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