Canvas Notifications
In Canvas, sometimes teachers and students make comments about a submission for a specific assignment. You might never know about the comment unless you get notified about the comment. Similarly teachers might never know about a student comment unless they get notified. Everyone, including teachers, should turn ON notifications in Canvas so that none of us have the situation of "I didn't know you made that comment in Canvas."
So how do you get notified via email of the comments or conversation in Canvas? At the very least, please do the following while in Canvas. You can choose to turn on other kinds of notifications if you wish.

