I am an instructor in Canvas, but recently took a course in Canvas. That is when I realized that Canvas generates a new email for each annotation that is made on an assignment. This would be fine except when you consider the volume of annotations that are made on 6 or 7 page writing assignments, I know that sometimes I make over 20 annotations and getting an email for each one of these would be frustrating to say the least. I would suggest modifying the emails associated with annotation comments to decrease the notifications. I think students become jaded to the notifications because of the volume of notifications and then they miss important information (think of the boy who cried wolf). I have looked at my notifications settings and I was not able to find how to turn annotation notifications off.