This article describes how you can change your notification preferences to get notifications less or more often.
In your global navigation menu, go to Account > Notifications.
You'll see a table of notification options, as well as each contact method you have connected to your Canvas account. For each option, you will see four icons representing different notification frequencies:
Checkmark: Receive a notification right away. This might be delayed by up to an hour in case an instructor makes several changes.
Clock: Receive a notification daily.
Calendar: Receive a notification weekly. The time you'll get a notification is shown at the bottom of the page.