To edit your Canvas Notification Preferences, click the Account link at the left of the page, then click Notifications:
Whenever something happens in one of your classes, Canvas generates a "notification" and you can decide how and when to receive those notifications. Types of notifications include: you receive a grade for an assignment, a due date is changed, a teacher posts an announcements, there's a discussion post, etc. You can receive these notifications by email, text message, Twitter, etc. And you can decide how often (if at all) to receive these notifications.
Click in the grid, choose one of these options for each type:
If you choose "Do not send me anything," Canvas will not notify you. However, whenever you log in to Canvas, you will still have access to those notifications on your Home Page.
Register Web Services
If you authorize Canvas to log in to other web accounts for you, you can connect your Canvas account to other accounts like Twitter, Google Docs, and Skype. This assumes you already have an account on one of those services. If you do, here's how to link it to Canvas:
Once you have linked your account to Canvas, you will notice a new entry in the Ways to Contact list on the right hand side, under the Other Contacts section, plus a new column on the Notification Preferences screen.