D2L Notifications can be turned on to alert you to course updates. These notifications are setup on a subscription basis. This article shows the process of turning the notifications off.
Disable all mobile notifications and remove phone numberEnter the Notification settings by clicking on your profile (name) in the top right and choose “Notifications.”
Disable Select Notification TypesSelect the “Instant Notifications” that you wish to receive via email, SMS text message, or both.
Turn off "Activity Summary" Emails
You can request that D2L email you an activity summary for each of your courses at a specific time each day. To disable this feature, select "Never" from the "How often" drop down.