You have the option to be notified via e-mail whenever you receive new messages in itslearning or when something new is added to a course.
1. Click your picture in the top right corner and choose Your settings
Now you have 3 options
1. Choose how often you would like to receive e-mails about new itslearning messages
2. Click "Save"
Remember that you can always check your messages in the itslearning app