To update your email notification preferences:
1. Head to https://portal.rateitapp.com/ and log into your RateIt Portal with your username and password
2. Head to Settings via the top right-hand corner of the My Insights page
3. Click on My Email Notifications from the left-hand column
4. From here, you can either enable or disable the various email notifications as desired
To learn more about the different types of email notifications, check out this handy guide over here.