All Email Notifications
Click the EnrollMe tab on the left sidebar.
Click the Settings sub-tab at the top of the page.
Click the Email Settings button.
Check or un-check the checkbox labeled Enable EnrollMe Email Notifications for all Enrollment Status Changes accordingly.
Individual Email Notifications
A. Select an email template from the View/Edit the default email message for this enrollment status drop-down menu.
B. Check or un-check the checkbox labeled Disable this status notification next to the drop-down menu.