Emails sent from the control panel are sent with an 'unsubscribe' link at the bottom of the email. The user can click to unsubscribe or change account settings from email that is sent from the 'Send Email' or 'Email Scheduler' functions.
1. Under 'Utilities' choose 'Send Email'
2. Fill out the information for the email.
3. The received email will automatically contain the unsubscribe link.