To deactivate your account go to www.MessageMe.Harvard.edu. Click on "Register/Update” and log in. The cell phone(s) you registered will be listed. Scroll to the bottom of the page and Click on "Opt-Out" to remove the number (s) from the system. This will deactivate your account. If you are having problems deactivating your account, please contact MessageMe@Harvard.edu with your request.