Students lose access to their GT Office 365 Exchange mailbox after having been away from Georgia Tech for more than one full semester. Your GT Account will remain intact, but you will lost access to services such as Office 365 Exchange (mailbox), Office 365 ProPlus (installable Microsoft Office), Office 365 OneDrive for Business (cloud storage), Prism (on-premises GT disk space), LAWN (wireless), etc. after leaving Georgia Tech. Your GT Account can be used to access some services, including Passport, to maintain the account's password and (if eligible for Email Forwarding for Life) personal alias delivery options (which must be updated to a valid external, non-GT email address).
For more information on Email Forwarding for Life please click here.