Learn how to keep your account active and what happens if your account is inactive for over 90 days. An AOL Mail account may be deactivated if it is inactive for 90 days. To keep your AOL Mail account active, please sign in to your account at least once every 90 days. When a mailbox is deactivated after 90 days without a log in, new mail may not be delivered to your mailbox. Incoming emails are bounced back to the sender. If another 90 days pass without any activity on the account (180 days total) your mailbox may be deleted.