As of July 20th, 2016 MIAD will be completely migrated over to Gmail. You can login to the new MIAD Gmail site located at mail.miad.edu. All of your email, contacts, calendars and tasks will be waiting for you. For a few weeks you will still be able to login into Zimbra and view your data (think of it as a temporary reference archive).
Attached below is a FAQ sheet. It will be continually updated as needed. If you have any questions or concerns please feel free to contact us at firstname.lastname@example.org.