IT@Sam - Technology Tutorials Home ... Departments Division of Information Technology Technology Tutorials Outlook 2016 Menu In Outlook, select the File tab Click the Add Account button. For the E-mail address, type the address of the shared mailbox to access. (Note: The email address must be typed in accurately so verify the email address.) Leave the other areas blank Click Next If this popup displays, click Allow Click Finish The additional mailbox should be listed below the Inbox.