For more information, see what else do I need to know? The ITMS has to create the shared mailbox and add you to the group of users before you can use it. You can also use the shared mailbox as a shared team calendar. Why use shared mailboxes? They make it easy for a specific group o f people to monitor and send email from a public email alias, like or When a person in the group replies to a message sent to the shared mailbox, the email appears to be from the shared mailbox, not from the individual user. If you have full access permission to a shared mailbox that appears in the address book, you can use Outlook Web App or a desktop version of Outlook (for example, Outlook 2013), to open that mailbox.
