Add a Shared Mailbox

In order to access a shared mailbox in Outlook, you have first to add this shared mailbox on your account. To do that:

1. Click the File tab and go to Account Settings > Account Settings.
2. Select the email account that has access in the Shared mailbox and click Click Change.
3. Click More Settings.
4. At Advanced tab, click Add.
5. Enter the shared mailbox's Name or the email address and click OK.
6. Click Apply and OK and then Next and Finish to close the account properties.
7. The shared mailbox will now automatically display in your Folder pane in Outlook.
8. To send or to reply to an email using the sharing mailbox, make sure that the 'From' field in the email message, displays the Name (Email Address) of the Shared Mailbox. If you don't see the From field at the top of your message, choose Options > From.

In order to access a shared mailbox in Outlook for WEB, you have first to add this shared mailbox on your account. To do that:

1. Sign in to your Office 365 account and open the Outlook on the web.
2. Right-click on the name of your primary mailbox (or in Folders) and select Add shared folder.
3. Type the name or the email address of the shared mailbox and click Add.
4. The shared mailbox will now automatically display in your Folder pane in Outlook, under your main mailbox.
5. To send your first message using the shared mailbox, click the New Message button and from the 3 dots menu choose Show From.
6. Make sure that the 'From' field displays the name of the shared mailbox and then type the recipient's address and your message. When done, press the Sent button to send your first email using the Shared Mailbox account.