Connecting to Shared mailboxes in Exchange Online

The directions below explain how to set up shared mailboxes for use with Exchange Online. They are written for use with Outlook.

Connecting to Exchange Online Shared Mailboxes in Outlook

  1. Select File from the ribbon in the upper left corner, then + Add Account.
  2. Click the down arrow on Advanced Options then select Let me set up my account manually, type in the name of the shared mailbox, including, then click Connect.
    Type the mailbox name including then click connect.
  3. Click the Office 365 icon.
    Click the Office 365 icon
  4. Click More choices.
  5. Type your full email address. Then provide your UD password and MFA code (if prompted).
  6. Leave the "Use Cached Exchange Mode" box checked. Drag the slider to All, and click Next.
  7. Click Done.
  8. Restart Outlook.

Connecting to an Exchange Online shared mailbox from Outlook Web Access - only for users with Exchange accounts

  1. With Outlook Online open in a web browser, click on your name in the upper right corner of Outlook Online and click Open another mailbox.
    Open another mailbox.


  1. Type in the full name of that shared mailbox, then select it from the list.
    Type in the full name of the shared mailbox.
  2. The shared mailbox will open in a new browser tab.

Opening a shared mailbox in Outlook Online without logging into a personal Exchange account

  1. You can do the same as above directly in any browser by entering a URL in the following format:
  2. When prompted, log in using your account, password, and MFA.