Description:
Shared mailboxes are accessed via your personal work address. Only users that have been granted access to a specific shared mailbox can access the inbox. Once granted permissions, you can:
Instructions:
- Log into primary email account via a web browser.
- Right-click Folders (Or your email address) in the left navigation pane, and then choose Add shared folder or mailbox.

- Type the name or email address of the shared mailbox.

- Click Add

The shared mailbox will now display in your left column. You can expand or collapse the shared mailbox folders as you can with your primary mailbox.
Removing a Shared Folder
- Right-click the shared mailbox,
- Click Remove shared mailbox or folder

- Log into primary email account via a web browser.
- Click your profile icon in the top right
- Click Open another mailbox.

- Type the email address of the other mailbox that you want to open, select the contact when it appears.

- Click Open.
The shared mailbox opens in a new browser tab, allowing access to the other mailbox.
Additional Information or Resources:
For additional features and How To's for Shared Mailboxes, ex: sending emails from, using the shared calendar, and automatic replies, visit here: Open and use a shared mailbox in Outlook
See 'Related Articles' for additional information.