How to Add a Shared Mailbox in Outlook (Classic)
Use the steps below to add a shared mailbox for a user with Send As permissions.
Adding the mailbox correctly ensures that emails are sent from the shared mailbox instead of the user’s personal mailbox.
- Open Outlook Classic and select File.
- Click on Add Account.

- Enter the Shared Mailbox Address and click Connect

- A log-in window will open up as shown below

- When asked for a username and password, remove the email address that is pre-filled in the username text box.
- Enter your SHSU username and password.

- Select Sign In.
- Click Done.

You will need to restart Outlook to see the account listed.