How to Manually Add/Access and Use a Shared Mailbox

Question:

If I have been added as a member to a shared mailbox but the account doesn't automatically show up as an option in the list of available mailboxes in Outlook, how can I access the shared mailbox?

Answer:

Official instructions from Microsoft on how to access and send email from a shared mailbox:

https://support.microsoft.com/en-us/office/open-and-use-a-shared-mailbox-in-outlook-d94a8e9e-21f1-4240-808b-de9c9c088afd

Quick instructions on how to access a shared mailbox:

Desktop Client:

1. In Outlook, click the Tools option, then select “Accounts…” from the drop-down menu.
2. In the new window that appears, click the “+” button on the bottom left.
3. Select “New Account…” from the drop-down menu. Enter the email address of your shared mailbox.
4. When prompted for a password, do not enter a password. Instead, select the “Sign in with another account” option instead. 
5. ​​​​​​​When prompted, enter your email address and password and click sign in. ​​​​​​
6. You should see a message stating that the shared mailbox was added and the mailbox should appear under your own in the Accounts page.

Web Client:

►To fully open a shared mailbox:

1. Open Outlook and click on the user icon in the upper right of the screen.
2. Select "Open another mailbox" from the menu.
3. Type in the address of the account you wish to access and select "Open".

►To pin a shared mailbox:

1. Open Outlook and right-click on "Folders"
2. Select "Add shared folder or mailbox"
3. Enter desired shared mailbox address into the pop-up window and select "Add".