If you want to add a shared mailbox on your Mac, you can do the following:

If you want to open a shared mailbox with Thunderbird, our instructions for Exchange online mailboxes will help you. 1....

If you want to convert a user mailbox into a shared mailbox, you can proceed as follows. Switch to the...

Open Outlook in your browser with this link: https://outlook.office.com/mail/inbox Click on your profile in the top right-hand corner and select...

After your administrator has added you as a member of a shared mailbox, close and restart Outlook. The shared mailbox...