Frequently Asked Question
In Outlook, click on:
File (top right)
Account Settings
Account settings (drop down when you click on Account Settings)
Click on New:
Enter the Shared Mailbox email address in the box and click Connect:
Click Sign in with another account:
Important: You MUST authenticate as yourself, not the shared mailbox.
Once you have authenticated click Done:
Exit out of all open Outlook windows, and reopen Outlook.
Set the Shared Mailbox as the Default Email to Send As
In Outlook, click on File
Click Options (bottom of the left hand menu):
Select Mail in the left hand menu and scroll to Send messages:
Check the box for Always use the default account when composing new messages and click Ok.
Click on File
Click Account Settings and Account Settings (from the dropdown)
Select the Shared Mailbox from the list and click Set as Default
Click Close.