I have a user mailbox on my Exchange 2010 server that many people share access to. Is there a cmdlet that will allow me to add/remove shared permission to the inbox for that user's mailbox? Ordinarily I would just reset the password and sign in as that user and change the sharing permissions through Outlook. In this case however, the box is tied to a service account and the password cannot be reset without causing all kinds of mayhem. Is there a way to do it at the server?