Is it possible to (being domain admin) delete a single email of user xyz on the Microsoft Exchange server?

[jinny]

(without having or changing the password of user xyz)

Or: where in the Exchange manager can i see (/manage) every seperate email?

[Ymirtor]

You can delete, restrict or anything you like, have a copy of their email sent to you as well/or limit the content they recieve. (Sort of like parental controls)

[Damkopa]

Sure. In Outlook, just open thier mailbox. The easiest way is to to add yourself to thier Mailbox rights in Active Directory Users and Computers.