Say you needed to move Exchange mail from one location to another but you were unsure about the integrity of the mail, Export Mailbox could remedy the situation. Even more than that say you had a bunch of Exchange Mailboxes that you were not really certain as to whether or not a particular email had infected them. You can actually run software that can scan all the Exchange mailboxes or a particular file by title or anything else. I will note that Microsoft Exchange is pretty hefty on security these days.
In order to us the software you’re going to have to be an Exchange Server Administrator, a Local Admin on the server you’re moving the folder to and have access to the original and destination mailbox locations. None the less, such software capabilities make Microsoft Exchange a pure pleasure to work with. I think it’s also because of such products that Microsoft Exchange is so preferred these days.