Export to PST
Hate to create this as there is already a topic on "importing and exporting PST" files. But this would be to just "Export" to a PST file. From the admin console - pick a mailbox and select "export to PST" locate the file in a folder (or pick an existing file if possible) and it exports. That PST file could then be examined by any outlook or pst file compatible viewer; for archive, bad employee, legal, etc.
Björn Jaborek S-I-B commented
I exported many accounts with Outlook to pst files. But an option for administrators in the backend would be very good.