ExMerge lets you grab multiple mailboxes to PSTs. This is a great backup, especially of old dead mailboxes you want to delete from your system. I got an “EXCHMEM.dll not found” error, fixed by copying the file from /Exchsvr/bin to the ExMerge folder. Some more useful stuff here. And you will most likely have to do this temporary work around to access data for backup. [Update: make sure you use a non-administrator account to do the ExMerging]