I gather this status is a result of the data sync mobility pack being installed, but I'm puzzled as to what triggers this status? I've had a few people mention internal mails that they have sent, show this status, where they would expect to see Read, or opened?
Can somebody give me a clue what triggers that status, and does it override when something is opened, read, or deleted? As these are the only status flags that mean anything to the sender really.

Thanks, Alan