The main problem is that it's a cat and mouse game that really should not be happening in people's email. Saying, "hey, it's no big deal that we're clumsily wa

The main problem is that it's a cat and mouse game that really should not be happening in people's email. Saying, "hey, it's no big deal that we're clumsily wanking with your email contents/security because we'll easily be able to fix any problems that arise" is less comforting than simply not clumsily wanking with your email contents/security in the first place.