I always assumed this was the case. Not that I use it but seems pretty obvious. As long as you do not see your email as exactly the same as your ordinary mail:

I always assumed this was the case. Not that I use it but seems pretty obvious. As long as you do not see your email as exactly the same as your ordinary mail: i.e. "your letters" you will not understand what it means that they are "kept" by someone different from you. Yes, this is a problem (no one has a private mail server out there except a couple of people). But that is reality. "Oh, my letters, aunt Anna keeps them after I read them and the ones I send, she keeps a copy". But Brutus is an honest man, as Mark Anthony says.