Thanks for the link. I think they encrypt all communication in such a way, that not even they have access to the content. If they are being forced to provide the email, they will provide it in it's encrypted form.
It's scary to think that most of us, just accept the status quo.... "They snoop, we just have to accept it"
I always imagine a scenario where a person from some government organization is allowed to sit with you and your family in your living room, whilst you watch TV to make sure you abide by the rules.
They invade you privacy in the electronic world, and we just do not care.