Yeah man if I were in charge of the post office I'd definitely push for that AND the return of postal banking. Every post office in the United States would be your one stop service for this email so if there are authentication issues or anything you can actually go there and talk to a PERSON, IN-PERSON.

You would use this system specifically for official government correspondence, and also it'd be better for job seeking too - any situation where you need to be communicating as YOURSELF, fully verified.

I'd even throw in social media features. Forums, microblogging, live chat groups... however, everyone's identity is clear and certain. No anonymity here. There is privacy insofar as what's between you and the government stays between you and the government, but if you want anonymity and to express opinions without someone knowing who you are, that's to be done elsewhere.

Instead of a social media website that lies to you and pretends dishonestly to give you privacy, this would have to be up front about the fact that it's public property. A town square where you're wearing a name tag. If you don't want your neighbors knowing your rhetorical positions, post them elsewhere. Those other places, private services, and important and need to exist as counterbalance.

I'm sure many criminals would be stupid enough to use it for human trafficking and contraband smuggling shit though so that'll help uncover and discipline rogue elements.