[netflixandkill]

All of your communications, sure probably not, but for all the ones that are already for government purposes, with government entities, and other basic purposes it's a good place to start.

At least some uniquely identified email address is better than hoping things like court documents with legal implications get paper mailed to some previously known physical address you may or may not still have any access or relationship with.

[dusted]

we actually have something like this, but it's a too-specialized system, so it's not possible to send "mail" to people unless you're a big enough company to register for that privilege, and users can't reply via the system, so it's a receive-only solution that's also incompatible with standard technologies.