If the US weren't pathologically schizophrenic about actually providing service to citizens, the post office would

(a) still be a government agency, not a wholly-owned subsidiary,

(b) already provide email via government servers and clients in kiosks at the post office (and the personnel to staff the service and handle high-touch troubleshooting) instead of relying on private corporations and organizations to be the sole providers of what has become a necessary service, and

(c) provide basic banking services, knee-capping the payday lending and check-cashing industries.

... but it isn't that kind of country right now.