I’m assuming a sane country where the right to privacy [0] holds.
reply[0] e.g.: https://en.wikisource.org/wiki/American_Convention_on_Human_...
Government physical mail is pretty great, you just need the right regulations.
replyGovernment physical mail has the benefit that substantial tampering is way harder to do at scale.
replyIt's the same vein as criminals using cash vs Bitcoin; both can hide crime, but one is way easier to scale up.
The infra is what’s expensive, and that doesn’t need to be able to read the contents of your email.
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