This is actually a really good use-case for PGP. Opt-in use to upload the pubkey and, if provided, encrypt automated e-mails like auth links and password reset.

This is actually a really good use-case for PGP. Opt-in use to upload the pubkey and, if provided, encrypt automated e-mails like auth links and password reset. Facebook supported this for years, not sure why they recently deprecated it.