@Tutanota I know this post is well-intended, but it backfires terribly when privacy/anonymity advocates read it, as it sounds like you're implying that you have to know/verify the user's real name, phone number, social security number, photograph, and so on...

PS: Fun Fact - Tutanota has more followers than Proton on Mastodon :)

PPS: Also, technically you're lying. You need to know the paid user's location i.e. country (even when they're paying with crypto Proxy Store Gift Card).