I don't know how reliable of a proof is a received mailing is. I guess it's proof of something... I think a much more reliable proof is a vouch from another me

I don't know how reliable of a proof is a received mailing is. I guess it's proof of something... I think a much more reliable proof is a vouch from another member who signs up to be your "sponsor" -- responsible for all your actions. If you're interested in seeing a working prototype, check my profile. Some of the things I described have to be done manually for now, however, until the UI is finished.