I spent a few years creating a proof-of-unique-human system, “Online Pseudonym Parities”, and it is up and running (source code). I need some way for people to communicate and decide what video channel to use (initially people will use something like the old https://appear.in, current platforms for that are https://gotalk.to/, http://p2p.chat/, https://meet.jit.si/, etc. ) People have to agree on a channel ID that others cannot guess, preventing it from being sybil attacked. Ethmail seems like a pretty good way for people to find each other and talk about that. Just discovered it yesterday, tried it now. A lot of people are on smart phones, any way to log into ethmail with an ethereum account on iOS/Android currently?
Update: OK standard email apps can be used like Gmail app and it is all described here, https://ethmail.cc/howto.html. Thanks.
Follow up question: Is it possible to generate access tokens (for Gmail app) using a library? Could I do that myself, without using https://auth.cryptoverse.cc/keys?
Update: seems access tokens need “challenge” from key server.