I'm thinking about building a small web interface. The first step is basically to have a players adress book, with a form to issue challenges using the hacky server provided by zizaniste. With the targeted platform, i could send challenge emails from the player email (so he will receive turns to his/her address), but only if it's a gmail account, and linked to the app (a 2 click process).
Roughly 25% of users registered here https://docs.google.com/s...m5zSkFVb0Z2eVBxcEE#gid=0 have given a gmail. And i'm not in these, although the email i've given is redirected to a gmail at the end.
So, who has NOT a gmail account / would not link it to the web interface ?
(to know if i have to provide another login method - which still could not be used to send challenges, only to register as a player and receive them)