After some exploring I came across a "good enough feature": correspondence chess. On the website and the mobile apps you can login en logout a game (including t

After some exploring I came across a "good enough feature": correspondence chess. On the website and the mobile apps you can login en logout a game (including the variants) in between turns and set the window from 1-14 days per turn! The only thing is that you don't get notified when a person has taken their turn, except when you are on iOS i read. Well, you can always exchange chess notation through Riot, e-mail or snail-mail :-)