I should remind ppl:
Even after a challenge has been made, it is the challengers responsibility to schedule a game. The automated emails cant do the scheduling for you. Between you you'll need to negotiate a time to play. The challenger shouldn't be waiting until after the deadline to ask when their challenge is available to play. This is why the challenge remains open for over a week, to give enough time for the challenger to contact the 'challangee' and determine when they can play. They should be making contact as soon as the challenege is made. After the game, players should not delay entering the result, both players will have the opportunity to place a new challenge shortly after the result is recorded.
This reduces the need to rely on receiving CCL emails.