Make a pledge to keep your inbox within some limit. Break the pledge and we'll charge you real money.
Every day, make sure you reduce your number of Read messages. We won't count Unread messages against you so don't worry if more messages come in. (Details on our blog.)
Keep below Beeminder's bright red line to gradually whittle your inbox down. Once you get to Zero, we keep checking on you so you don't spiral back out of control.