You’re supposedly (I say supposedly because I haven’t tested with an actual g1 yet, i’ve just talked to tmo’s customer service about it) wrong about pop/imap email on the g1; it does not count against the 400-message limit. It is billed as data and is part of the ‘unlimited’ data with either of t-mobile’s plans. I can see how you got confused because the 24.99 plan on their web site calls “email” part of the 400-message limit. It’s very misleading. What they REALLY mean is that people emailing your phone via traditional email-to-sms will be charged as if a text message; REAL email, be it gmail, imap, or pop, is unlimited.