Found a little gem... For those of us using Windows, it looks like a quasi-Bayesian mail filtering proxy has arrived in the form of POPFile. Looks good, haven't had a chance to train it yet, but it works with Eudora, and with my multiple accounts. With some hacking of Eudora's ini file, I even got it so that I can check my Yahoo email by proxying through POPFile, which then proxies through YahooPOPS, which checks my Yahoo web mail. How sick is that???