Check out CRM114 Discriminator (http://crm114.sourceforge.net/ http://crm114.sourceforge.net/ ), it's an amazing machine learning package tuned to filtering ema

Check out CRM114 Discriminator (http://crm114.sourceforge.net/ http://crm114.sourceforge.net/ ), it's an amazing machine learning package tuned to filtering email. It can do good filtering right out of the box (with a little config and training).