Been using PopTray along with K9. SPAM is deleted automatically from the server when mail is checked. K9 results for my desktop is 98.92% of SPAM is caught and deleted, it's 99.42% for my notebook. K9 finds the SPAM when mail on the server is checked with PopTray, a rule in PopTray has it deleted from the server. I only have a few rules in PopTray, and a few for Outlook Express, my mail is clean as can be.