Mozilla junk-mail controls kick ass. I said it earlier but I just have to say it again. If you haven't tried this then get the latest Mozilla build and give it a shot. You train the tool by marking mail messages as either "junk" or "not junk". After only minimal training it will start to automatically mark mail as junk for you. When you're satisfied that it's marking mail correctly you can enable moving of junk mail to a junk folder. I've trained with thousands of messages and I'm getting 92-93% of my junk automatically marked and moved to a junk folder and not a single false positive after nearly two months use and thousands of spams killed. It's so nice to open my inbox each morning and watch the total number of messages cut in half (or more) as the filter moves out the spam. This is definitely the biggest convenience feature since pop-up blocking. Mozilla is my online quality of life insurance. Thanks to dmose, sspitzer, bienvenu, jglick and the others that put so much time into this.
