Spam accounted for 77% of all e-mail traffic in 2004

97% of unsolicited e-mail sent in 2004 violated the Can-Spam law, according to MX Logic. Spam made up 77% of e-mail traffic as a whole over 2004. Another researcher, Postini estimates that legitimate e-mail plummeted to 12% from 22% of e-mail traffic in 2004.