Comodo AntiSpam is an intuitive, easy-to-use, client-based software product that eliminates spam from your computer’s email system. It uses ‘Passcode Authentication’ technology a active-filtering algorithm, to authenticate the sender of each incoming email message. Comodo AntiSpam works with all current Windows operating systems and supports email programs such as Outlook, Outlook Express, Eudora, Netscape or any other POP3 email application. Comodo AntiSpam guarantee to eliminate all spam from your computer. Windows XP / Windows 2000