Xtrawise Anti-Spam Filter for Windows supports all standard POP3 email clients without any configuration including Outlook, Outlook Express, Netscape Mail, Opera, Eudora and Pegasus Mail. Includes Challenge/Response authentication, Trojan and Virus protection. Options allow 100% Spam blocking. Also blocks Windows Messenger Service Spam. Support for AOL, IMAP4, MSN Hotmail and Yahoo!Mail coming soon.