CleanMail Home is a POP3 spam and antivirus filter for Outlook, Outlook Express and all other POP3 email clients, that uses the SpamAssassin engine to perform Bayesian filtering of incoming messages, and also quarantines...
CleanMail Server (formerly NoSpamToday! for Servers) is an SMTP proxy server based spam filter that sits between the internet and your mail server. It accepts the incoming mail, filters it and passes it on to your mail server...