SpamBurner is more than a spam filtering tool, it is also a great e-mail reader, which can help protect you from e-mail based viruses as well (as it allows viewing of messages in text form, even if the message has complex HTML and Javascript coding! SpamBurner strips it down, and makes it readable) -- plus, SpamBurner supports Microsoft's Outlook Express message viewer too. It supports POP3, and offline e-mail in Eudora and Microsoft Outlook.