Cloudmark DesktopOne

Cloudmark DesktopOne anti-spam software integrates with your existing software, including Outlook, Outlook Express, Thunderbird, and Windows Mail.

It checks incoming e-mail, determines whether it's spam, and then automatically routes spam to a spam folder. DesktopOne runs in two modes: Basic Mode and Pro Mode. In terms of spam filtering, both modes are protected with the same level of security.