The sanitizer is a filter that rewrites MIME messages so as to 'defang' well known email-based exploits and trojan horses (or viruses). It can also scan attachments with third-party virus scanners. Running a virus scanner is like getting a flu-shot. A good idea, but why expose yourself to the virus at all? The Anomy sanitizer lets you avoid all the stuff you don't really need, but might hurt you. This is what makes Anomy different from virus scanners and tools to apply them to your incoming email. It's a big difference, and nobody said you couldn't do both......(free).....