The good thing with this approach is that it can spot trouble that match-based programs will never see coming. The bad thing is that it takes longer to do so. Besides its different methodology, the program's relative slowness comes from the fact that it does a thorough job. Instead of simply testing message headers, or the body, Inspector can decode encrypted messages and read all attachments. If busting spam is what you want, put Inspector on the case.
Inspector is also a content reviewer.
Message Inspector impresses us elsewhere. Anything that cuts down Usenet's enormous bandwidth requirements is a real winner. All in all, for message content control, Message Inspector has definitely earned its badge. Instead, you must use a third-party antiviral program to blast the bugs. But in the workplace, it works well.