Annoying that it cannot be configured to automatically Scan the Inbox folder first. Also missing is the ability to read the content for unwanted subject matter. If it had these features it would receive a 9/10 score from me.

SpamBully touts their 'bounce' feature very highly. Even though their staff do not use that feature (probably because they know it would get them kicked off their ISP), they continue to sell an anti spam product which makes the spam problem worse for everyone. The 'bounce' feature forwards spam to the address in the 'from' header of the spam. Since the 'from' header is forged in almost every single spam, and frequently it is a valid address, anyone using the 'bounce' feature is, in fact, a spammer themselves. SpamBully should be removed from the market until the 'bounce' feature is removed, or it should be marketed as a method of sending spam, because that's what it is.

SpamBully is by far the best anti spam filter I have used to date. Has a special system that learns from your email habits after a few days so it can quickly learn what I consider spam and not spam. Has other cool features like being able to bounce spam back, block by words, and change the interface into other languages. They also have very quick customer service.