Spam-Trap uses Bayesian filtering together with a Spam-Trap-unique filtering method to be able to filter out 99 percent of your spam. Spam-Trap filters all incoming e-mail and marks spam e-mail in the subject-header. This way you may filter all spam e-mail directly into the trash of your e-mail program. Spam-Trap does not bounce or delete spam because when you bounce a spam, you are sending a spam yourself. All modern spam-filters make mistakes, even with 99 percent accuracy, it could bounce that one important e-mail.