The IGS Anti-Spam System can simply tag messages that it determines are spam, based on the sensitivity level that you define.

A "Tagged" message has the subject line altered to be prefixed with **SPAM(n.nn)** where n.nn represents the spam score that was determined by the anti-spam algorithms. Additional information is added to the header which details how the spam score was determined.

Tagging alone can greatly speed the task of determining what is junk and what is legitimate e-mail without automatically deleting anything. This leaves you in complete control.