<HTML><HEAD> <TITLE>Sieve: A mail filtering language</TITLE> <!-- $Id: sieve.html,v 1.1 2000/04/25 02:56:46 leg Exp $ --> </HEAD><BODY> <H1> Sieve: A mail filtering language</H1> Sieve is a Internet standards-track protocol for filtering messages on delivery. The Cyrus Sieve implementation supports filing messages into specific folders, forwarding messages, rejecting messages, and the standard vacation function. It can reply to messages based on headers or envelope information. <H2>Cyrus Sieve</H2> <H2>Some simple sample Sieve scripts</H2>