Snow Leopard 10.6 comes with built in Server Side rules (Sieve) that helps you to organize mail, if your like me and am supremely disappointed at the lack of functionality then you will be happy to know that there are alternatives out there. Snow Leopard still ships with a copy of Squirrel mail for OSX it also ships with many cool plugins for squirrel mail already installed. Lets look at the alternative to the built in Sieve scripts that ship with 10.6 Snow Leopard server.

To start with you must enable Sieve on your server to do this, start Server Admin, Mail > Settings > Advanced: Tick “PLAIN” on IMAP/POP and save it. Mail > Settings > Filters: Tick “Enable Server Side mail rules”, save it and restart the mail service. once your done here you will be able to use the built in web based interface for handling server side rules. However you can also install your own!

SquirrelMail is the default webmailer in SLS. You can use the plugin avelsieve to manage server side mail rules. Download avelsieve (I recommend version 1.9.9) and unpack in directory /usr/share/squirrelmail/plugins (so that directory avelsieve is within the plugins dir).  Read more..