systeMacs can help you manage your mail, minimize spam, and create rules that automate
your email experience.

With Mac OS X Tiger Mail 2 you can take control of your email and inbox. Now featuring spotlight searching you can search selected mailboxes or in all mailboxes. You can search contents of messages or just the from, to or subject fields.

Just as you can use smart playlists in iTunes, you can create smart mailboxes to stay up to date and automatically send and receive mail.

You can watch a QuickTime Demo of the Mail application which shows you some basics of this
fully functional application.

Using Mac OS X Mail in Tiger support page is here.