- Automatically mark emails needing a reply: A poster on macOSXHints describes how to set up a rule
that will automatically mark incoming emails requesting a reply. Easily adaptable to other uses. - Catch image spam: A new brand of image-based spam can outfox Mail.app’s junk filter. Luckily, an easy-to-construct rule will stop it in its tracks again.
- Remotely schedule torrent downloads: Matt Comi shows you how to construct a rule that will automatically strip out a torrent that you email to yourself and pass it to Azureus to begin the download. Bittorrenting from work without guilt or fear!
- Control your home Mac remotely: Attached to a mail.app rule, this applescript can automate a select number of tasks when prompted by emails with the right keywords. A couple of apps make this even easier to set up.
- AppleScripted Auto-replies: Michelle Steiner has written an applescript that will generate auto-replies when attached to a Mail.app rule. Macresponder does the same thing with more options but costs money.
Matt Comi at Big Bucket Amusement 
A poster on macOSXHints 
