Ever wanted to be able to file away email with just a keystroke? MailActOn is a plug-in for Apple Mail that adds the ability to assign actions to keystrokes. The actions can be as simple as moving a message to a folder, or as complex as running an AppleScript. You can also have rules automatically applied to messages after some other action — such as when you send an email. If you get a lot of email and find it tedious to click and drag messages around the Mail interface, then you should check out MailActOn.