Leland Scott has taken the best bits of several scripts that automate the vacuuming of Mail’s Envelope index and rolled them together into a solution that will automate the cleaning process using Mac Os X’s Launchd service.

The result, VacummMail, is a clever little utility that can be run anytime with two clicks of the mouse for a manual clean up.

It features a series of dialogs that tell you what is about to happen and what has happened, which is always satisfying:

Even better, the process can be automated by placing the app into your /Applications/Utilities folder and the included plist file into your ~/Library/LaunchAgents folder.

By default, this will run the app at 1 pm every Tuesday. If that time doesn’t suit, it can easily be changed using Lingon , an open source launchd configuration file editor:

You can get VacuumMail from Leland’s web site .