Speed up Mail.app

for you mac users that use Mail.app, i found this (through digg) that will help speed up the application. Here is a brief instruction on what to do (copied from that site):

1. Quit Mail. 2. Open Terminal. 3. Type the following: cd ~/Library/Mail sqlite3 Envelope\ Index An sqlite> prompt will appear. At that prompt, type vacuum subjects;. After a short delay, the prompt will return. Type Control-D to exit. 4. Restart Mail and enjoy the extra speed.

UPDATE: apparently this works too… sqlite3 ~/Library/Mail/Envelope Index vacuum index;