Fret no longer. Mac OS X lets you pick your favorite email program to launch automatically. You can leave Mail open (just this one time) to make the switch, too.
- Launch Mail.
- You can find Mail in the /Applications folder.
- Select Mail | Preferences from the menu.
- Go to the General tab.
- Select the desired email program from the Default email reader: (or Default E-mail Reader) drop-down menu.
- Close Mail.
(Updated September 2012)