Once you can get to the Preferences, here’s what you’ll see: When you start it up, the program will step you through the configuration steps, but you don’t have to finish these steps, just go step-by-step until the Preferences option on the Mail menu isn’t greyed out. In the old days, there was a separate Control Panel for changing all these settings, but now you need to know the trick…įor changing your default email program, it turns out you need to launch the Mail.app program just once to get to its Preferences panel. While there’s a lot about Mac OS X that I think is wonderfully crafted, changing the default email program (or Web browser, for that matter) is pretty baffling.