use your thawte certificate seamlessly in mac mail. osx makes it easy. wow love it. yah i won't bother with making another keychain... if someone is sitting at my box, logged in, the game's over anyway.

How to Set Up Encrypted Mail on Mac OS X by François Joseph de Kermadec -- The latest version of Apple's Mail app, included with the Panther upgrade, supports S/MIME security and encryption. But how do you go about getting a certificate and taking advantage of this feature? François Joseph de Kermadec shows you how, step by step.