In a previous article I showed how to get and install an SMIME certificate. Now let’s look at installing it into Mail. It’s really, really hard. First, open Mail. Then, click on the Mail menu and select Preferences. Then click on Accounts. Then click on the account you got an SMIME cert for. Then, in the TLS box, select the certificate you want to use. Next, go to compose a new message. You will see the little disclosure triangle to the left of the From dialog. Click on it and then check the box for the lock and the icon to the right of that, meant to look like a…