In the Mac (mountain lion) mail.app (v 6.2), when composing a new message, I'm looking to hide the default font/styling bar that appears beneath the standard toolbar at the top of the window.
I've checked the view menu and found nothing and have also tried to customized the toolbar to no avail.
Best Answer
First go to View > Show Toolbar. Then, click this button:
That's all there is to it!