When composing messages in Mail.app, as I now have an HD screen on my MBP, the default Helvetica 12pt appears quite small.
I would like to be able to enlarge the text size, but only locally, without changing the font in the message, as I don't want the recipients to have jumbo-size text on their screen.
Is there a way to perform this kind of "zoom" without using the "Universal access" zoom features which are a little bit too much.