In Mountain Lion, Safari has a new method of "Email this Page" which opens up a new mail message where the web content can be shown as a page, pdf, or a link.
If one chooses "Link", the font type and size for the link text is the default the user has chosen for messages in the Mail.app preferences. However, any text that the user can add to the the message now defaults to Helvetica 12 pt.
Is there a way to change the default for text size, either in a preference or through the terminal?
Here's an example of what I'm talking about, where the link text is Helvetica 16 and any additional text added defaults to Helvetica 12.
Best Answer
There are several ways to do that.
The easiest way would be to install a Plugin which formats outgoing E-Mail and give you the option to change specific characteristics to you liking (Font, Size etc.). For that you should look into the following Plugins:
MessageFont
Universal Mailer
Another way would be to change the default Font Size via the Terminal, f.e. in 24, open up the Terminal and type in:
That will change the Font to 24pt, but that includes the Page you want to forward from Safari if you choose 'Webpage'. If you just forward the Link everything should be fine.