It has been there for a long time. If you use Safari and want to email a page you are viewing to a friend, hit "command" "i" and the page will be in a "Mail" new document. The page is fully HTML like in Safari.

But if you have mail set up for RTF instead of HTML it doesn't work.

In fact, if I just want RTF, after making the new Mail doc with HTML web page, I just change the document to RTF and most of the garbage, except the text, goes away. I have some stuff left to delete but for my friends still on modems appreciate getting a 'lighter' email smile