I posted at the beginning of the month that Safari 6 in Mountain Lion lost the Mail Link to Page feature. Well, technically it did. In reality, it’s actually moved.
When using the Share button and selecting Email this Page, Mail opens with the page ready to email. Looking at the New Message window closely, there’s a new drop-down menu labelled Send Web Content As: and includes the option to send only a link to the page. There’s also a new option to PDF the page and send that instead.
(In addition, you can customise the Safari toolbar and add the Mail button which does the same thing).