Is there a way to implement a mailto: link that works with webmail clients?
Edit – so a traditional mailto link is (as I suspected) not going to work. So has anyone seen anything similar to those rss buttons you see with a variety of the most popular sites on?
The links are handled by the user’s browser. GMail has a client-side install (GMail Notifier) that lets you specify that you want GMail to handle all mailto links.
But there’s no way for a web page to specify that it’s mailto link should be handled by a webmail app (even if it could, how would you know which one?).