HTML code to automatically send a PM or email?

I'm creating a forum shop and I want, when the person clicks the "Buy" button to automatically send a PM to me saying that made a purchase. Currently I can only do it with email, which seems to require Windows Messengers, so I can't have that. Anyone got a code to automatically send a PM?

If it isn't possible to send a PM, then is it possible to automatically send an email without having to load up another program (Windows Live Messenger)?

Its possible to automatically send a PM using AJAX or even just submitting a faux form.

Judging by your topic on the Support Forum though, it's not possible to deduct points.