I made a Button with the control type: Submit and url with "mailto:" The Submit As has PDF as I wanted the form to be submitted as well.
Basically, this does not work all the time but I can get it to work after I click on a "mailto:" link not on the form (like a webpage or something).
I am using Adobe Reader 9.1.0 but the same thing happens on 8 as well.
Any ideas?