Something people have asked me to do before. I didn’t know how to do it, but I’ve found it here:
http://yahoorezinr.com/
The form has an action mailto:email@ddress.com?subject=blah blah
And the form submission data is the body text of the email. In FireFox anyway. IE seems to add a postdata attachment instead. But I guess if one of the fields was called “body”, then it would be the message text.
It’s kindof ok. But ugly in both. Anyone know how to do this nicely?