Right? This is the one I switched to after getting fed up with FormMail. It was self-hosted and runs on PHP instead of CGI, whohoo! Pratically magic for 2001. http://regretless.com/scripts/scripts.php#dodosmail
You either download the CGI script and host it yourself or you pay the formmail.com people to host it. In the olde days there were free ones where you specified the destination in the form, but spam put paid to that.
Edit: http://www.formmail.com/ still seems to be going, in fact.