Not to revive an old dead thread, but now that I'm doing sites again, I couldn't figure out why when testing a form, I couldn't get it to work. After hours of trying different things, researching, I ended up here. I tried the suggestion of the txt file and POSTing to that, but couldn't get it to work for the life of me. Thankfully, the PHP solution worked right out of the box, so to speak. Big thanks. I've more sites to update now, but at least I know they'll work.
Thanks guys and gals.