The Switch works by pressing a button on a page. The Switch emails the link, so pressing the button confirms everything is okay! An automatic keep alive would keep pinging if you're dead. I agree it's a narrow market. I've put my 2IC in place and I'm meeting with my lawyer soon to add her. This is about having external relationships for sure and I very much appreciate that comment. The cost to me is a small Linode (nanode) and it hooks into SMTP2go which I already pay for ;)