With a limit of ten emails a month and paid plans I'm not sure you can call this "a free tool".
Hi corin_, I got the same feedback from someone else - I've updated the free tier to 50 contacts / month [http://contactformify.com/plans]. I was trying to figure out what a typical startup or personal site gets per month. I guess I underestimated.
For example I would never generalise Amazon AWS as "free hosting".