I built a service that makes sure your forms are always working — no more lost leads due to something breaking. Currently bringing in over 1k/mo: https://formtester365.com It fills out the form as a human would (daily or on whatever weekly schedule you want) and then confirms it was received. It currently supports Gravity Forms on Wordpress due to their API for confirming submissions, but a new version that supports all web forms is nearly ready. One of the main use cases is for agencies that want to make sure clients sites are always working.