We just launched integration with Integromat platform, which helps to build automated workflows. We also provide several templates for quick start, and one of them demonstrates how to send event attendance certificates as professionally looking PDF files.
You can try the integration by this link https://www.integromat.com/en/integration/2303-send-pdf-certificate-to-event-attendeesPaul Snyder commented
Ditto Drew's comment. We're new to WA, and I'd just asked tech support if they knew of anyone doing something like this before I found this post. For our purposes the form could be a PDF compiled from the Event data and look the same for all recipients. Attendee names included etc. (also from the WA database) would be a bonus. thanks!