You may want to extend the functionality of WP Webhooks and WP Webhooks Pro by yourself and this article shows you how easy it is to do that.
To make the start as easy as possible, we provide you with a demo plugin extension which includes one custom trigger, as well as one custom action. The plugin is built in a way to make extending the logic even more easy.
Checkout our repository for that: https://github.com/ironikusagency/wp-webhook-pro-extension
The above extension is made for WP Webhooks and WP Webhooks Pro
If you feel that there is something missing, you can always send us a quick message, we love to help!