WebHooks in ProductDyno
To create a WebHook, set it up in your software or something like Zapier.
When you have completed the setup, you will be given a URL that "activates" the webhook. Place this URL in your Product/Collection Webhook Integration section:
The WebHooks only fire if an action happens in ProductDyno, i.e. someone purchases a product or registers to access a free one.
It is NOT the other way round, eg: add a member to ProductDyno when they sign up to your autoresponder