Configuring Webhooks:
You can configure Webhooks in your Netcore Email API account. Here are the basic steps:
1. Login to your account using https://cpaas.netcorecloud.com
2. Navigate to Settings
3. Click the Webhooks tab
4. Enter a valid Callback URL where Netcore Email API platform can POST the event data. As per your business requirement, you can configure Webhooks for all or selected categories of events using individual events section.

For more information on configuring webhooks, you can refer to below links
https://emaildocs.netcorecloud.com/docs/webhooks-email-api
https://emaildocs.netcorecloud.com/reference/webhook-structure
https://emaildocs.netcorecloud.com/reference/repository-events-1