An Outbound Webhook is how GoHighLevel pushes data out to external systems. When a contact reaches a certain point in a workflow, GoHighLevel fires an HTTP POST to a URL you specify. The payload contains contact details and any other data you include. The external system receives it and does whatever it is programmed to do.
Common uses include sending new lead data to a Google Sheet, notifying a Slack channel when a deal closes, creating a record in a custom database, triggering a Make or Zapier scenario, or updating a client's own CRM or billing system.
You control the payload. GoHighLevel lets you build a custom JSON body using merge tags, so you can include exactly the fields the receiving system needs and name them whatever that system expects.
How Outbound Webhook works
In the workflow builder, you add an "Outbound Webhook" action. You enter the destination URL, choose the HTTP method (usually POST), and build the request body. GoHighLevel replaces any merge tags in the body with live contact data when the action runs.
Most outbound webhooks send JSON. You can also add custom headers, which is useful if the receiving system requires an API key or auth token. GoHighLevel does not validate the response by default, but you can add error handling in a subsequent workflow step if needed.