Webhooks allow apps to send automated messages or information to other apps when new information becomes available, often triggered on specific activity such as new deals or contacts. With Zapier's built-in tool for creating webhooks, users can automate tasks between their favorite apps without needing coding experience. To set up a webhook, users need to verify that their app allows webhooks and create a unique URL, which is then used in the app's settings. Users then create a new Zap in Zapier, selecting the webhook as the trigger, setting up an action such as sending an email, and mapping dynamic values from the webhook to fields in the Zap editor. Once set up, the webhook triggers the Zap, sending an automated email with information from the original app.