Webhooks are a feature that allows one application to provide real-time information to other applications. With webhooks, users can receive notifications about email sending activities directly on their server, enabling them to automate workflows and track events such as opens, clicks, and bounces. Setting up webhooks is straightforward, requiring only the creation of an endpoint to receive POST requests and registration with Resend. The feature uses HTTPS and delivers a JSON payload containing metadata like event status, allowing users to take action in real-time.