What Is a Shipping Webhook?

A shipping webhook is a developer tool used to build event-driven logistics architecture. It is an automated HTTP callback that pushes real-time data from a carrier or shipping platform directly to a merchant's application the moment an event occurs.

Polling vs. Webhooks

To understand webhooks, you must understand the alternative: API Polling.

Polling: The merchant's software asks the carrier every hour: "Has the package been delivered yet?" The carrier usually responds: "No." This is incredibly inefficient and places massive load on both servers.

Webhooks: The merchant's software tells the carrier: "Here is a URL on my server. Send a POST request to this URL the exact second the package is delivered."

Instead of constantly asking for updates, the merchant's system sits idle until the carrier actively pushes the event data.

Common Shipping Webhook Events

A robust shipping platform like RC:Ship will fire webhooks for events such as:

• shipment.created: Fired when a label is generated.
• shipment.picked_up: Fired when the carrier takes physical possession of the package.
• shipment.in_transit: Fired when the package arrives at a sorting facility.
• shipment.out_for_delivery: Fired when the package is placed on the final delivery vehicle.
• shipment.delivered: Fired when the package reaches the customer.
• shipment.exception: Fired when an issue occurs, such as a weather delay or incorrect address.

Why Webhooks Matter for Ecommerce

Webhooks are the technical foundation of a modern post-purchase experience.

When an out_for_delivery webhook is received, the merchant's CRM can instantly trigger an SMS notification to the customer. When an exception webhook is received, it can trigger an automated Zendesk ticket for the customer support team to proactively contact the customer.

Building these experiences is drastically simpler using a unified platform like RC:Ship, which ingests the wildly differing webhooks from dozens of carriers and normalizes them into one clean, predictable JSON payload for the developer.