Shipping API support, docs & troubleshooting

Everything you need to integrate rates, labels, and tracking for UPS, FedEx, USPS & DHL — plus a direct line to the person who built it.

Documentation Getting started, guides, and the full API reference. FAQs Answers to the most common integration questions. Troubleshooting Diagnose errors with rates, labels, and tracking. API Status Operational Live uptime for every carrier endpoint.

Mark Sanborn, founder of RocketShipIt

Founder-led support

Talk to the person who built it.

No ticket queues, no bots. When you write in, you talk to the person who built the product — me.

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Typical reply · same business day

Mark Sanborn Founder, RocketShipIt