Royal Mail Click & Drop API
How to Get a Royal Mail Click & Drop API Label
A step-by-step guide to creating your first label via the Royal Mail Click & Drop API, including OBA setup, auth, and manifest pitfalls.
Sophie Martin
Integration engineer turned product manager. Built carrier adapters for parcel and freight across EU. Loves test harnesses and logs.
ProShip vs ShippyPro
ProShip vs ShippyPro for Enterprise Parcel APIs
ProShip vs ShippyPro compared on API access, deployment model, rate limits, and EU carrier depth — with a scoped verdict for enterprise shippers.
carrier API production access
Carrier API Production Access Times Compared
We compared production API access timelines for 10 carriers and platforms, from instant self-serve keys to multi-day manual approval, as of Sept 2026.
EU PID API
Adding EU PID Fields to UPS, FedEx and DHL APIs
How to add M-PID, NS-PID and S-PID fields to UPS, FedEx and DHL shipment APIs before the EU's Nov 1, 2026 PID deadline.
Manhattan Active vs Blue Yonder API
Manhattan Active vs Blue Yonder for TMS API Access
We test Manhattan Active and Blue Yonder on public API docs, sandbox access, and integration tooling so architects can scope TMS build effort early.
carrier API token lifetime
OAuth Token Lifetimes Across 7 Carrier APIs
We measured OAuth access-token lifetimes for FedEx, UPS, DHL, and USPS carrier APIs — from 28 minutes to 8 hours — with sources and dates.
InPost API integration
InPost API Setup: From Sandbox Token to First Label
Step-by-step InPost API integration: get an OAuth 2.1 sandbox token, query locker locations, create a shipment, and generate your first label.
MercuryGate vs Descartes API
MercuryGate vs Descartes: Carrier API Access Compared
We test how MercuryGate and Descartes expose carrier connectivity to integrators — docs, auth, protocols — and say which fits direct API builds.
carrier API SDK
SDK Coverage Measured Across 12 Carrier APIs
We audited official SDK languages, maintenance activity, and open issues across 12 carrier APIs as of Sept 2026, with sources for every figure.
DPD return label API
DPD Return Labels via API: A Step-by-Step Guide
How to generate DPD return labels via API using the -RETURN parcel_type field, bearer-token auth, and rate limits — with a working failure case.
EasyPost vs Shippo
EasyPost vs Shippo for EU Cross-Border Labels
EasyPost vs Shippo tested for EU cross-border shipping: carrier coverage, customs docs, sandbox behavior, and 2026 pricing, with a scoped verdict.
carrier webhook retry policy
Webhook Retry Windows Across 7 Carrier APIs
We audited published webhook retry policies for FedEx, DHL, EasyPost, Shippo, ShipEngine, and Sendcloud, with intervals, attempt counts, and sources.