GLS API sandbox
Setting Up the GLS API Sandbox: First Label
Step-by-step guide to GLS parcel API sandbox setup: get MyGLS credentials, call CreateLabel, and generate your first test label.
Sophie Martin
Integration engineer turned product manager. Built carrier adapters for parcel and freight across EU. Loves test harnesses and logs.
AfterShip vs ClickPost
AfterShip vs ClickPost: Tracking API for EU Carriers
AfterShip vs ClickPost compared on EU carrier coverage, webhook retry design, and pricing transparency, with a verdict for European integration teams.
carrier API rate limits
Carrier API Rate Limits Across 9 Providers, 2026
Published carrier API rate limits for FedEx, DHL, UPS, ShipEngine, Shippo, Easyship and EasyPost, sourced from vendor docs as of August 2026.
carrier webhook signature verification
How to Verify Carrier API Webhook Signatures
Verify webhook signatures from EasyPost, Shippo, and DHL step by step, with HMAC code, exact header names, and the raw-body bug that breaks it.
EasyPost vs ShipEngine
EasyPost vs ShipEngine for EU Carrier Contracts
EasyPost vs ShipEngine compared on connecting your own GLS, DPD, and DHL contracts: rate limits, sandbox fidelity, webhooks, and pricing.
carrier API uptime
Carrier API Uptime SLAs: 8 Vendors' Real Numbers
Published SLA terms vs. logged incident data for 8 carrier/multi-carrier APIs, sourced from status pages, as of August 2026.
DB Schenker EDIFACT
Sending a DB Schenker Transport Order via EDIFACT
Step-by-step guide to building a DB Schenker IFTMIN EDIFACT transport order, validating segments, and confirming receipt via IFTMCS.
Sendcloud vs nShift API
Sendcloud vs nShift: API DX for EU Carriers
We test Sendcloud vs nShift APIs on auth, docs, sandbox, and rate limits to pick the right EU multi-carrier integration for engineers.
multi-carrier API
Multi-Carrier API Coverage: 11 Vendors Compared
We pulled self-reported carrier counts from 11 multi-carrier APIs and TMS platforms as of July 2026, sourced page by page, with the gaps flagged.
DHL Parcel DE Shipping API migration
Migrating DHL SOAP v3 to Parcel DE API V2
Step-by-step migration from DHL's retired SOAP v3 shipping API to the REST Parcel DE Shipping API V2, with OAuth2 setup and rollback checks.
carrier API pricing
Carrier API Pricing 2026: What 7 Platforms Charge
Verified July 2026 pricing for EasyPost, Shippo, ShipEngine, Sendcloud, Easyship and more — per-label fees, overage costs, and hidden charges compared.
Carrier API Documentation Reality Check: DX Scoring Across 12 Major Providers — Why FedEx Leads While Regional Carriers Lag
Poor documentation across carriers introducing new APIs, adjusting label requirements, refining rules, and tightening documentation specifications at a rapid pace with little notice isn't just an integration nuisance anymore. When FedEx, UPS, and DHL update their APIs every few months while regional carriers struggle with basic endpoint descriptions,