Overview
ShipEngine is a developer-focused shipping API platform that powers label generation, rate comparison, tracking, and address validation across 200+ carriers worldwide. Part of the Auctane family (alongside ShipStation and Stamps.com), ShipEngine has processed over a billion shipments and serves as the backbone for many shipping platforms and 3PL providers.
Unlike consumer-facing shipping software, ShipEngine is designed for developers and technical teams who need to embed shipping functionality into their own applications, marketplaces, or fulfillment systems.
Key Features
200+ Carrier Integrations
ShipEngine connects to more carriers than virtually any other shipping API — from major carriers like USPS, UPS, FedEx, and DHL to regional and international carriers across dozens of countries.
Embeddable UI Components (Elements)
ShipEngine Elements are pre-built web components that developers can embed directly into their applications for rate shopping, label creation, and tracking — reducing development time significantly.
Comprehensive REST API
The API provides endpoints for label generation, rate comparison, address validation, package tracking, customs documentation, and returns management — all through a single integration.
Address Validation
Built-in address validation checks addresses against postal databases in multiple countries, reducing failed deliveries and surcharges.
Who Is ShipEngine Best For?
- Developers building custom shipping solutions
- 3PL providers needing multi-carrier API access
- Platforms and marketplaces embedding shipping functionality
- Enterprise businesses with complex shipping requirements
The Bottom Line
ShipEngine is the gold standard for shipping APIs, offering unmatched carrier coverage and developer tools. Its free tier (500 labels/month) makes it accessible for testing and small-scale projects, while enterprise plans scale to handle massive volumes. However, it's strictly a developer tool — businesses looking for a ready-to-use dashboard should consider ShipStation or Shippo instead.