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The Carrier You Know. The Platform That Delivers.
USPS is one of the most trusted and widely used carriers in the country. Our WMS connects to it directly through USPS's modern REST API. Access every major mail class, bring your own negotiated rates, and put the full power of ShipHero's fulfillment platform behind every shipment.
The full USPS portfolio, directly connected to your ShipHero workflow
Ground Advantage, Priority Mail, First Class, and international services are all supported out of the box. Whatever your shipment needs, you're covered! No need to switch tools or manage separate accounts.
Already have a USPS Negotiated Service Agreement? ShipHero supports full NSA integration, so you ship at your contract pricing automatically, on every order.
Address validation, customs forms, signature confirmation, manifests, and special services are all available. You get the same advanced functionality large shippers rely on, accessible to any ShipHero customer.
ShipHero's USPS integration is built on the latest REST API, which means faster rate requests than legacy platforms and more accurate label generation. Less waiting, fewer errors at the label stage.
Accessing USPS through ShipHero doesn't cost extra. There are no add-on charges or subscription fees to unlock the integration: it's included as part of your ShipHero platform.
There are no custom builds or third-party connectors to set up. ShipHero's direct integration with USPS gets you up and running fast, so you can start generating labels and fulfilling orders right away.
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ShipHero's USPS integration is built on the carrier's latest REST API with OAuth 2.0 authentication, not a legacy connection or a middleware workaround. That means faster rate requests, more reliable label generation, and a foundation built to keep pace with USPS platform updates. Your team gets a cleaner, more responsive experience from rate shopping through to dispatch.
Ground Advantage, Priority Mail, First Class, and international services are all available within ShipHero. You're not limited to a subset of the portfolio. The full range of USPS services is accessible from a single platform, so you can pick the right service for every order without leaving your workflow.
ShipHero's connection to the USPS REST API delivers rate and label responses significantly faster than integrations built on older USPS platforms. During high-volume periods like Peak Season or flash sales, that speed compounds across thousands of shipments and keeps your packing floor moving.
Address validation, customs forms, signature confirmation, manifests, and special services are all supported. Rather than optional add-ons, these are re part of the integration, available across all ShipHero platform tiers (Core, Cheapest, BulkShip, and Wholesale Earth) so you can fulfill with precision regardless of order complexity.
If you have a Negotiated Service Agreement with USPS, ShipHero supports full NSA integration. Your contract pricing applies automatically across every shipmen. No manual overrides, no rate discrepancies. Brands and 3PLs managing multiple clients can keep each account's pricing separate and accurate.
No. Connecting to USPS through ShipHero is included in your platform. There are no extra subscription charges or per-label fees to access the integration.
Yes. ShipHero supports full NSA integration, so your contract pricing carries over automatically. You ship at your negotiated rates on every order without any manual configuration per shipment.
ShipHero supports all major USPS mail classes, including Ground Advantage, Priority Mail, First Class Package, and international services. Advanced features like customs forms, address validation, signature confirmation, manifests, and special services are also fully supported.
The USPS integration is available across the full range of ShipHero platform tiers: Core, Cheapest, BulkShip, and Wholesale Earth.
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On September 1, 2026, Descartes Systems Group announced its acquisition of Extensiv for approximately $120 million. What was announced, what usually follows deals like this, and the questions Extensiv customers should put to their vendor before renewal.
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