USPS API

Made Easy with EasyPost

Connect with USPS in minutes

Using EasyPost's simple Shipping API, you can start shipping with USPS and dozens of others. Solve complex shipping logistics problems with a single integration. By leveraging EasyPost's technology, businesses can streamline, automate, and gain end-to-end control of their shipping process with our suite of flexible RESTful API solutions. Join our thousands of customers shipping millions of packages each month.

Best-in-class shipping solution

EasyPost offers a modern, flexible RESTful API that connects to 100+ carriers with one seamless integration — helping you to avoid month-long integrations, lengthy carrier documentation, and time consuming updates. Let's build the shipping infrastructure of the internet together. Developers get started for free with EasyPost.

Start coding now

Build the shipping infrastructure of the internet

Take a look at our public documentation and start building with one of our helper libraries (Python, PHP, Ruby, Node.js, Java, and more). Avoid month-long integrations and start shipping in minutes with EasyPost.

Get Started For Free

Tracking Packages

Track packages across all major carriers.

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Address Verification

Validate domestic and international addresses.

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International & Customs

Learn how to handle international shipping seamlessly.

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Shipping Insurance

Shipping insurance for all items sent with EasyPost.

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EasyPost: Built for developers

USPS Commercial Pricing on ALL accounts
Instant Access to USPS, UPS, FedEx, and DHL & more
Try EasyPost for FREE, No Upfront Costs
Client Libraries for .Net, Java, Ruby, Python, Node, PHP, and Go
Millions of packages shipped each month using EasyPost!

import easypost
import os

client = easypost.EasyPostClient(os.getenv("EASYPOST_API_KEY"))

shipment = client.shipment.create(
    to_address={"id": "adr_..."},
    from_address={"id": "adr_..."},
    parcel={
        "predefined_package": "Parcel",
        "weight": 32.8,
    },
)

client.shipment.buy(
    shipment.id,
    rate=shipment.lowest_rate(),
)

Leading companies rely on EasyPost

QALO

QALO uses EasyPost's API to automate their returns for an unbeatable customer experience.

Read their story

EP&V

With EasyPost's API, Expedited Passports & Visas cut their operational load in half.

Read their story

Casper

Casper sped up their European launch thanks to EasyPost's support of over 30+ European carriers.

Read their story

EasyPost in the News

Let's compare the EasyPost API with the USPS API

Feature	USPS	EasyPost API
Tracking API with Webhooks
RESTful JSON
SOAP / XML
Address Verification
Fast and Free Technical Support
Public Documentation and Tutorials
Instant API Access
.NET Library
Go Library
Java Library
Node.js Module
PHP Library
Python Module
Ruby Gem

Connect to EasyPost today

Sign up and start shipping in the same day. We have our USPS API live and ready for you to test with. We also have extensive client documentation in over six different languages to help you get started. If you have any questions, or if you want to talk logistics, feel free to reach out to one of our shipping experts.