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One API. Every major carrier. Smarter shipping.

Connect national and regional carriers to the systems you already run. Onboard new carriers and manage them all through one integration, without replacing your existing tech stack.

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A multicarrier shipping strategy keeps your business agile, efficient and protected.
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Stay resilient, no matter what

Flexibility to quickly shift volume to other carriers when delays or strikes hit.
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Smarter comparisons, better decisions

Compare real-time multicarrier rates to avoid pricing surprises.
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Optimized delivery for every shipment

Access discounted options for every shipment — by size, weight, location, and delivery window.
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More stability in an unpredictable market

Stay focused on your business while our API keeps rates and services up to date.

Select your plan and get started in minutes.

Free
$0/month
What's included:
  • Up to 3,000 free labels per month
  • Discounts up to 88%*** off USPS shipping labels
  • Create labels and rate shop
  • Pay on use returns
  • Track your shipments
  • Domestic address validation
  • Sandbox environment
  • Admin dashboard
  • Email support
Overage fees
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Enterprise
Custom pricing
What's available:
  • Bring your own carrier accounts
  • Volume discounts
  • Unlimited API calls​
  • International address verification
  • Cross-border shipping APIs
  • Order management APIs​
  • Business automation rules​
  • Tracking webhooks
  • Certified with ERR​
  • Analytics
  • Dedicated support, implementation and account managers​
  • 24/7 support
Talk to an expert

iOverage Fees: >3K Label Printing: $.05 per; >3K Tracking Only: $.02 per; >3K Address Validation Only: $.01 per; >3K Rate Only: $.02 per

See it in action, integrate in minutes.


Wondering if this is right for your business? Register for our free developer sandbox and start testing multicarrier shipping, rate shopping, label creation, and tracking. No long forms. No sales call. No credit card required.

Ready to ship smarter? 

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Developers and businesses choose Pitney Bowes Shipping APIs

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Lower shipping costs
Access discounted rates from FedEx®, UPS®, DHL®, and USPS®.
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Improve operational flexibility
Automate smart carrier selection based on price, speed, zone, and service reliability.
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Simplify and streamline your tech stack
Unify APIs for shipping, manifesting, tracking, address validation, and returns.
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Track and manage every shipment
Tracking shipping from origin to delivery, in real-time.
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Test, build, and optimize faster
Immediately access a sandbox with API keys and OAuth token generation.
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Full-featured shipping
Create daily shipping manifests to expedite carrier processing. Manage refunds and cancellations.

For the devs who like to ship, technically speaking

Whether you're integrating complex shipping logic or just exploring what's possible, our developer docs for multicarrier and USPS APIs have you covered.
Multicarrier Shipping APIs USPS Shipping APIs
Why choose Pitney Bowes Shipping APIs
99.9% uptime
99.9% uptime
One of the most reliable shipping APIs on the market.
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Fast, modern integration
RESTful web architecture makes integration simple and fast. Many clients integrate in a day.
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True partnership
105+ years of logistics expertise, backed by real people and 24/7 tech support.
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Proven at scale
Trusted by brands like Maersk, Etsy, TikTok and Microsoft.

FAQs

What is a multicarrier shipping API?

A multicarrier shipping API is one integration that connects your system to several carriers. The Pitney Bowes unified API covers:

  • Real-time rate shopping across carriers
  • Label creation
  • Shipment tracking and daily manifests
  • Address validation
  • Returns
  • Your team builds and maintains one integration instead of one for each carrier.

Can the shipping API work with the systems we already run?

Yes. You keep your existing ERP, WMS, and ecommerce platform. Pitney Bowes shipping APIs connect marketplaces, ERP, and WMS systems for single-parcel, multi-parcel and high-volume workflows. If a system can't call an API directly, Shipping 360 also offers:

  • Cloud Connector for modern cloud applications
  • Data Agent for legacy or on-premise systems

Which carriers does the shipping API support?

The API connects to FedEx, UPS, DHL, USPS, and regional carriers.  All carriers sit behind the same integration, so you can move volume to another carrier when delays or strikes hit.

Can I test the API before I commit?

Yes. Register for the free developer sandbox and get API keys and OAuth tokens right away. There are no long forms, no sales call, and no credit card. The API uses RESTful architecture, with developer docs for the Multicarrier Shipping APIs and USPS Shipping APIs.

Simplify shipping. Protect your bottom line.

Enhance efficiency, boost profitability and ensure stability—all through seamless integration.
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Learn more
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Interested in cross-border shipping?
Access all the data and tools you need to support international shipping in one place. Clean APIs. Global coverage. Minimal maintenance.
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APIs that fit your stack
Use our shipping APIs standalone or as an add-on to Enterprise Office and Fulfillment subscriptions.
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Top six reasons to integrate
With a USPS® Approved PC Postage® Provider, you’ll unlock faster shipping, more features and higher revenue.

***Discount off USPS® Priority Mail Shipping Labels. Savings based on Priority Mail Cubic pricing for up to .1 cubic ft package weighing 20lb sent to Zone 9. vs Priority Mail Retail. Rates are limited to shipping from the U.S only.