How does the Address Validation API work?

Simply run the customers declared address details through our Global Address Validation endpoint for structured error detection, delivery verification and formatting suggestions.

Generate your API key to access 220+ global locations
Submit any delivery address (domestic or international)
Receive standardized, verified shipping adddress outputs
Combine with global tracking and optional insurance
Automate inside checkout or label creation workflows

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Verified delivery addresses for every shipment

Sort, correct, and standardize addresses automatically in real time. Every API response includes our universal carrier address formatting logic, error indicators and classification so you can ship anywhere with confidence.

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Embeded address validation at checkout

Improve conversion rates and reduce support tickets by validating customer addresses as they checkout. Display accurate quotes, verify zip and postal codes, suggest corrections or block incomplete or non-deliverable orders.

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What is a Shipping Address Validation API?

Easyship's Address Validation API verifies and corrects shipping address inputs by comparing order data against universal postal databases and global formatting standards. It correctly formats the address components, identifies missing or incorrect elements, and ensures the final address is deliverable and compliant for label creation.

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Global Network: One API endpoint for 550+ global carrier services
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Built For Developers & Enterprise Brands

Whether you're building a checkout flow, syncing eCommerce CRM data, or validating addresses at scale, Easyship’s Address Validation API delivers clean, accurate and carrier-ready addresses worldwide.

eCommerce Brands

Instantly save on shipping and fulfillment costs with one unified shipping solution for every sales channel worldwide.

For Stores

Global Marketplaces

Offer a completely integrated global shipping experience for buyers and sellers with transparent rates, duties, insurance and discounts.

For Marketplaces

Technology Platforms

Connect and embed global shipping services directly into your application for seamless shipping, returns and payment flows.

For Platforms

Fulfillment & Warehousing

Automate shipping workflows, rate shopping, manifests, pickup scheduling, and analytics while reducing complexity and overheads.

For Logistics

Get started with Easyship's Address Verification API

Power every shipping workflow—from startups to global enterprises—with a developer-first API built for performance, reliability, and scale. Clean JSON, predictable calls, and full flexibility mean you integrate once and ship anywhere.

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Shipping Address Validation API FAQs

What does the Address Validation API return?

The verified response includes standardized address formats by country, error indicators, address classification (commercial or residential) and clear suggestsions for incomplete or incorrect entries.

Does the Address Validation API verify USPS addresses?

Yes, Easyship offers extensive United States address validation services, ensuring strict compliance and compatibility with USPS postal shipments for confirmed address deliverability and shipping zone accuracy.

Can the shipping API validate international addresses?

Absolutely, select from Easyship's advanced US Domestic of International address validation endpoints to verify the address formatting across more than 220+ supported countries and territories. That's high accuracy address validation coverage no matter where you're shipping in the world.

Can the address validation correct typos and incomplete addresses?

Yes, when integrated into your checkout or label generation process, customer errors like typos and incomplete addresses can be identified and corrected with suggested prompts. The API can resolve address errors with missing data, incorrect zip codes, mismatched cities/states and invalid formatting.

How does residential address classification work?

Many carriers have a residential address delivery surcharge meaning that the correct classification of each address it critical to avoid overcharging. Easyship's address validation clearly classifies both residential and commercial addresses to ensure the correct information is shown upfront at checkout and charged to customers at the time of payment, avoiding incorrect quotes and adjustment charges later on which can affect customer satisfaction and retention.

Why is it important to validate addresses before shipping?

Incorrect delivery addresses can lead to multiple failed delivery attempts, delivery delays, return-to-sender shipments and total package loss. This can result in dissatisfied customers and incur additional carrier, replacement and reshipment costs, which may reduce overall profit margins and end up costing your business money. Easyship's integrated shipping address validation tools provide more certainty for brands and decrease the risk of non-delivery. When combined with global tracking and optional insurance (recommended), eCommerce brands are far better protected in the event of loss or damage in transit.

Try the composable shipping API for global eCommerce

Every Easyship API is modular. Allowing you to connect only what you need from rates to returns. Start with live pricing, then layer in label generation, tracking, duties and address validation as you grow.

More Shipping API Resources

Technology

Shopify Australia

Easyship helped Shopify Australia enable it's merchants with access a diverse courier network, discounted rates and an integrated logistics solution leading to 4.5x growth in orders.

Technology

eBay

Find out how eBay leveraged Easyship to improve shipping efficiency, cut costs, and boost global sales, driving $3.68 billion in GMV across 200+ countries

Industry

Ostrichpillow

We helped this famous pillow improve their delivery service by expanding their distribution worldwide and reduce shipping costs by 62%.

Shipping Address Validation API For Successful Worldwide Delivery

Ship with confidence to 220+ countries and territories

Why Brands Verify with Easyship's Address API

How does the Address Validation API work?

Verified delivery addresses for every shipment

Embeded address validation at checkout

What is a Shipping Address Validation API?