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output Address result
International Address Verification API With Developer-Friendly Integrations
Set up reliable global address validation in minutes.
With our APIs you can:
- Upload List (POST Request)
- Retrieve List (Get Request)
- List Lists (Get Request)
- Get Lookup Info (Get Request)
- Get Autocomplete Previews (Get Request)
- Autocomplete an Address (Post Request)
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A smarter way to collect, cleanse, and maintain global address data.
Cross-reference global address inputs against official databases to flag invalid entries.
Meet the address requirements of local postal authorities to comply with unique international formats.
Clean up incomplete, duplicate, or bad records in bulk to keep databases accurate and up-to-date.
How to Integrate PostGrid's International Address Verification API
Connect the API to existing systems and get teams up and running quickly.
01
Sign Up
Create a free PostGrid account. No credit card required.
02
Get API Key
Find the Test and Live keys in the Developer section of the dashboard. Use test keys during development; switch to live keys for production.
03
Authenticate
Include your x-api-key in the HTTP header of every request.
04
Integrate
Select either a RESTful API integration for personalized workflows or use a pre-built JavaScript snippet for web-based autocompletion.
05
Verify
Make a POST request to the /verification endpoint, either with a freeform string or a structured JSON body containing address details.
06
Enhance
Use query parameters like includeDetails=true for deep metadata or geocode=true to append latitude and longitude information.
07
Batch
Validate large datasets simultaneously with the /verifications/batch endpoint to maximize throughput.
08
Analyze
Check API responses' status, such as Verified, Corrected, or Failed, to check the accuracy and deliverability of your data.
International Address Verification API Features
Built to manage high-volume address data without impacting deliveries, operations, or compliance.
- Authoritative Data Access: Cross-verify global addresses against the USPS, Canada Post, Royal Mail, and Australia Post’s official databases for maximum data accuracy.
- Address Parsing: Convert poorly formatted global addresses to country-specific formats with PostGrid’s free-form address parsing capabilities.
- Advanced Address Autocomplete: Fast-track the checkout experience by offering up to 100 verified global address suggestions as users enter information.
- Bulk Verification: Upload CSV or XLS files to validate and standardize up to 1 million addresses in a single batch to save time and effort.
- Reverse Geocoding: Convert latitude and longitude coordinates into pre-formatted postal addresses to gather accurate location mapping data.
- Address Transliteration: Handle international characters to preserve the structure of local addresses regardless of script.
- Self-Hosted & On-Premise Deployment: Use existing servers or dedicated hardware to host the address verification solution for complete data privacy and high-capacity request limits.
- Census Data Enrichment: Append geographic, demographic, and political jurisdiction data directly to validated address records for superior spatial accuracy.
- Intelligent Duplicate Detection: Automatically identify and remove duplicate address records within massive datasets to improve CRM hygiene.
- Native Platform Embeds: Integrate global address verification and standardization capabilities into enterprise architecture, including Salesforce, Stripe, Microsoft Dynamics 365, etc.
- Comprehensive Developer SDKs: Access pre-built software development kits for major programming environments to reduce the engineering hours required for deployment.
- CASS and SERP Certified Solution: PostGrid’s API is certified by USPS’s Coding Accuracy Support System (CASS) and Canada’s Software Evaluation and Recognition Program (SERP), ensuring maximum address data accuracy.
Measurable Strategic Advantages
Turn raw international addresses into validated data to keep deliveries on track and stay compliant.
Capture validated addresses at the point of entry with address autocomplete to lower international returned shipments and churn.
Save overhead costs wasted on global postage, packaging, and manual labor by validating addresses in advance.
Support international expansion plans with support for 245+ countries and territories, script transliteration, and local formatting.
Build an accurate address database to avoid failed deliveries, compliance fines, and unhappy customers.
Provide a low-friction checkout experience to customers by suggesting pre-validated, deliverable addresses.
Stop relying on error-prone manual data entry and use bulk/batch processing to save team hours of work.
The PostGrid Difference
A trustworthy partner to speed up operations and keep data clean.
- 99% Global Accuracy Rate
Guarantee precision by cross-referencing addresses against multiple official postal databases and credible sources. - Enterprise-Ready Solution
Verify up to one million addresses at once and use native integrations for enterprise-level scalability. - Flexible Pricing Plans
PostGrid offers flexible plan tiers for businesses to fit their unique needs without locked-in contracts or hidden charges.
Enterprise-Grade Compliance and Data Security
HIPAA
PIPEDA
GDPR
SOC 2 TYPE 2
PCI-DSS
Data Encryption
Audit Logs
Role-Based Access Control
Secure Hosting on AWS
Single Sign-On
Third-Party Penetration Testing
Continuous Monitoring
Testimonials
With a 5-star rating on G2, PostGrid’s International Address Verification API is highly
appreciated by global businesses.
”The tool works well for both verifying new addresses and cleaning up old ones. It helps ensure our data is accurate and consistent, which is crucial for sending out reliable mail.
Zinnia CManager of Events”The system makes sure that every shipping address we get is valid. It checks everything from zip codes to apartment numbers, so we can confidently ship out our orders without worrying about failed deliveries.
Callum WDirector of Ops”The ability to handle both bulk and individual address checks is a big plus. It’s quick and effective whether we’re verifying a large list of addresses or just a single one.
Violetta KVP of Implementation
Address Verification API Integrations You Can Leverage
Embed our address verification functionalities into your favorite platforms via native or custom integrations
Salesforce
Verify and standardize addresses directly within your Salesforce CRM. Prevent failed deliveries and data decay by validating contact, account, and lead records in real-time or through automated batch processing.
Shopify
Ensure accurate deliveries and faster checkouts directly within your Shopify store. Reduce failed delivery costs and boost customer satisfaction by validating shipping addresses in real-time or in bulk.
Integrates with Your Favorite Tech Stack & Tools
Easily Improve your workflow and automate print & mail through seamless integration capabilities.
Frequently Asked Questions
What is the Difference Between Address Validation and Address Verification?
Address validation checks that an address is correctly formatted and complete according to a country's postal standards. Address verification takes it a step further, matching the formatted address against authoritative postal databases to confirm the address actually exists and is deliverable. PostGrid performs both steps simultaneously in a single API call.
How Does the Address Verification Solution Handle Complex Regional Layouts?
PostGrid’s International Address Verification API cross-references against multiple authoritative databases, such as the USPS, Canada Post, Royal Mail, Australia Post, and more, to adapt to highly specific regional structures. It ensures all output addresses are according to the officially accepted formats.
Can Businesses Install the API Locally?
Yes, PostGrid provides a self-hosted solution. There’s some coding on the user's part. Businesses can save the results to a database for future reference. Please contact the support team to get help with the installation process.
Which Languages are Supported by PostGrid?
PostGrid provides transliteration capabilities for addresses written in:
- Latin (e.g., English, Spanish, French, German, Portuguese)
- Cyrillic (e.g., Russian, Bulgarian, Serbian)
- Greek
- Arabic
- Hebrew
- Hangul (Korean)
- Han Characters (Simplified and Traditional Chinese)
- Katakana & Hiragana (Japanese)
- Devanagari (e.g., Hindi, Marathi, Nepali)
- Thai
- Tamil
- Georgian
- Bengali
- Armenian
Is It Possible to Verify International Addresses in Bulk With PostGrid?
Yes, PostGrid’s API can verify, standardize, and parse addresses in bulk and batch across 245+ countries and territories. Businesses only have to upload CSV or XLS files to start the process for up to one million addresses in a single batch.
Does PostGrid Provide Developer Support to Its Clients After API Integration?
Yes, PostGrid provides 24/7 support to its clients for troubleshooting and resolving queries. In fact, enterprise customers get a dedicated account manager for help.
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