Bulk Address Validation Tool Web Interface

Step 2: Paste Your Formatted List Below. (Here's An Example File.)

Click this link to fill the data field with a properly formatted address.

Step 3: API Key (Optional)

Read More About Licenses Here.

Step 4

Process My List Of Records

The demo is limited to verifying 10 records at a time.

Please Note: There is a fee charged for each address on any CSV list you wish to verify. However, the first 100 addresses are free, and any addresses beyond that will be charged a pay-per-address fee. You can instantly verify your CSV file by signing up here.

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Our API Documentation is highly user-friendly and straightforward to implement. Also, it is comprehensively supported by all programming languages.


Our address database is USPS (CASS), Canada Post (SERP), Royal Mail (PAF), and Australia Post (AMAS) Certified to ensure accurate address data.

Premise Level Data

With the support of SERP and CASS Certified address data, our Software and API accurately validate and correct addresses till apartment numbers

Developer Support

We have detailed developer guides, support docs, and API docs to ensure your developers have good support.

Easy Integrations

Integrate our address verification app with popular CRMs, automated marketing tools, data tools, and more in minutes.

SLA & Uptime Guaranteed

We offer a 99.9% uptime guarantee and exceptional 24/7/365 customer support.


Set up your test account, get access to detailed API docs or dev support.
Easily switch to live mode with just a click when ready.



Free 100 Lookups

Try for Free


We Include

$0.05 per Verifications (US & CA)

$0.06 per Verifications (International)


We Include

$0.03 per Verifications (US & CA)

$0.06 per Verifications (International)

100k Plus

Best Rates

Talk to Sales

No Surprises

  • Sign up for a free trial and get 100 bulk credits for testing
  • Addresses are both CASS and SERP certified 
  • Detailed API docs or dev support available 
  • Upload and verify upto 200k addresses at a time
  • Dedicated customer support

Our Customers Say It Best

PostGrid's Address Verification API integration with our company's CRM was easy to achieve, and support is excellent and efficient. Once implemented, accessing the address was faster and more straightforward for us to learn and access. It also ensured that the time and resources were not wasted when uploading mailing lists, as per the Local and International Postal Standards.

Enterprise Solutions Architect

After testing PostGrid Address Verification API against our existing address verification vendor, we found that PostGrid provided more detailed and accurate outcomes with fairer up-front pricing. As a result, Our delivery accuracy increased by 40% after implementing their address verification API.

VP of Technology Development

PostGrid is exceptional as their address verification API is so powerful and fixes the issues with our raw address data and helps us find the redundant entries easily- It was a challenging and time-consuming task previously. But now we have everything right in front of us in seconds and the accuracy is commendable.

Information Technology Manager

Very straightforward, fast, and reliable address standardization API. We collect address data from multiple patients, clinical records, and providers and attempt to combine them into one. Addresses are often redundant or formatted differently in this process, which is our biggest challenge. PostGrid makes it easy for us to solve both of these problems simply by appending PostGrid to our datasets.

Project Manager

API response times and data accuracy are excellent. Address matching is accurate and we haven't experienced any outages. PostGrid provides address validation for our eCommerce solution for both domestic and international addresses. Each search option can be customized easily and accurately. PostGrid is a lot more accurate than other free options on the market.

Senior Developer

Frequently Asked Questions

What is International Address Verification?

International Address Validation involves verifying a non-US address by cross-checking it with a reliable address database of the corresponding country. The process is similar to validating US addresses, as international addresses are validated when they match the official address records of the country they belong to.

PostGrid provides an online international address verification service for timely and accurate mail delivery for both business and residential addresses. Our service includes address standardization, parsing, correction, bulk mailing, delivery point validation, bulk address validation, and more.

How Do I Use International Address Validation?

PostGrid's international address verification service is user-friendly, and we have a quick step-by-step guide available for you to start with. Additionally, PostGrid offers integrations for popular CRM platforms such as Salesforce and Zapier, making the installation process even more straightforward.

How Fast Is Your Address Verification API?

Well, At PostGrid, our Address Verification API delivers you the outcomes in just a few minutes and a few clicks! Somehow it is also dependent upon what you wish to verify- Does your address verification identify Residential or Commercial addresses?

What Are Some International Address Validation & Autocomplete Use Cases?

If you ask us- How can our international address verification help your business? PostGrid's data quality solutions can cleanse data and validate addresses for more than 245 countries and territories worldwide. We source global address and geocoding data, updating it regularly to keep up with any changes. PostGrid offers endless possibilities!

Our international address verification APIs improve address data by validating it against external postal data sources and enriching it with geolocation data. It ensures that your addresses are accurate and up-to-date, which can lead to improved delivery rates, reduced costs associated with undeliverable mail, and increased customer satisfaction. 

Some use cases are:

  • E-commerce checkout address capture at point of address entry
  • Shipping address validation
  • Updating Database of Customer Records
  • Capturing right address at point of entry

Sign up today if you wish to know more about what counts as an address verification!

How often do you update your database? - Monthly for the US, CA, UK, and AU and Quarterly for Other Countries

PostGrid updates its address databases regularly to ensure accurate and up-to-date records for the United States, Canada, the United Kingdom, and Australia. The updates happen monthly as per local and international standards. For other countries, the databases are updated quarterly.

These updates are based on available changes and additions to official postal address databases for every country. By regularly updating its databases, we provide our users with the most accurate and reliable address data for their global mailing and communication needs.

Talk to us to get started with international address verification.

Where Do You Get the Data From?

We source our data from a variety of certified data licensors. These include official postal authorities such as USPS, Canada Post, Royal Mail, and Australia Post, followed by commercial data providers like TomTom and DHL.

These licensors provide PostGrid with authoritative and reliable address data for various countries and territories worldwide. Our address databases are updated regularly based on available changes to the official postal databases of each country.

How Can I Integrate It Into My CRM?

 Our integrations improve the accuracy of your address data, ensuring that your mailings and communications are delivered seamlessly. Here's how you can do it:

  • Choose your CRM: PostGrid integrates with several popular CRMs, including Salesforce, HubSpot, and Zoho. Choose the CRM you want to integrate with.
  • Connect your PostGrid account: Once you add the API Key, connect your PostGrid account to your CRM by following the instructions provided by PostGrid by clicking here.
  • Validate your addresses: With PostGrid's international address verification service integrated with your CRM, you can now validate your addresses in real time. It ensures that you have accurate and up-to-date address information for your contacts.

You can also sign up for an account or contact our sales team to integrate our API right away!

Can I Install PostGrid locally?

Not at this time. Using this API requires some coding on the part of the user. Returns can be saved to a database for future reference. So, if you are still wondering- How can I get ROI with address verification? Get in touch with our Team of professionals- And we will be right there to help you through.

What Is CASS Certification, and How Does Address Verification Help?

USPS accredits address validation companies whose accuracy standards meet CASS standards. With PostGrid's API, USPS addresses are guaranteed to be delivered. Addresses can also be validated and corrected accurately based on the standards of the mailing industry. The mailing address that appears in the final API request may be different from the one you see in your API request and Dashboard.

How Can I Get Customer and Technical Support In Case I Am Stuck?

Yes, we do have emergency support available 24*7. You can contact us whenever you feel stuck or seek more information.

What Is USPS Address Validation? and, How Can I Get ROI With Address Validation?

Business and individual users can verify the accuracy of an address using the USPS (United States Postal Service) website before mailing a package or letter. There is no charge for this service. To verify that the address is correct, the USPS addresses database is compared to the address submitted. Aspects like the street name, city, state, country, and zip code are also confirmed. PostGrid provides quality data to you as per USPS standards.

What Counts As An Address Verification?

Address verification is a service offered to a business that verifies whether the address provided by the customer is accurate. An address may be verified using an API or by comparing it with a database of public addresses. Businesses must verify their addresses to protect themselves from fraudulent orders and minimize chargeback risks. Also, It helps businesses avoid problems such as undelivered packages by verifying addresses.

How Does Address Validation Help?

Verifying an address can be done in a few different ways. Address verification APIs are one option. By entering an address into the system, businesses can validate it. To confirm the accuracy of the address, the address is checked against a database of verified addresses. Third-party service providers can also be used.

Businesses can check addresses in these providers' databases for verified addresses. Additionally, businesses can verify addresses using the providers' systems. Maintaining your verified address database is part of the process. It is more time-consuming and more costly, but it offers a greater degree of control.

How to Opt For Address Verification?

You can contact a PostGrid sales representative and sign up for our services. Also, you can get a USPS address verification API for your business. The process is straightforward. Get started today!

How Does Address Verification Work?

Based on years of experience in matching and resolving addresses, PostGrid's address verification API leverages advanced match logic. The street-level validation of US and world addresses is done by matching the address to millions of records based on the country, state, and zip code information. We have implemented our expertise throughout the entire process to identify, detect, and fix issues we've encountered and fixed over time.

How Many Countries are Covered?

PostGrid's address verification service covers more than 245 countries and territories worldwide. It means that no matter where your business needs to communicate, Our APIs ensure your address data is accurate and reliable. 

PostGrid's extensive coverage is made possible through several authoritative sources, including official government postal authorities, commercial data providers, and other reliable sources.

Book a Demo to let us help you know more about international address verification today!

Does Address Validation API Provide Identity Data?

No, PostGrid's Address Verification API does not provide information on residents.  Additionally, we do not unveil any identifiable information that is behind the address or even address metadata. Our Restful API provides data in the return if a customer inputs an address. 

What Are Some Features Offered By You?

There are the features that you can avail of while using PostGrid:

  • Verify addresses instantly
  • CSS Certification
  • Restful API that allows you easy, flexible, and accurate integrations to your CRMs or your system solutions
  • Scalable Solutions
  • Premise Level Data

Sign up with us today, and let us help answer questions like Does your address verification offer Geocoding (Lat & Long)? and a lot more.

Can I Use My Native Language for the International Address Validation, and Will the API Return the Address in the Same Language?

Yes, Transliteration at PostGrid helps you to choose the response language. However, our default language is English. In case you have international bulk verification requirements. You can set your response that easily match the native language of your end-user. For instance, if you keep thinking about- How address verification helps eCommerce businesses?-  Well, the answer is a yes. If you are an American eCommerce company operating in Germany or Russia can set responses to return in the Russian characters against English. The response setting as well as the customization is only available to those, who are sending in API requests.

Still, Have Questions?

We understand that you may have many questions constantly popping up in your mind. Sign up with us today or Contact us to know more about PostGrid!

Ready to Get Started?

Start transforming and automating your offline customer communications with PostGrid