International Address Validation Service

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output Address result

3075 14th Ave. #212, Markham,
ON, L3R 5M1, Canada

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Best Address Verification Software and
Address Validation Services

address api to send and track mails

One of the most important steps of direct mail marketing is verifying the addresses of your mailing list.

Sending mail pieces to the wrong addresses can negatively affect your company and brand’s image, especially if you’re sending confidential information via direct mail, such as invoices, billing statements, and appointment reminders with clients’ details and others.

Avoiding this step in your direct mail marketing may cost you, your clients, for life. So, choose a wiser option, and consider investing in a reliable and efficient top-rated address verification software service.

How wrong addresses in your mailing list
can slow down your business

Lost Sales Opportunity: Not updating or verifying your mailing list with the official database of Royal Mail may result in you sending irrelevant offers and discounts to your prospects. It’s also keeping your offers from the prospects who’d naturally be interested in your offerings. Hence, you’re missing out on good sales opportunities.

Decreased Customer Retention Rate: Continuously receiving irrelevant direct mail, your customers may get frustrated and stop reading your mailpieces altogether. It can have a bad impact on your repeat business and customer retention rate.

Increase in Misspending: By sending direct mail to the wrong addresses, you keep spending money on the direct mail pieces that never reach any of your right prospects. Plus, sometimes, you even end up sending the same mailpiece to a single potential customer more than once—they all add up to the cost of your direct mail campaign.

Ruin Your Brand Reputation: Sending direct mail with typos and errors may show your company as a non-professional brand. People tend not to trust such companies.

personalized direct mail

How can your business benefit using
address validation software?

Improved Customer Experience

With the right address verification system in place, you ensure your mailpieces always get delivered to the correct addresses. Besides that, some address verification service, like PostGrid, also provides features like address parsing, standardization, and verification, which help your brand’s professionalism.

Entry point correction

With an address verification software tool, you cannot only verify your current mailing list but each address that enters your system right at the point of entry. After integration, the software gives the right address suggestions as your prospects type their location details. It decreases your potential customers’ effort and the chances of human error. Plus, it instantly fixes typos and formatting errors too. Furthermore, address validation services like PostGrid provide you with high-quality data, as it has Royal Mail’s certified addresses and is GDPR compliant.

On-Time Delivery

The addresses’ typos and errors result in delayed and late delivery of your direct mail. You can avoid this problem by investing in an address verification & validation program and ensuring each of your direct mail – whether urgent or marketing – always reaches the recipients on time so that you control things in your own time.

Better returns

By installing an automated system like PostGrid address verification and validation software, you ensure that only high-quality data is entering your system. This way, it becomes easier to send relevant offers and discounts to the right prospects without any lost opportunity. This direct mail, when done right, increases the return on investment.

Frequently Updated Mailing List

Despite how huge or small your mailing list is, manually updating it is a real pain. Plus, as businesses keep growing, the number of prospects in your mailing list also keeps on increasing. Hence, investing in automated address validation software is a wiser option. It makes it easier to check and update your mailing list.

No more wastage of time

If you start checking your addresses, believe it or not, but it may take you ages to complete this task. And yet, you can’t avoid human error. Plus, the new addresses entering your system are still left with from the validation. An address verification software program can keep you from all these tedious tasks and save you a lot of time.

More conversions

Right, and error-free addresses are the base of your direct mail campaigns to engage with your customers, as your mailpieces represent you and your brand. And with correct customer details, you can experience a reduced bounce rate and better communications with your customers, eventually, increasing your lead conversion.

Get in front of decision-makers

With the right addresses in your mailing list, your direct mail pieces reach right in the hands of the decision-makers.

Have High-Quality Data

All the addresses that our address validation tool provides are cross-referenced from different credible sources. Hence, the data would always be of high quality. Besides that, we provide address parsing, standardization, and formatting facets along with the most accurate data for your mailing list.

address verified personalized mails

How does address verification software work?

The right information and message you want to convey to your prospects should reach the right prospects and customers. A top address validation service system like PostGrid is a wise and smart way to do it.

The automated tool makes sure that the addresses entering your system and the ones that already are a part of it are accurate, error-free, rightly formatted, parsed, standardized, and verified according to the official database of Royal Mail.

The address validation software also helps clean up your data and remove duplicate addresses from your mailing list, remove spelling errors and typos, and make sure that the data is similar in formatting. Plus, it’s easier to update the mailing list over and over again with the updated official database of Royal Mail.

Features of PostGrid's Address
Verification Software

ISO 9001, 14001, 27001, 2701 Certified

All the addresses we have are PAF certified, which means we have a list of over 28 million deliverable addresses in the UK. Furthermore, our database has the details of every house of apartment and the properties which are still under construction.

Delivery Point Verification

Our address verification software, along with validating, parsing, standardizing, and formatting all the addresses. This way, all the data in your mailing list and system is of high quality.

Matching Technology

PostGrid makes sure that no duplicate address exists in your system and that every address is verified against the official database of Royal Mail. This way, you can also prevent misspending.

Address Validation

PostGrid address validation service ensures that only accurate, errorless, and right addresses enter your system. The process involves providing address suggestions to your prospects as they enter their details.

Address Parsing

Dividing addresses into different components is called address parsing. To keep the wrong addresses from entering your system, PostGrid address validation software parses each of the present addresses and the ones freshly filling your mailing list.

Data Cleansing

PostGrid address verification service also helps cleanse the data of your system by fetching it from your CRM after integration. All the addresses present in your mailing list are checked and verified. This step ensures a minimum bounce rate and helps you reach out to your prospects and current customers with more accuracy.


Besides verifying and parsing addresses, standardization of them is also necessary. PostGrid helps you with this step too. All the details are checked for discrepancies, typos, capitalization, and abbreviations. PostGrid helps eliminate duplicate addresses in the database and standardize all the data against the database of Royal Mail in real-time.

Strengthen your mailing list with a qualitative contact database by incorporating professional address verification software. It adds value to your customer experience and boosts your sales and revenue generation with accurate and valuable information.

With PostGrid address validation service, you can rest assured that every mail being sent reaches the right destination at the right time with its integrity intact.

FAQs About Address Verification Software Service

I performed an address lookup, but the address was not returned. Why is that (is it ok while working with your address verification service)?

When you cannot locate a new address, it is probably because it has not yet been added to the dataset. Every day, we update our databases. You should see the address reflected in our service as soon as it is added to our database.

We would be happy to help if your customer’s property is not brand new, click here to contact us. The data (It is owned by third-party providers such as USPS, Royal Mail, etc) cannot be altered (as it belongs to the provider), so if an address is incorrect or missing, you should contact us directly for address verification services.

My address verification service failed when Google Maps successfully found it. Why is that?

With our address validation software, we determine whether an address is a valid destination for receiving mail. It should not be used to verify the validity of a mailing address as Google Maps focuses on locality and walking/driving directions. Royal Mail does not necessarily recognize addresses found on maps as official addresses.

How is PostGrid's Address Validation or verification Service priced?

PostGrid’e address verification service is priced based on monthly or yearly packages. Our every plan provides you with a specific volume of verifications for a predetermined price. For every verification using our address validation software, there is a monthly allotment of verifications. And you will be charged an overage price per request once you exceed the limits.

How accurate is your data when talking about Address Validation Service?

At PostGrid, We partner with the best data providers on the market to make sure you and your customers have the best experience. We select the top data providers in each industry to deliver structured data that meets industry standards, guaranteeing accurate, formatted addresses. This means your customer data will be clean and valid for use with major couriers and logistics for increased international deliverability.

Our data is always clean and up-to-date so you can be sure your customer information is valid for courier and logistics services. Address data is updated monthly or quarterly for most countries, but in the UK it is updated daily.

What all is compared when opting for the address verification service?

Your customer provides their complete address for verification, but only the numeric portion of the address is verified by the issuer. Typically, only the house number and ZIP/postal code are compared. This can lead to some confusion when a customer enters an address for an apartment or suite.
If the issuer can’t get an exact address match, it returns the code API that indicates how the address verification failed. For example, code A indicates that the address matches but the ZIP code doesn’t match.

Integrates with your favourite tech stack & tools

Easily Improve your workflow and automate print & mail through seamless integration capabilities.

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