Address check

Fast and accurate addresses, worldwide

With our international address check you verify every address in seconds. Anywhere in the world. Not only does that boost trust in your webshop. It also increases conversion in your checkout. A must‑have for you and your customers!

The benefits of the address check

  • Fast checkout, higher conversion

    Type a few characters and the full address appears. A smooth address entry speeds up your checkout and makes customers happy.

  • The right address, worldwide

    Our data is sourced from reliable international postal and parcel companies. So you always know every address is correct.

  • Illustratie van een laptop met het woord API weergegeven als code

    Easy to integrate

    With our API or plug‑in, you can easily connect the address check to your webshop. Whether you use Magento or WooCommerce.

Helpful for you and your customers

With the address check, addresses in more than 240 countries / regions are automatically completed and verified. Customers enter their details quickly and error‑free, wherever they live.

How does the address check work?

  1. 1

    Connect the address check to your webshop

    Use the API for Dutch and worldwide address checks, or one of our plug‑ins for systems like Magento, WooCommerce, ShopWare or Opencart for Dutch address validation. Need help? We’re here for you.
  2. 2

    Enter the address in the checkout

    Your customer is about to place an order. So you want a smooth checkout. As soon as they type a few letters or numbers, the address check instantly suggests matching addresses.
  3. 3

    Complete the order

    Your customer selects the correct address and checks out with confidence. This leads to more satisfied customers and higher conversion for your webshop.

What does the address check cost?

The address check is free for customers with a parcel contract at PostNL. This applies to addresses in the Benelux. International validation starts at just € 0.02 per check (per API call). Choose a bundle that matches the number of addresses you want to validate.

Not a customer yet?

No problem! Leave your details and we’ll get in touch.

Demo address check

Experience the efficiency and speed of our address check. Contact us to request a demo.

What do other customers say?

“Thanks to PostNL’s international address check, we increased our conversion, drastically reduced incorrect addresses, and significantly lowered customer questions, especially in France and the UK.”

Sensiseeds IT Manager

“With PostNL’s address check, checkout runs smoothly in both the Netherlands and Germany. Thanks to smart autocomplete, German customers always enter the correct address, error‑free. The result: maximum conversion and happy international customers.”

Superyoga Owner

“The address check we use at Moonpig and Greetz has proven essential for accurate and on‑time deliveries!”

Moonpig, Greetz Software Engineering Manager

Professional werkt rustig op een laptop in een modern kantoor

Postcode table: always up‑to‑date addresses

With the postcode table you get all Dutch addresses in a handy .csv file. A complete and reliable database that’s always up‑to‑date. Manage and process address data quickly and without errors.

We’re here to help

Curious what the address check can do for your webshop? Fill in the form below and we’ll get back to you soon. You can also email us at datasolutions@postnl.nl. We're here to help!