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.
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
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
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
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 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

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.
