Ideal Postcodes Blog

Our New Shopify Plus Address Validation Integration

Written by Doaa Kurdi | Oct 29, 2025 9:52:12 AM

Simplify Checkout and Ensure Accurate Deliveries with Ideal Postcodes One‑Step Address Validator 

 

We've released a new Shopify Plus integration that adds address validation directly to the checkout experience on your ecommerce store. This allows merchants to verify and correct delivery addresses before orders are submitted, helping to reduce failed deliveries and improve data quality. 

The app is available now through the Shopify App Marketplace.

 

Why We Built It

Shopify is one of the most widely used e-commerce platforms in the UK and internationally. While it offers a solid foundation for online retail, its built-in address verification typically requires several steps, such as prompting customers to review or confirm an address suggestion. 

This extra friction can disrupt the checkout flow and may lead to order issues if the wrong version is selected.

The One‑Step Address Validator is designed to solve this by autocompleting and validating the address form in a single step. It simplifies the experience for customers and helps ensure accurate delivery data from the start. This only works on Shopify Plus.


Features of the App 

Our Shopify Address Finder app integrates directly into the checkout process. It includes: 

  • Real-time address validation and auto-completion using authoritative data sources (e.g., Royal Mail and USPS) 

  • Automatic correction and formatting of address fields

  • Support for UK and international addresses

  • Recognition of different languages and address formats, including local variations and nuances

  • Full compatibility with the Shopify Plus checkout extension framework

  • Checkout compatibility, built specifically for Shopify plus checkout extension framework 

  • Customisable styling, so the interface can match your store’s branding 


Available Now on the Shopify App Marketplace

You can install the Address Finder app directly from Shopify.

To begin, create a free Ideal Postcodes account, then follow our Shopify Address Validation documentation. You can test the service with 50 free address lookups. 

If you have any questions or need help with setup, do get in touch.