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Remove form friction, reduce delivery errors and validate customer details in real time.

A customer has found what they want, added it to their basket and started to check out. At that point, the work of getting them there is done. What happens next is down to how easy your checkout is.
Slow or broken address entry is one of the most common reasons customers abandon at checkout. A form that doesn't recognise their postcode, a flat number that won't populate correctly, a mobile field with no format guidance. Each one is a small friction that, for some customers, is enough to abandon ship.
Manual address entry is slow and error-prone, particularly on mobile
Customers in flats and new-builds can't find their address, or have to enter it manually
Invalid email addresses and unverified mobile numbers lead to failed order confirmations and delivery notifications
Incorrect addresses slip through and cause failed deliveries, returns, and support tickets
Postcoder speeds up checkout by replacing manual address entry with a fast postcode or autocomplete lookup. Customers type their postcode or the first line of their address and find it in a few keystrokes, on any device. The address populates automatically, correctly formatted, with no manual correction needed.
Multiple Residence data is included as standard, so customers in flats, apartment blocks and new-builds can find their exact address just as easily as anyone else. Add rooftop-level coordinates to every result, giving your courier the precise location rather than just the street.
Email and mobile validation run at the point of entry, so order confirmations and delivery notifications reach the right place. The result is a smooth sailing for your customers and fewer problems to resolve after the order is placed.
Postcoder is a multi-feature API you can integrate into your website or app quickly and easily using pre-built integrations, sample code and API reference, all within clear and well-structured docs. You can be up and running in minutes with a free trial, and Postcoder's support specialists are always on hand if you need help.
Postcode and autocomplete search that works on any device. Customers find their address quickly, validated data enters your system automatically and your checkout form gets shorter and simpler.
Learn more about address lookupCovers the 800,000 UK addresses that share a front door, including flats and student halls. Customers who previously had to type their address manually can now find it directly in the results.
Learn more about Multiple ResidenceEvery address lookup returns precise latitude and longitude accurate to rooftop level. Your couriers navigate to the right front door, not just the right street.
Learn more about address lookupConfirms that the contact details captured at checkout are real and deliverable. Keeps your order confirmations, dispatch notifications and delivery updates reliable.
Learn more about email validation Learn more about mobile validation
"Having a more simplified checkout page with the help of Postcoder has had two major benefits to our business. Faster checkouts by customers who haven't had to type in their full address, and a major reduction in data errors – where we saw a big drop in incorrect details entered."
Alex Woods Digital Marketing Executive / Victorian Plumbing
"The rooftop lat/long coordinates have proven to be far more accurate than any other service. We use the service to send couriers a specific lat/long every time, which has hugely increased our successful delivery rates."
Laura Bailey E-commerce Product Manager / Pasta Evangelists
"The auto complete address allows customers to easily checkout by reducing any friction on the address step. We rarely have customer queries or complaints around postcodes or addresses not found or missing."
Kevin R. eCommerce Manager / G2 review
"It quickly fetches the address from the postcode to save the customer typing it out. Really simple to use, plug and play with the API, never have any issues with it."
D.M. Head of Ecommerce / G2 review
Businesses rate Postcoder 4.7 stars out of 5 on the world's most trusted software marketplace.

Join over 10,000 organisations using Postcoder to capture better data and deliver better experiences. Start your free 30-day trial today - no credit card required.