Ready to improve data quality?
You can be up and running in minutes with a 30-day free trial or book a demo to see how Postcoder fits into your digital services.
Postcoder helps public sector organisations capture verified address and contact data – improving service delivery, reducing administrative waste and supporting compliance with data quality obligations.

Public sector organisations hold large volumes of data – and the quality of that data directly affects the quality of services delivered. Wrong addresses mean letters and appointment reminders don't arrive. Invalid contact details mean vulnerable people are harder to reach. Duplicate or inaccurate records create inefficiency across every team that relies on them.
At the same time, public bodies face increasing scrutiny over data accuracy, GDPR compliance and the responsible use of public funds. Capturing accurate data at the point of entry is an issue of governance too.
50,000people move home in the UK every week, making address data one of the most rapidly degrading assets any organisation holds. Validating it at the point of capture is far cheaper than correcting it later.Royal Mail
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.
Postcoder's verification tools to support accurate records, effective communications and responsible data management:
Verified address capture via postcode lookup or autocomplete sourced from authoritative Royal Mail and national datasets.
Confirm email addresses are real and deliverable before sending appointment reminders, service notifications, or consultation invitations.
Verify mobile numbers are genuine and live. Support cost-effective outbound calling, SMS alerts and emergency communications.
Secure customer-facing account registration and authentication with one-time password SMS verification.
For benefits payment, grants disbursement, or any direct bank transfer, validate account details in real time to reduce failed payments.
"It's solving the problem where we need to have the latest accurate postal information from Royal Mail for DBS checks. Without this, we cannot accurately submit applications. Very easy to use and easy implement via integration and the response time when using the tool in real world applications is quick, effective and accurate."
Craig F. Employment Vetting Manager / G2 review
"Postcoder offers a seamless integration with our services. It is very popular with our customers."
James Gutterson Commercial Manager / Signicat
"Customer service is very good, always helpful in answering queries. The API flexibility is great. It's very fast and can provide a lot of information if required."
Peter B. ICT Director / G2 review
Businesses rate Postcoder 4.7 stars out of 5 on the world's most trusted software marketplace.

You can be up and running in minutes with a 30-day free trial or book a demo to see how Postcoder fits into your digital services.