Postcoder is a hosted API that provides address lookup and form validation. It lets you quickly and seamlessly add user-friendly features like address lookup and email address validation to your websites and mobile apps. Postcoder is an application designed to streamline address management and postal code handling. It provides users with efficient tools to manage and validate postal addresses, ensuring accuracy and consistency across various platforms. The app's primary functions include address validation, auto-completion, and geocoding, which are essential for businesses and individuals needing to process large volumes of address data.