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The AddressChecker API enables search for domestic addresses for mail. This API can be used for auto-complete (or type-ahead) dialogues for faster addressing entry. It is also used to validate addresses.


In order for you to gain access to the APIs, you and your organisation must meet the following pre-requisites:

  1. Your organisation must have an active NZ Post or CourierPost account number. The account number starts with a 9 or 5.
    If you do not have an account number, then you can call 0800 COURIER.
  2. You must have an online New Zealand Post account. You can register here by completing the registration form. The email address you provide on the registration form will be your Developer Portal username.
  3. You must have reviewed and accepted the Terms and Conditions for use of the NZ Post Group APIs.
  4. You must have requested and received access to the API.


For developer integration enquiries, please email Support is available during New Zealand business hours.