Last modified: Aug 18, 2025

Altinn 3 Correspondence

Altinn 3 Correspondence is a messaging service, enabling the secure exchange of correspondence, such as official letters, notifications, and other documents, between public agencies and individuals or businesses.

  • About Altinn Correspondence

    Altinn Correspondence is a secure and efficient digital service that enables public sector organizations to send messages to citizens, businesses, and other public entities. Since all organization numbers and personal identification numbers have a inbox in Altinn Arbeidsglate you will always be able to reach the correct recipient. An Altinn 3 Correspondence automatically becomes a dialogue and is made available through Dialogporten in Altinn 3 Arbeidsflate.

  • What do you get?

    An overview and description of the key functionalities and features of Altinn Correspondence.

  • Getting Started

    You can either use Altinn as a service owner to send messages, or integrate with Altinn as an end-user-system.

  • Concepts

    Explanation of concepts related to Altinn 3 Correspondence

  • Transition solution

    Transition solution for Altinn Correspondence

  • Reference documentation

    Reference documentation for Altinn 3 Correspondence