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Deployment of the printing, enveloping and distribution service

The printing, enveloping and distribution service (TKJ service) makes it possible to send paper mail through Suomi.fi Messages. You can read about the functionality in more detail on the page Sending paper mail.

Please note that the TKJ service is available only if your organisation also uses Suomi.fi Messages to send messages electronically. Additionally, the TKJ service can be used only with the following dispatch interfaces:

  • REST API
  • WS API
  • SFTP API

The printing, enveloping and distribution service is not available via the email interface, the SMTP API.

You will find the different stages of the deployment process of the TKJ service below. It is advisable to already enable the TKJ service as part of the deployment process of Suomi.fi Messages so that you can plan the entire process at the same time.


Updated: 3/2/2026

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