Twoday is a spin-off of the former consulting division of the Norwegian business software company Visma. It uses Retarus Transactional Email for its digital signature solution, Addo Sign.
Twoday has been fully independent since 2025 and operates primarily in Scandinavia and Lithuania; its headquarters are located in Copenhagen. With 2,300 employees across more than 25 locations, the company generated annual revenue of just over 390 million euros in 2025. Since 2015, Twoday’s software portfolio has included the digital signature solution Addo Sign, which supports eiDAS-compliant electronic signatures.
IIn the past, Twoday used Addo Sign to send email notifications from Addo Sign, first a self-hosted Microsoft-based solution and later a U.S. provider. However, because Addo Sign is also used for government tasks in Denmark and Sweden, among other things, a purely European provider was needed.
So Twoday set out to find a new email delivery solution. It was essential that the solution’s services comply with the GDPR, particularly Article 9, and – like Addo Sign – be available as a SaaS offering. Twoday discovered Retarus through its own online research.
Retarus’ services operate entirely without American hyperscalers, thereby meeting Twoday’s requirements and expectations regarding resilience and sovereignty. Following a brief technical exchange via email and the signing of the contract in May 2025, development at Twoday began immediately upon the contract being awarded. Thanks to the well-documented programming interfaces, Retarus Transactional Email was integrated into Addo Sign after about two months and went live at the end of July 2025.
Twoday quickly and easily integrated Retarus Transactional Email into its last remaining dependency on U.S. providers.
Twoday is completely satisfied with the quality of service. In the future, the Retarus service could therefore be integrated into additional Twoday software products.
For further details please refer to our latest customer story.
