bitkasten is a digital letterbox from bitkasten GmbH in Nuremberg. Senders such as companies or municipalities deliver postal mail digitally; recipients see the mail of all participating senders in one place with a single login. Delivery uses the postal address, without needing an email address. The platform includes a long-term archive for documents, two-way information exchange with forms, and a qualified electronic signature (QES). Senders can connect it to their existing systems. The service runs as a cloud solution in the browser and through an app.
The provider is headquartered in Nuremberg, Germany. According to its own press release, dvs – Deutscher Versand Service of Ratingen took a 51 percent majority stake in March 2023; both companies are based in Germany. The provider states that the service runs in German data centres and describes the platform as GDPR-compliant. For European organisations that deliver sensitive personal data by digital post, this keeps the data within EU jurisdiction. Ask the provider about the data processing agreement, sub-processors and retention periods in the archive.