2025-09-09 00:00:00 With the bitkasten you get a digital mailbox. You can receive post securely and digitally, send information and file it cleverly - without any e-mails or scanning. Your information is as safe in the bitkasten as in a safe. Thanks to the bitkasten, letter post is becoming more sustainable. You reduce your paper waste and protect the environment by reducing your carbon footprint (no transport, no unnecessary printing).