Maximum security and total data ownership with Threema OnPrem for enterprises
Threema OnPrem. Self-Hosted — description
Threema OnPrem is the self-hosted communication solution for organizations with the highest security requirements. The combination of Threema’s proven security architecture and complete data sovereignty creates an independent communication environment that is unmatched in terms of confidentiality – ideal for government agencies, police forces, and industrial companies.
Advantages of Threema OnPrem: • 100% data sovereignty through hosting on your own servers • Proven Threema security architecture • Confidential communication in teams, groups, and projects • End-to-end encrypted voice and video calls • Secure exchange of files and documents in all formats • Cross-platform use thanks to mobile app, desktop app, and web client • Additional protection of confidential chats with PIN or fingerprint
NOTE: Before you can use this app, Threema OnPrem must be set up on your company server. For more information, visit threema.com/onprem.
Enjoy using Threema OnPrem!
Latest version
Version
6.5.0o
Update
Jul 13, 2026
Package ID
ch.threema.app.onprem
What's new
Jul 13, 2026
- Increased the Android SDK level to 36 (Android 16) - Fixed a bug in relation to reproducible builds - Fixed a bug in relation to the verification level of known Threema contacts - Various UX improvements - Various improvements and bug fixes