Threema OnPrem
Self-Hosted Business Messaging
About
This secure messaging solution offers organizations complete data sovereignty by hosting on their own servers. It provides end-to-end encrypted communication for teams, including voice and video calls, and secure file sharing, all protected by PIN or fingerprint.
What's New in Threema OnPrem
7.3.1
July 27, 2026
• Easy device switch: When switching to a new iPhone, you can transfer your Threema OnPrem data directly to the new iOS device using Quick Start (can be disabled by the administrator) • Various UX improvements • Improvements in relation to the logging system • Improved video converting when “Original” is selected as the quality • Memory and performance improvements when handling large files • Improvements in relation to Threema calls • Fixed a bug in relation to group chat notifications • Fixed a possible bug that could occur when encoding URLs • Fixed a bug in relation to voice messages • Fixed various bugs in relation to the custom company logo • Other improvements and various bug fixes
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FAQ
What is Threema OnPrem?
Threema OnPrem is a self-hosted communication solution designed for organizations that require the highest level of security and data sovereignty. It allows companies to host their own independent communication environment on their servers.
How does Threema OnPrem ensure data sovereignty?
Data sovereignty is achieved through 100% self-hosting. All communication data resides on your company's own servers, giving you complete control and eliminating reliance on third-party infrastructure.
What security features does Threema OnPrem offer?
It utilizes Threema's proven security architecture with end-to-end encryption for all messages, voice, and video calls. Chats can be further protected with a PIN or fingerprint.
Can I use Threema OnPrem on multiple devices?
Yes, Threema OnPrem supports cross-platform use. You can access it via its mobile app, a desktop application, and a web client, ensuring seamless communication across different devices.
Is Threema OnPrem suitable for government agencies and police forces?
Yes, the application is specifically highlighted as ideal for government agencies, police forces, and industrial companies due to its unmatched confidentiality and complete data sovereignty.
Does Threema OnPrem have ads?
No, Threema OnPrem is ad-free. As a self-hosted solution focused on enterprise security, it does not display advertisements to users.
What is the rating for Threema OnPrem?
Threema OnPrem has a perfect rating of 5.0 stars based on 2 user reviews, indicating high user satisfaction with its features and performance.
How do I set up Threema OnPrem?
Before using the app, Threema OnPrem must be set up on your company's server. More detailed information and setup guidance can be found on the official Threema website.
