Data protection, productivity, and compliance – without compromising usability.
Threema has conducted an extensive study on messenger security among industry leaders.
More than 8,000 organizations and over 12 million people worldwide trust Threema for secure communication.
Threema Work is the professional communication solution for organizations that want to handle confidential communication easily and efficiently while ensuring strict data protection compliance. The solution is suitable for SMEs, large enterprises, and associations.
Enforcement of corporate policies and compliance regulations
Powerful user management and centralized access control (MDM)
Integration into existing systems (API)
Prevention of shadow IT through a privacy-compliant communication solution
Easy onboarding of employees, even without company-owned devices
Protection against unauthorized access, even in case of device loss or staff turnover
Threema’s services are operated exclusively on our own servers in Switzerland. As members of Swiss Made Software, we stand for independence, innovation, and quality.
With Threema Work, our SaaS solution, you consistently protect sensitive business data from unauthorized access and data leakage. Our servers are operated in a highly secure data center run by an “ISO 27001”-certified colocation partner in Zurich.
Perfect Forward Secrecy protects past communication even if keys are compromised
Thanks to zero-knowledge architecture, message content is visible only to the sender and the recipient – not even Threema has access
Regular audits by independent security experts
Optional on-premises solution for maximum data sovereignty
Provide your employees with an intuitive business messenger that includes all the features they need for daily collaboration. The app is available both as a mobile app and as a desktop app.
Text and voice messages as well as group chats for team collaboration
Secure voice and video calls
File sharing
Create and send polls
Off-hours policy
Edit and delete messages
Emoji reactions
Management of groups, broadcasts, and contacts by administrators
Additional protection of confidential chats via PIN or fingerprint
Companies often face the challenge of exchanging sensitive information securely, quickly, and easily with external contacts. Private messengers often seem to be the only solution, but they come with risks.
This is where EasyConnect comes in: The company creates an individual QR code and sends it to the external contact. The contact scans the code, opening a secure and confidential communication channel. No complicated registration or detours are necessary. This enables secure corporate communication seamlessly beyond the company’s own solution.
In large organizations, employees must be able to quickly and easily find and contact anyone in the company, regardless of department or location. At the same time, roles such as CEOs or department heads require special protection from unwanted inquiries.
With Circles, certain users or groups can be made visible or invisible to others. This keeps internal communication smooth and efficient, while consistently protecting privacy and maintaining hierarchies.
Data sovereignty for your corporate communication.
Secure. Confidential. Reliable.
Whether for fast, GDPR-compliant information distribution, secure communication in crisis situations, or as a privacy-compliant alternative to conventional messengers – Threema Work is the right solution for any scenario.
With Threema Work, you can distribute information quickly, securely, and efficiently – reaching your entire workforce, specific departments, or external partners reliably and in full compliance with data protection regulations.
Conventional messengers are often unsuitable for the secure exchange of business data. Learn what matters when it comes to secure and GDPR-compliant communication.
In the event of an IT outage caused by a cyberattack or technical disruption, a crisis-proof business messenger like Threema Work ensures that communication remains possible and business operations continue.
Threema Work is the official instant messenger for the entire company. It’s prohibited to use conventional chat apps for business purposes on company phones.
Thousands of companies from various industries rely on Threema Work daily for their secure business communication. From medium-sized businesses to international corporations and military, from authorities to healthcare facilities – Threema Work convinces with high security standards, an intuitive interface, and reliability.
Threema Work Integration: Alerting and Fast Information Distribution
Threema Work as official company messenger
Privacy-Compliant Transmission of Clinical Trial and Patient Data
monthly, per user
monthly, per user
Legal certainty through comprehensive GDPR compliance
Consistent end-to-end encryption for comprehensive protection of sensitive data
Zero-knowledge architecture for highest security requirements
Threema Work is the secure communication platform for organizations. To learn more, please refer to the Threema Work website.
The Professional price plan of Threema Work includes two Threema Broadcast IDs, where the number of recipients corresponds to the number of Professional licenses in Threema Work. If, for example, there are 80 Professional licenses in Threema Work, there are 80 recipients available in Threema Broadcast.
The use of multiple Broadcast IDs or the communication with more recipients than Threema Work users is not included and must be purchased by means of a separate Broadcast ID. Additional IDs are not linked with Threema Work.
Threema supports nonprofit organizations, schools, and other educational institutions in their endeavor to increase privacy protection with preferential terms on Threema Work.
For Threema Broadcast, no discounts are available.
Threema OnPrem is the self-hosted version of the SaaS solution Threema Work. When using Threema OnPrem, all data is stored on your company’s server, which translates to complete data ownership and total and exclusive control over every aspect of the communication tool. The app, the administration console, and the feature set of Threema OnPrem and Threema Work are, in essence, identical.
| Threema OnPrem | Threema Work | |
|---|---|---|
| App |  iOS, Android, web app |
iOS, Android, web app |
| Dashboard | |
|
| Broadcast | |
|
| Gateway (Message API) | |
|
| Possibility to communicate with users of the Threema and the Threema Work app |  |
|
| Server location | Custom | Switzerland |
| Recommended number of users | from 200 | >15 |
| Minimum contract duration | 3 years | 1 year |
| Price | On request End-user licenses, server license, setup fee, etc. |
See Threema Work pricing |
Threema Work licenses are available from CHF 12 per year. NGOs, schools, and other educational institutions benefit from preferential terms. Details about the price plans (Core and Professional) can be found on this page.
To get acquainted with Threema Work, make sure to activate a free trial, and test Threema Work without restrictions and without any purchase obligation.
You can try out Threema Work free of charge for one month with up to 30 users. Set up a trial subscription without obligation.
Threema Work is available for Android and iOS and can also be used on tablets.
With the desktop app and the web client, Threema can also be used on desktop computers.
Using Threema ought to generate as little data on our servers as possible – this is part of the concept. For that reason, data like contacts or group chats are stored in a decentralized way on user devices instead of on a Threema server. Our servers assume the role of a switch; messages and data are forwarded, but not permanently stored. Where there is no data, there is nothing to be accessed or misused. However, without some kind of (temporary) data storage, there cannot be any asynchronous communication. In the following, we will explain what kind of data we store, how we store it, and for how long.
Further information can be found in the Cryptography Whitepaper.
Threema uses tried-and-tested asymmetric cryptography to protect messages and calls between sender and recipient (and the communication between the app and the servers). Threema uses the open-source library NaCl for encryption. Since the Threema apps are open source, anyone knowledgeable enough can confirm Threema’s security.
There are two layers of encryption: The end-to-end layer between the conversation participants, and an additional layer to protect against eavesdropping of the connection between the app and the servers. The latter is necessary to ensure that an adversary who captures network packets (e.g. on a public wireless network) cannot even learn who is logging in and who is communicating with whom.
All encryption and decryption happens directly on the device, and the user is in control over the key exchange. This guarantees that no third party – not even the server operators – can decrypt the content of the messages and calls.
Strength of the encryption: The asymmetric ECC based encryption used by Threema has a strength of 255 bits. According to a NIST estimate (page 54), this corresponds at least with the strength provided by 2048 bit RSA. ECDH on Curve25519 is used in conjunction with a hash function and a random nonce to derive a unique 256 bit symmetric key for each message. The stream cipher XSalsa20 is then used to encrypt the message. A 128 bit message authentication code (MAC) is also added to each message to detect manipulations/forgeries.
Perfect Forward Secrecy: Threema supports Perfect Forward Secrecy. For more details, please refer to this FAQ entry.For detailed technical information about the cryptography in Threema, read the Cryptography Whitepaper.
