The messenger that puts security and privacy first.
Pay once, chat forever.
No collection of user data. Open Source.
Just like email, instant messaging has become an integral part of everyday work life. Threema Work is the secure and privacy-compliant messaging solution for organizations of all types and sizes. It’s used for both internal and external communication by large corporations and small to medium-sized enterprises, government agencies and police forces, hospitals and blue light organizations as well as NGOs and educational institutions.
Guaranteed Privacy, Strong Encryption, Open Source
Threema is the instant messenger designed to generate as little user data as possible. All communication is end-to-end encrypted, and the app is open source.
Chat Anonymously: No Phone Number Required
Each user generates a random Threema ID when setting up the app. Linking a phone number or email address is optional.
No Collection of User Data, No Ads
Services that are financed by advertising collect user data in order to target their ads. Threema is not financed by advertising and does not collect user data.
100% Swiss Made and GDPR-compliant
Threema is a true Swiss company hosting its own servers in Switzerland. From software development to customer support, everything is done in-house. The service is fully GDPR-compliant.
Versatile Features, No Gimmicks
Privacy Is Worth Paying For
There is no such thing as a free lunch. If you don’t pay with money for a service, you pay with your data instead.
Find out how Threema stacks up against other messengers like WhatsApp, Signal, or Telegram in the comprehensive messenger comparison.
Everything you need for encrypted messaging in your organization.
The secure enterprise messaging solution offers convenient user management, extensive app configuration options and many other features tailored to the needs of organizations.
The message API enables you to send and receive Threema messages using your own software.Learn more
The tool for efficient top-down communication via feeds, distribution lists, bots, and centrally managed groups.Learn more