Threema. The Secure Messenger

Threema GmbH

Threema is the world’s best-selling secure messenger; used by more than 12 million people in over 175 countries; developed in Switzerland; and designed with privacy and data protection in mind. Whether chats; calls; or files; everything is end-to-end encrypted; and no data trail is left behind. Instead of a phone number or email address; a randomly generated Threema ID serves as a unique identifier – anonymous and secure. Threema protects what really matters: your privacy. Advantages of Threema: • Text and voice messages; including emoji reactions • End-to-end encrypted voice; video; and group calls • Location sharing • Sending files in all formats (PDF; GIF; MP3; ZIP; and more) • Ability to edit sent messages and delete them for chat partners • Desktop app and web client for convenient chatting on your PC • Group creation and polls • Light or dark mode • No ads; no trackers; no data collection • Identity verification of contacts by scanning their QR code Reliable security: • Open source and regular audits • Servers in Switzerland • Anonymous use possible: no phone number or email address required • Messages are deleted from the server immediately after delivery Do you have any questions or problems? Our FAQ can help: https://threema.com/support Enjoy using Threema!