End-to-end encrypted exchange of messages, calls, and files for businesses, military, authorities, and individuals – GDPR-compliant and developed in Switzerland.
More than 8,000 organizations and over 12 million people worldwide trust Threema for secure communication.
Optimize your corporate communication with Threema Work. In the intuitive management cockpit, you can configure all user permissions settings centrally. Your teams work GDPR-compliant with all the features of modern messengers – from structured group chats to encrypted voice and video calls for efficient collaboration without privacy risks.
Rely on the highest security standards with Threema OnPrem. Operate the messenger on your own infrastructure and maintain full control over your data. Protect your company against industrial espionage and cyberattacks through a closed communication environment. Tailored to security-critical companies and organizations with strict compliance requirements.
Protect your private conversations from data collection and surveillance. With Threema Private, you communicate securely and, if desired, anonymously – without providing a phone number or email address. Thanks to end-to-end encryption, chats, calls, and files remain truly confidential.
In times of data leaks and growing cyber threats, trustworthy communication is crucial. Conventional messengers often compromise your data and compliance requirements. Threema offers a secure alternative without compromise.
All messages, calls, and files are protected with strong cryptography based on open-source encryption technology. Perfect Forward Secrecy prevents retrospective decryption even in the event of key compromise – for reliable protection of confidential communication.
Thanks to the zero-knowledge architecture, only the intended recipients can read your messages – neither third parties nor Threema itself have access to the content. Your communication remains exactly where it belongs: between you and your chat partner.
Unlike most other messengers, Threema does not require a phone number or email address. Your unique Threema ID enables confidential communication without revealing your identity or personal network.
Threema reduces metadata to the technical minimum. Messages disappear from our servers after delivery, and contact lists remain on your device. This way, you leave hardly any digital traces and effectively protect your digital identity.
As a Swiss company, we develop exclusively in our own country and operate redundant server infrastructure in Switzerland. Benefit from strong Swiss data protection standards and robust operational security.
Threema meets all data protection requirements and goes significantly beyond minimum standards. For companies, this means documented legal certainty and protection against costly compliance violations in digital communication.
Trust through transparency: Our open source code and regular external security audits demonstrate our high standards. With reproducible builds, you can verify the integrity of the installed apps yourself.
Threema does not sell user data but is built on a clear business model. No advertising, no tracking, no profiling – just reliable, uninterrupted communication. Your digital exchange remains private – today and in the future.
Top executives and security experts rate cybercrime as the greatest current threat to companies worldwide. The threat landscape has intensified in 2024 and 2025, with new, sophisticated attack methods and increasing financial damages.
In the second half of 2024, over 1,000 cyberattacks per week per company were recorded – a 30% increase compared to the previous year (Source: Check Point Research). Particularly at risk: the communications industry and critical infrastructures.
Each data breach costs companies an average of USD 4.9 million today (Source: IBM). The global total damage could reach the 10-trillion mark by 2025.
In 2023 and 2024 alone, the EU imposed over 4.5 billion euros in fines – including 1.3 billion euros for Meta (Source: Reuters). Companies risk up to 4% of their global revenue for violations.
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 impresses with the highest security standards, intuitive operation, and reliable system stability.
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Try Threema Work for 30 days with 30 users – no payment details required, no automatic renewal!
