Tuta

Tuta: End-to-end encrypted email and calendar

Tuta is a digital communication service provider offering email, calendar, and contacts with end-to-end encryption. The company presents itself as the first end-to-end encrypted email service that encrypts the entire mailbox, and uses post-quantum cryptography to protect data. Its approach focuses on privacy, with no ads or tracking, and it runs entirely on renewable energy.

Main products and services

Tuta's catalog includes three main products:

• Tuta Mail: end-to-end encrypted email, with apps for Android, iOS, Windows, macOS, Linux, and web browser. It supports custom email addresses with your own domain and an unlimited number of aliases.
• Tuta Calendar: zero-knowledge encrypted calendar that ensures events remain private. It integrates with the email app to manage invitations and reminders without relying on third-party notification services like Google Push.
• Tuta Drive: encrypted cloud storage service (mentioned in the product menu, though its features are not detailed in the text).

Focus on security and privacy

The company applies end-to-end encryption with cryptography resistant to quantum computing attacks. Its zero-knowledge architecture is combined with compliance with the European Union's General Data Protection Regulation (GDPR). All Tuta clients are open source and can be audited by security experts. The company states that it does not display ads or perform personalized tracking, and collects the minimum amount of data possible.

Sustainability and social commitment

Tuta runs exclusively on renewable energy. The company states it puts ethics before profits and supports non-profit organizations, freedom of expression, and strong privacy laws. It offers discounts for non-profit organizations and schools.

For businesses and organizations

Tuta's paid version is designed for businesses and organizations of all sizes. According to the information provided, more than 10,000 businesses, including major financial institutions and human rights organizations, use Tuta to protect their professional emails and calendars. Data is stored encrypted in Germany, under strict data protection laws. The company highlights cost efficiency, high availability, flexibility, and automatic backups without compromising security or digital sovereignty.

Specific audiences

In addition to personal and business use, Tuta targets groups requiring special protection: journalists, activists, and medical professionals. For the healthcare sector, it offers GDPR compliance and end-to-end encryption. For journalists, it protects communications and sources. For activists, it prioritizes privacy, anonymity, and security.

History and team

Tuta was founded in 2011 by Arne and Matthias, before the Snowden revelations, with the goal of providing a safe space free from surveillance and discrimination. It was initially called Tutanota and later renamed Tuta. The company remains committed to transparency and open disclosure of bugs. Its team develops the product and maintains ties with privacy and open-source communities.

Availability and plans

Tuta Mail is offered on a permanent free plan, with no ads, and paid plans with additional benefits such as custom domain and more storage. Apps are available for Android (including APK download from GitHub), iOS, Linux, Windows, macOS, and web browser. The company also offers a business-specific version.