Tutanota
FreemiumSecure email service with end-to-end encryption.
What does this tool do?
Tuta (formerly Tutanota) is a privacy-focused secure email service that provides end-to-end encryption for emails, calendars, and contacts. Unlike traditional email providers, Tuta encrypts all data by default, using post-quantum cryptography that protects against both current and future quantum computer threats. The service is built with a zero-knowledge architecture, meaning even Tuta cannot access user data, and it operates with a strong commitment to user privacy, using renewable energy and maintaining an open-source approach.
AI analysis from Feb 18, 2026
Key Features
- Quantum-resistant cryptography
- Secure calendar with encrypted event management
- Custom domain email support
- Two-factor authentication
- No tracking or personalized ads
- Encrypted contacts management
- Mobile and desktop applications
Use Cases
- 1Journalists communicating sensitive information
- 2Privacy-conscious professionals protecting business communications
- 3Activists and human rights workers needing secure messaging
- 4Individuals concerned about data tracking and surveillance
- 5Remote teams requiring confidential email communication
Pros & Cons
Advantages
- Full end-to-end encryption by default
- Open-source clients that can be independently audited
- Cross-platform support (Android, iOS, Windows, macOS, Linux)
- Built with strong German privacy regulations compliance
Limitations
- Limited storage compared to mainstream email providers
- Potential compatibility issues with non-encrypted email recipients
- Smaller ecosystem of integrations compared to Google or Microsoft
- Learning curve for users not familiar with encrypted communication
Pricing Details
Free tier available with basic features. Paid plans start at €1/month, offering additional storage and custom domain capabilities.
Who is this for?
Privacy-focused individuals, journalists, activists, small to medium businesses prioritizing data security, and professionals in sensitive industries requiring confidential communication