Tuta Mail

Tuta Mail, formerly known as Tutanota, is a German-based secure email service provider that emphasizes privacy and end-to-end encryption. Launched in 2011 by Tutao GmbH, the service has grown to over 10 million users as of June 2023. Tuta Mail offers a free tier with 1 GB of storage and paid plans with additional features like custom domains and increased storage. In March 2024, Tuta Mail introduced TutaCrypt, a post-quantum encryption protocol combining traditional encryption methods with quantum-resistant algorithms to secure communications against future threats. The company operates on a 'zero-knowledge' principle, ensuring that even they cannot access user data, and adheres to the General Data Protection Regulation (GDPR) of the European Union. Tuta Mail is accessible via web browsers and dedicated mobile apps for iOS and Android, providing a user-friendly interface for secure email communication.