Tuta Mail

Tuta Mail provides an email client for macOS that integrates encrypted email, calendar, and contact management. All user data is protected with end‑to‑end encryption using post‑quantum cryptographic algorithms, and the service operates without advertising or data collection. The client offers a custom domain address, once and offline access, and a calendar that stores events privately, with push reminders that do not rely on external services.

The application is aimed at individuals and organizations that prioritize privacy and want a unified communication suite without surveillance. Its design emphasizes simplicity and workflow efficiency, allowing users to handle email invitations, appointments, and recurring tasks directly within the app. The service is positioned as a free, stable solution with optional paid tiers for additional resources.