Tuta
Open-source end-to-end encrypted email with zero-access architecture
Email EncryptionFrom $8/user/month (Business)Open Source
How we work:This listing is aggregated from Tuta's official documentation, public pricing pages, community discussions (Reddit, HN, forums), and real user feedback. We do not do hands-on testing. We aggregate and organize what's already out there. Last verified February 2026.
What is Tuta?
Tuta (formerly Tutanota) is an open-source, end-to-end encrypted email provider based in Germany. Every email, contact, and calendar entry is encrypted at rest with zero-access architecture. Tuta uses its own encryption protocols rather than PGP, encrypting subject lines in addition to message bodies. While primarily focused on GDPR compliance and personal privacy, Tuta's business plans offer custom domains, team management, and whitelabel options.
Best for: Privacy-focused teams wanting open-source, end-to-end encrypted email at an affordable price under EU jurisdiction
Pros
- ✓ Fully open-source codebase
- ✓ Encrypts subject lines — not just bodies
- ✓ Affordable pricing for small teams
- ✓ German jurisdiction with strong privacy laws
- ✓ No tracking or advertising
Cons
- ✗ No HIPAA BAA available
- ✗ Custom encryption protocol (not PGP/S/MIME)
- ✗ Limited enterprise admin features
- ✗ Fewer integrations than established platforms
- ✗ No bridge app for third-party mail clients
Key Features
→End-to-end encryption for all emails
→Encrypted subject lines (unique feature)
→Zero-access encryption architecture
→Open source client and server code
→Encrypted contacts and calendar
→Custom domain support
→Two-factor authentication
→Anonymous sign-up option
Quick Info
| Pricing | From $8/user/month (Business) |
| Model | Per-user |
| Founded | 2011 |
| Cloud | Yes |
| Self-Hosted | No |
| Open Source | Yes |
Last updated: Feb 25, 2026
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Certifications
GDPRISO 27001