Proton Mail Business
Swiss-hosted zero-access encrypted email with the strongest privacy protections
Email EncryptionFrom $8.99/user/monthOpen Source
How we work:This listing is aggregated from Proton Mail Business'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 Proton Mail Business?
Proton Mail Business provides zero-access end-to-end encrypted email hosted in Switzerland under some of the world's strongest privacy laws. Messages are encrypted on-device before reaching Proton's servers, meaning even Proton cannot read your email. For HIPAA-covered entities, Proton signs BAAs on its Business and Enterprise plans. The platform includes a full suite of privacy tools including Proton Calendar, Drive, and VPN.
Best for: Privacy-conscious organizations needing zero-access encryption under Swiss law with optional HIPAA compliance
Pros
- ✓ Strongest privacy protections — zero-access encryption
- ✓ Swiss jurisdiction beyond US and EU reach
- ✓ Open source and independently audited
- ✓ Affordable per-user pricing
- ✓ Complete privacy suite (mail, calendar, drive, VPN)
Cons
- ✗ Non-Proton recipients see messages via secure portal
- ✗ Fewer enterprise admin features than competitors
- ✗ Migration from existing email providers can be complex
- ✗ Limited third-party integrations
Key Features
→Zero-access end-to-end encryption
→Swiss jurisdiction and data residency
→HIPAA-compliant with signed BAA (Business+)
→Open-source and independently audited
→Self-destructing messages
→Encrypted contacts and calendar
→Custom domain support
→Bridge app for Outlook, Thunderbird, Apple Mail
Quick Info
| Pricing | From $8.99/user/month |
| Model | Per-user |
| Founded | 2014 |
| Cloud | Yes |
| Self-Hosted | No |
| Open Source | Yes |
Last updated: Feb 25, 2026
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Certifications
HIPAAGDPRISO 27001