Proton Mail Business vs Egress
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.
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)
Considerations
- 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
Pricing: Free and open source; paid tiers on the vendor site.
Egress
Egress provides intelligent email security that combines adaptive encryption with AI-powered risk detection. Rather than applying blanket encryption rules, Egress analyzes each email's content, recipients, and context to dynamically determine the right level of protection. From automatic TLS to full end-to-end encryption. Now part of KnowBe4, Egress signs BAAs for HIPAA compliance and is widely used in healthcare, legal, and financial services.
Pros
- Intelligent risk-based encryption reduces over-encryption
- Prevents misdirected emails before they send
- Strong Outlook and Microsoft 365 integration
- Reduces user friction with adaptive policies
- Comprehensive compliance reporting
Considerations
- More complex to configure than simpler solutions
- Primarily Microsoft-focused ecosystem
- Pricing not transparent
- KnowBe4 acquisition may shift product direction
Pricing: Custom pricing