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)
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
Pricing: From $8.99/user/month
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
Cons
- More complex to configure than simpler solutions
- Primarily Microsoft-focused ecosystem
- Pricing not transparent
- KnowBe4 acquisition may shift product direction
Pricing: Custom pricing