Features
End-to-end encryption for emails
Zero-access encryption (Proton cannot read data)
Encrypted calendar (Proton Calendar)
Custom email domains (paid plans)
Email aliases protection (hide-my-email)
Secure file sharing via Proton Drive
Password-protected emails to non-Proton users
Open source code (transparency)
Swiss privacy laws jurisdiction
Anonymous sign-up (no personal info for free)
Proton Sentinel account protection
Easy Switch import from Gmail/Outlook
Proton Bridge (IMAP/SMTP for desktop clients)
Lumo AI assistant (confidential AI, version 2.0)
Behavioral AI detection of phishing and BEC
Account takeover protection
Automated incident response
Malicious inbox remediation
API-based integration with M365 and Google Workspace
Threat intelligence and reporting
AI-driven identity and context validation
Phishing simulation integration
Malicious URL and attachment detection
Outbound email protection
User-reported phishing analysis
Executive impersonation protection
