Proton UI design & app screens

Proton offers a suite of privacy-focused products including encrypted email, VPN, calendar, drive, and password management. It serves privacy-conscious individuals and organizations wanting secure alternatives to mainstream tools.

The web interfaces share a consistent, trustworthy design system with the brand's purple accents, clear navigation between products, and security-forward messaging. Notable patterns include the Mail inbox layout, account and subscription management, and unified onboarding that signals encryption and privacy through restrained, professional UI.