: Features an app selector for quick access to other services like Proton Calendar, Proton Drive , Proton Pass, and Proton VPN.

The interface loaded. It was clean, crisp, and reassuringly stark. No ads screaming for his attention. No "smart" algorithms sorting his life into categories he didn't ask for. Just the deep purple header and the lock icon in the address bar—a tiny, silent sentry.

| Use Case | Why Web App Works | |----------|------------------| | Daily desktop email | Full encryption, keyboard shortcuts, PWA install | | Managing multiple Proton accounts | Easy account switching | | Writing encrypted emails to non-Proton users | Password-protected + expiration UI | | Administering business domains | User & key management from browser | | Users with high-security needs | Proton Sentinel, hardware 2FA, Tor access |