While initially restricted to "Visionary" tier users, the app is now available to all tiers. However, some advanced features may still require a paid plan, such as Proton Mail Plus at approximately $3.99/month .
While the web app is highly secure, Proton highlights several security and productivity reasons for using the dedicated desktop client: proton desktop
Features like desktop notifications and automatic theme syncing (light/dark mode) are standard . While initially restricted to "Visionary" tier users, the
Inherits all web-app protections, including Zero-Access encryption , end-to-end encryption (E2EE), and Proton Sentinel for high-risk accounts. Proton Drive: Secure File Syncing Proton Drive for
While primarily for paid tiers (Mail Plus, Unlimited, etc.), free users can access a 14-day free trial to test the desktop experience. 2. Proton Drive: Secure File Syncing Proton Drive for Windows - Facebook
Supports end-to-end encryption for all communications. Users can switch between their inbox and calendar seamlessly within a single interface .