In late 2023 and through 2024, Proton finally addressed this gap by releasing a full-fledged . Built using modern Electron technology (the same framework behind apps like Discord, Slack, and Visual Studio Code), this app brings Switzerland’s most famous encrypted email service directly to your taskbar.
App fails to sync offline changes. Fix: Clear the cache (Settings → Offline → Clear cache) and restart. Ensure your system clock is accurate (NTP-synced). protonmail app for windows
proton.me/mail/download
Have you tried the ProtonMail Windows app? Share your experience in the comments below (or securely via Proton Mail, of course). In late 2023 and through 2024, Proton finally
| Metric | Web Version (Chrome) | Windows App | |--------|----------------------|--------------| | RAM idle | ~180MB | ~220MB | | RAM with large mailbox | ~350MB | ~310MB | | CPU background sync | 0-1% | 0-2% | | Launch time (cold) | 2.1s (browser first) | 1.3s | | Search speed (10k emails) | 1.2s | 0.9s | Fix: Clear the cache (Settings → Offline →
Proton has successfully delivered on its promise to bring encrypted email out of the browser and onto the desktop. If you’re already paying for Proton, downloading the Windows app is a no-brainer. For free users, it’s yet another reason to consider upgrading.
High CPU usage during sync. Fix: This usually happens on first sync of a large mailbox (over 20,000 emails). Let it complete; subsequent syncs are incremental and lightweight.