Protonmail App For Windows May 2026

| 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 |

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. protonmail app for windows

proton.me/mail/download

But is it just a browser wrapper, or a genuine upgrade? This article explores every feature, installation step, security nuance, and performance benchmark of the ProtonMail Windows app. The ProtonMail desktop app is a standalone client that allows you to manage your encrypted email inbox without opening a web browser. It is available exclusively for Proton paid subscribers (Mail Plus, Proton Unlimited, or Family plans). Free users must continue using the web client or mobile apps. | Metric | Web Version (Chrome) | Windows