, the official desktop app is not portable . When you install it:
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Always activate Two-Factor Authentication (2FA) on your Proton account. Even if someone steals your portable drive and extracts your session cookies, they will be blocked without your 2FA token. proton mail desktop app portable
A portable app runs from a USB drive or folder without installing it on the computer.
Some users try to grab the Proton Mail desktop app’s installation folder (from %LOCALAPPDATA%\Programs\proton-mail-desktop ) and copy it to a USB drive. Then they use a tool like to redirect %APPDATA% to the USB. , the official desktop app is not portable
If you truly need a zero-footprint solution that you can carry on a USB drive without leaving trace files on the host computer, you can run Proton's web app through a portable browser.
As of 2025, there is no official Proton Mail portable desktop app. If you share with third parties, their policies apply
Locate the application folder in AppData\Local\Programs\protonmail-desktop .
ProtonMail does not officially provide a portable version of its desktop app. However, you can use the following methods to create a portable version:
: Run the official Proton Mail Bridge on your main PC. Step 4 : Copy the special IMAP settings from the Bridge app. Step 5 : Put those settings into your Portable Thunderbird.
If your goal is to use Proton Mail without a permanent installation, here are the official and community-supported alternatives: 1. The Official "Portable" Method: Web App Shortcuts While not a standalone