Proton does not currently offer an official portable version Proton Mail desktop app
Proton Mail Desktop App Portable: The Ultimate Guide to Private Email on the Go
users were limited to web browsers or mobile apps. The release of the official desktop app proton mail desktop app portable
Open Proton Mail in a portable browser (like Brave Portable or Firefox Portable).
Can you achieve the same result?
Yes, using Portable Firefox or Portable Chrome bootstrapped to mail.proton.me. Proton does not currently offer an official portable
The Unofficial Workarounds: Electron Wrappers
As of the current software cycle, Proton does not officially release a "portable" executable (.paf.exe) version of their desktop app. The official desktop clients available on the Proton website are designed to be installed system-wide. They are built on the Electron framework, which typically wraps the web application into a standalone executable but still requires an installation process to place files in system directories (like AppData on Windows). SQLite) to store user data
For users who need offline access and full desktop functionality, combine Proton Mail Bridge with a portable email client like Thunderbird Portable.