This leaves no trace on the host PC and can be carried anywhere.
A portable app is a software application that can be run from a portable storage device, such as a USB drive, without requiring installation on the host computer. This allows you to carry your apps and data with you, using them on any computer without leaving a footprint. proton mail desktop app portable
If you have administrative rights on your own PC, you can use tools like PortableApps.com or Simple Software Packaging to "portablize" the official app, though this requires some technical heavy lifting. 2. The Best Alternative: A Portable Browser Setup This leaves no trace on the host PC
This is the easiest way to get a "desktop-like" experience without a standard installation. It works on any computer with a Chromium-based browser (Chrome, Brave, Edge) and doesn't require administrator rights. If you have administrative rights on your own
Because the browser itself is portable, all your session data and the "app" interface stay within the portable browser's folder on your USB drive. Security Best Practices for Portable Users