A better website icon for use as a brave web-app
Protonmail doesn't offer a native app for MacOS or windows, however the brave browser allows you to create a web-app for it that treats it as though it is a different app with an icon in the dock/start menu/taskbar. The existing icon for these apps is being pulled from the browser address bar/website icon and has ugly square edged. Could you please update this so it matches the style of the iOS icons. Brave web-apps also allow you create similar icons for proton drive and proton calendar.

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Chris Radford commented
https://www.techrepublic.com/article/how-to-create-web-apps-for-the-brave-browser/
^ This article explains how users can manually create web-apps in a short number of clicks, but developers can also create pop-ups for their sites that do it for the user with their consent, saving them time. I only found out about this feature because soundcloud offered me this choice.