It would be great if deep linking was enabled for the desktop MacOS Meet app. As of now, if you open a link to a meeting from Proton Mail or Calendar it opens the link in the default browser (in my case, Safari). It would be helpful if, like other meeting apps, Safari would then pop up a dialog saying "Open in Proton Meet?"

This is done via deeplinking, the documentation for this is here https://developer.apple.com/documentation/xcode/allowing-apps-and-websites-to-link-to-your-content

I do not have the mobile app so I'm not sure if it's implemented there yet, but it's the same techniques for iOS.