Proton Mail desktop should hide web and give desktop menus

I'm fine with the Proton Mail desktop client being an Electron app, but it still need to use desktop-based interactions. For example, when right clicking on the inbox, I expect to see options to mark all as read etc. - not an Inspect Element menu (that actually works and opens up devtools inside Proton Mail).

And to those that can't cope with 3981 unread emails - I've just imported from Gmail, and a lot of them appeared as unread, which is why I'm now looking for a way to mark all as read.