The inbox (or whatever box you are currently viewing) can be shrunk or enlarged, but I do not get the resize cursor for the far left panel. Nor do I see a way to collapse it. Is there something in settings that I am overlooking that would allow me to minimize this panel?
I don't think so
That is a shame, it takes up so much screen real estate. Some up/down arrows within the box currently in view would be great too.