The RSS feed sits on the side of screen or appears on hover. It is like a summary of headlines of what is going on in your inbox. I guess it depends on your use case if you reach inbox zero daily. Unfortunately, I don't go to inbox zero these days as much as I'd like, and have so many emails I am CC'd on or back-and-forth conversations I am monitoring, this way I can know something came back and a short summary of it, without having to go into the inbox to find out what is going on (especially b/c I am not responding, as someone else on the team would be handling it).