I really think the preview video when you sign(ed) up was pretty clear what this app does. Inbox zero is not a concept they created, the app is just centered around that concept. If that isn't something you want, then yes, don't use the app. But complaining about it doesn't make sense, that is what it does, the core functionality is to change your workflow around your email. Things in your inbox need to be address now, or pushed off until you can address them, this app helps with that. If I am at work, and something personal comes in, I say "tell me this evening". If I know the email isn't something I can deal with until this weekend, boom, it gets sent to the weekend. I can glance down at my phone and instantly know if there is something I need to be addressing right now. Is it a complete change in how I handle my email? Sure, is it a change for the better? Absolutely.