The whole concept of Mailbox is built around the gmail labeling system. While I LOVE the way they handle and clean your inbox and basically everything about Mailbox - the fact that it's BUILT ON FUCKING GMAIL LABELS IS FUCKING RETARDED. I happen to use Gmail or emails that are on Google Apps for Business. That's pure luck. I will say that I've opened gmail.com at least once a day since I've been using Mailbox. That's something that never happened with Sparrow. Right now, I'm only using Mailbox on my phone for organizing and Sparrow on my computer for composing emails and getting things done. It's a bit of a ridiculous process - one that should change soon (I hope) since Mailbox has been pushing updates once a week. I have high hopes but do not blame you (or anyone) for hating Mailbox.