From the Mailbox blog:
[As] we deepened our focus on collaboration, we realized there’s only so much an email app can do to fundamentally fix email. We’ve come to believe that the best way for us to improve people’s productivity going forward is to streamline the workflows that generate so much email in the first place.Surprise, surprise?Another great email app goes the way of the dodo.
I’ve been on the TestFlight for Airmail’s iPhone app for a few months, and sadly, I don’t think it will be anywhere near as great as Mailbox.
Admittedly, developing email clients is hard work. Because email existed before web standards, there are so many distinct protocols to support—IMAP, POP (yes, still), Gmail—the list goes on.
So it’s not like writing an email app is as easy as, say, a notes app.
Still, I can’t help feel that the App Store marketplace is wide open for a simple yet powerful email client.