<p>For many people, staying on top of email has become something of an ordeal.</p><p>It remains essential, of course, both for personal and work-related communications, but increasingly, our inboxes are overrun by retail messages, promotional items, newsletters and social media updates.</p><p>This problem is even worse and more complicated on mobile devices, with their tiny pop-up keyboards and limited screen space.</p><p>A number of startups have been working on this problem, one of which came up with the iOS app Mailbox, which at present works only with Gmail accounts.</p><p><a href="http://blogs.kqed.org/newsfix/2013/05/31/98352/">Keep reading...</a></p>