Inbox : A new Email App From Google Google has just launched an app called Inbox that allows you to make email more useful and preview next-gen capabilities. The overwhelming problem with Gmail is that there's too much email to wade through and it's become a chore and productivity killer, the new app makes you to get your messages faster rather than sorting through a bunch of emails. Google Inbox is available as an app for the Web, Apple's iOS and Google's own Android operating system. For now, using Inbox is an invitation-only option; Gmail users can request access by sending an email to inbox@google.com .