Our goal is to redesign email, not an email client. I sounds far-fetched, but there's a lot about that can be improved. From the basic UX to the way we communicate and share media via email. It takes many iterations and a long process, but there is a lot of room for innovation in email. In a long run, it will be much much more powerful then Gmail or Outlook, those are almost the same experiences we had 40 years ago.