This is quite a leap forward in organising emails. I believe emails need to be organised into concise groups in order for you to become your most productive.<p>One thing I would suggest is to allow the organisation of labels according to when the last email was received. Today, Yesterday, This week, Last week, This month, Last month etc.<p>I actually run a similar product called DarwinMail [1], which was built shortly after GoogleInbox announced it would shut down in 2018.<p>We have supported bundles (labels in Fastmail) for about 12 months now. Through consistent iterative updates (thanks to feedback from our users) we have made huge progress.<p>Apart from the core (built-in) bundles: travel, finance, purchases, forums, promotions, social, updates you can also create a bundle from any label you wish.<p>[1] <a href="https://www.darwinmail.app" rel="nofollow">https://www.darwinmail.app</a>