[DarwinMailApp]

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.

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.

I actually run a similar product called DarwinMail [1], which was built shortly after GoogleInbox announced it would shut down in 2018.

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.

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.

[1] https://www.darwinmail.app