"Alll mail" tab for quickly checking emails on all folders.

[FerranAD]

Introducing an "All Mail" section to Tutanota, similar to Gmail's feature, would provide users with a more efficient way to check all their incoming emails in one place. While it is useful to have inbox rules segregate incoming mail into different folders, I sometimes feel the need to quickly check all folders at the same time instead of going one by one.