Bring back the Date headers.
You had the emails sorted by "Today" "Yesterday" then days of the week, then "Last Month" etc. I would like that brought back made emails nicer to be sorted and read instead of the mess you've made now. And now, I don't want three separate inboxes sorted on your sorting algorithm. I have folders for sorting my emails.
The date headers made the box nice to look at and easier to do a search for emails if you could remember when but not the good keywords for the search to locate.
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