The newsletter feature is awesome but it is missing a core sorting functionality which is sorting by the number of emails not currently deleted - regardless of read/unread status. I want to sort so that I can clean up my inbox with the most bang for buck, and all the ones that have nothing "unhandled" will naturally fall to the bottom.

As of the time of writing this we have:

Least Read
Most Read
Most Requent
A to Z
Recently Read
Recently Received

I need just Count (descending) to use the feature the way I want - as a to do list to handle cleaning up my inbox by the worst offenders first.