Request: Bring back the "all messages" folder

Checklist

• I have used the search function to see if someone else has already submitted the same feature request.
• I will describe the problem with as much detail as possible.
• This issue only contains a request for one single feature, not multiple (related) features.

App version

6.400

Problem you are trying to solve

Hi.

First and foremost: I have been using K-9 Mail for many years now. And I want to thank all of you for your work. It is a great software!

Second: Until version 5.600 (before the great redesign) there was a folder next to unified inbox called "all messages" which showed exactly the stated. I was and am using it most of the time. And I have been missing it ever since…
So please consider to bring this feature back...!

Thanx.
Son-iX.

Suggested solution

Add a folder next to unified inbox called "All messages" which shows exactly the stated.

Maybe also an option to turn it on/off within General settings > Display > Account list: "Show All messages folder ☑︎"

Screenshots / Drawings / Technical details

You maybe remember how it used to be:

Proposal for implementation in UI:

Start by locating the Android account-list and unified-inbox entry points, then read how folders are selected and displayed. Check the current General > Display > Account list settings before deciding where the All messages option belongs. Done means an All messages folder appears beside the unified inbox, shows the intended messages, and can be controlled as proposed.