android app: expand and collapse folders in the folder list

[4WoofGrrrr]

Like many others, I have been using Thunderbird on my desktop for many years. More than 20.

I tried the Android version (I previously tried its K-9 precursor) and I am quite disappointed.

There is one missing feature that is an absolute deal-breaker for me: You cannot expand and/or collapse
folders in the folders list. Every one of my folders is displayed in one very long list.

[Jon]

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