@brie it’s not what you ask for directly, but I use maildirproc to presort my inbox in a Maildir format
I use it ’cuz it’s a sorting method independent of the client, so it works by definition with any MUA.
Dunno if that is helpful, but lepsza lnianka rydz niż nic.

† https://mailprocessing.github.io/mailprocessing/reference.html