Me too. Same use case.
Yeah, don’t listen to the users. Just tell them they don’t really want what they are telling you they want. Surefire recipe for a successful app. Why have a forum when nobody listens?
unfortunately even K-9 Mail app v.6.000 has the same bug: local folders keep growing without considering the “local folder size”. Scenario: POP3 account, local folder size=1000, don’t delete messages on server (on POP server all deleting stuff is done from other desktop mail client); the result is that mobile local folder keeps growing, at the moment I have more than 5000 messages.
As stated before, in previous old stable versions up to 5.600 , same settings, the local folder size worked as expected, since upgrade to 5.8xx local folder size started to grow.
I’m not an android developer but I took a look to the source code, but where is the function which removes old messages from local store to keep the total messages below the “local folder size” value?