For a POP3 account, I enabled "Leave fetched messages on server" and "number of days"=30, but old meesages are being downloaded over and over again. They end up as new messages in the incoming folder, duplicating the messages that are already there. Doesn't matter if I specify number of days, megabytes, or number of messages to keep. It seems as if kmail/akonadi don't remember which messages already have been downloaded. kmail 17.11.90 openLeap 42.3
I'm using IMAP now, so I can't figure out whether this bug is still present. Marking it as RESOLVED.