SUMMARY Kmail2 randomly redownloads some emails over and over again via POP3 if you want to keep some emails on the server. STEPS TO REPRODUCE 1. Configure a POP3 account keeping the emails from the last, say 30 days on the server 2. Download the emails regularly 3. OBSERVED RESULT After a while, already downloaded emails are downloaded again EXPECTED RESULT Already donwloaded emails should not be downloaded again SOFTWARE/OS VERSIONS kmail2 6.3.3 (24.12.3) Operating System: Fedora Linux 42 KDE Plasma Version: 6.3.4 KDE Frameworks Version: 6.13.0 Qt Version: 6.8.2 Kernel Version: 6.14.2-300.fc42.x86_64 (64-bit) Graphics Platform: Wayland Processors: 8 × Intel® Core™ i5-1035G1 CPU @ 1.00GHz Memory: 15.2 GiB of RAM Graphics Processor: Intel® UHD Graphics ADDITIONAL INFORMATION This started happening about 3/4 months ago, can't remember the exact kmail version at the time. I have 5 email accounts configured the same way, 3 on a dovecot server and the other 2 on a courier server. The problem is random: one day everything's fine, the next day 2 random accounts redonwlonad emails, the next day another account (and only that one) shows the same behaviour. Sometimes it downloads a few emails, other times more than a hundred. In the past I tried configuring one account via IMAP but it didn't even work, the most success I had was that I could see emails in subfolders but not the inbox, so cahging to IMAP is not a solution for me.