Are you perhaps using an IMAP server? I have run a search on the KDE bugtracker and found the following bug:
<https://bugs.kde.org/show_bug.cgi?id=95064> - Duplicates messages in imap folder after filtering
It is related to an old version of KMail, but it seems (at least from the last comments) that it occurs on some newer versions as well.
If so, could you please tell me so I can link this bug report to the one on the KDE bugtracker?
(Reassigned the bug to the right package.)
Are you perhaps using an IMAP server? I have run a search on the KDE bugtracker and found the following bug: /bugs.kde. org/show_ bug.cgi? id=95064> - Duplicates messages in imap folder after filtering
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It is related to an old version of KMail, but it seems (at least from the last comments) that it occurs on some newer versions as well.
If so, could you please tell me so I can link this bug report to the one on the KDE bugtracker?