Version: (using KDE 4.2.2) OS: Linux Installed from: Mandriva RPMs After upgrade from Mandriva 2009.0 to the most recent 2009.1 the first run of kmail refreshed the cache and has shown correctly all disconnected imap folders apart from inbox where it has shown nothing. More critically, it has removed all the messages present in INBOX on the server. After I have restored the messages from the backup, I tried to rebuild index and the whole cache, but the messages were still not shown and eventually removed again from the server. Finally, I have done the following experiment: I have restored 1 email in the server inbox, accessed it from another Mandriva 2007.1 box, then copied INBOX and .INBOX.* directories from .kde/share/apps/kmail/dimap/.*.directory/ to .kde4 on the 2009.1 machine. Then kmail has shown this very message in inbox. But after I have added new messages to the server, inbox (despite showing the progress of updating the cache) still shows just one message. Deleting it in kmail resulted in ALL messages on the server to be deleted. Maybe this is related to http://bugs.kde.org/show_bug.cgi?id=164679 Reported also to Mandriva: https://qa.mandriva.com/show_bug.cgi?id=50646 where I have also put contents of the original INBOX directory structure in the cache and, for comparison, the INBOX structure copied from 2007.1 box
Reproduceably loosing mails sounds very very bad. But I was not able to find any other report of what you experienced. So it must have been some special situation. Do you have any update for this issue? Is there still something that can be done in KDE 4.4+?
Thank you for taking the time to file a bug report. KMail2 was released in 2011, and the entire code base went through significant changes. We are currently in the process of porting to Qt5 and KF5. It is unlikely that these bugs are still valid in KMail2. We welcome you to try out KMail 2 with the KDE 4.14 release and give your feedback.