Version: 4.4.2 (using KDE 4.4.2) OS: Linux Installed from: Ubuntu Packages I have several disconnected IMAP accounts and running KMail in Kontact. In order that I do not have to empty each wastebin seperately I altered my toolbar to include the "Empty All Wastebins" action/button to it. When I press it, locally all Wastebins are emptied. However this seems not to be pushed to the server. After the next disconnected IMAP sync in KMail, it downloads all emails again and they reappear in the according wastebins.
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.