Every time I shut down my system, I get a crash dialog that says "Kmail closed unexpectedly". Everything works just fine, but it seems like kmail isn't quitting when it should so the OS is just aggressively killing it.
Same trouble here with KMail 5.5.3 Plasma 5.10.0 FW 5.36.0 QT 5.9.1 on KDE Neon 5.10.4 Due to the shutdown-process, I'm not able to generate debug-information.
May be the same issues like in Bug 378315
Let's assume it is. Without a backtrace, we cannot tell more. *** This bug has been marked as a duplicate of bug 378315 ***
How can I obtain a backtrace in this situation?
It is possible to disable DrKonqi and enable the generation of core files instead. Those can be evaluated after a reboot. Please ask in a forum of your distribution for help.