https://bugs.kde.org/show_bug.cgi?id=392653
--- Comment #1 from wincak <win...@seznam.cz> --- After I reported this issue it fixed itself eventually and sending email started working again without my direct intervention. For some time I was unable to reproduce the issue until it reappeared after recent software upgrade and disappeared again soon. I believe the upgrade process somehow breaks communication between KMail and Akonadi components and reboot fixes it. -- You are receiving this mail because: You are watching all bug changes.