https://docs.framasoft.org/fr/agenda/Synchronisation/kde.html
KOrganizer ยท Documentation Framasoft
korganizerdocumentationframasoft
https://forums.mauilinux.org/showthread.php?tid=24641
Missing Menu items for Kmail Korganizer
menu itemsmissingkmailkorganizer
https://apps.kde.org/korganizer/
KOrganizer - KDE Applications
KOrganizer is a calendar and scheduling application
korganizerkdeapplications
https://forums.mauilinux.org/showthread.php?tid=24278&pid=41709&mode=threaded
[solved] Korganizer does not notice any deleted dates
does notsolvedkorganizernoticedeleted