I've recently switched back to using Kmail in Plasma / 42.3
However, whenever I start Kmail after a boot I get a screen announcing "The Akonadi Perosnal information Management System is not Running. This application cannot be used without it".
Just under that is a start button. Once entered Kmail works as it should.
Previously when I used Kmail Akonadi would start automatically.
When I stopped using Kmail I uninstalled it. Now I have reinstalled it on the same system and there was no need to reconfigure as all the original config files were still in place... but something seems to have gone wrong with akonadi.
How can I set this up so that akonadi starts on boot / when kmail starts?