This appears to be a longstanding problem and boy is it irritating. It's easily fixed with "pkill akonadi_imap" and less easily fixed with "akonadictl restart". The problem with the former is this: org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_imap_resource' crashed! 1 restarts left. Can someone tell me how to increase the # restarts to an arbitrary high number so I can just make a cron job to "pkill akonadi_imap" every hour? Pending an actual fix to this problem this would make it easier to live with!
I can confirm it, it seems akonadi (or part of it) dies regularly. #345979 is probably related.
Thank you for reporting this crash in KDE software. As it has been a while since this issue was reported, can we please ask you to see if you can reproduce the crash with a recent software version? If you can reproduce the issue, please change the status to "CONFIRMED" when replying. Thank you!
All good at the moment v 5.19.3 (21.12.3) so I'm changing to resolved/fixed