kmail continues to show read messages as unread

[John White]

On Friday, August 13, 2021 1:43:33 AM PDT Ianseeks wrote:
> On Thursday, 12 August 2021 19:38:24 BST John White wrote:
> > This morning kmail properly showed 3 or 4 emails received today as unread
> > but improperly showed 30 emails received last month as unread.
> > 
> > Has been happening for months. Quite a bother.
> > 
> > I have heard that it might help if I did the following:
> > 
> > just trash
> > ~/.local/share/akonadi*
> > ~/.local/share/kmail*
> > ~/.config/akonadi*
> > ~/.config/kmail*
> > ~/.cache/akonadi*
> > 
> > But I am afraid this might do permanent damage.  I need to keep the old
> > emails.
> > 
> > Any suggestions?
> 
> You'll need to let everyone know what version of software you are using. I
> had this problem a few years ago when using mysql as the backend. I'm also
> on the latest version of kmail now with postgresql as the back end.

Thanks for the response.  kmail 5.9.3 on Debian buster.
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