On Wednesday 13 February 2019 01:28:53 pm Baron wrote:
> Hi Guys,
>
> I've just noticed that Kmail no longer shows numbers of  unread mail
> in the "Favorite Folders" box.
>
> Running Q4OS 2.6 X64, Kmial 1.9.10 (enterprise 35 0.2010082701168748)

# kmail -v
Qt: 3.5.0
TDE: R14.0.4
KMail: 1.9.10 (enterprise35 0.20100827.1168748)

# cat /etc/os-release
NAME="Ubuntu"
VERSION="14.04.5 LTS, Trusty Tahr"
ID=ubuntu

The "Favorite Folders" box here shows unread mail numbers.  I'm pretty sure 
all my folders are 'maildir' format.

Try closing Kmail and re-starting it??

Hope that helps,
Michael