In eM Client 9 I can see how many emails I have in search folders - it was located in the middle of top screen. Now there is search and number of emails are above list, but not for search folders - I can’t find anywhere these informations.
You will need to disable the Categories bar in any folder that doesn’t show this. To do that right-click next to the categories tabs and choose Category Tabs > Hide Categories bar.
You will find other settings for that in Menu > Settings > Mail > Categories:
When I hide category bar, I still don’t see how many emails I have in search folders.
EDIT: Now I see them, but yesterday I saw no counters.