The quick search bar above the message list was indeed a useful tool. When I now enter a search string, e.g. from the sender, it does not find anything, although the search string is present.... Reproducible: Always Steps to Reproduce: 1. enter search string in search bar 2. no mail is displayed 3. vary between search options (Full message, from, ...): No change
This may be related to the fact that the folder I'm filtering on is a subfolder of the lokal kmail inbox folder. Filtering in the inbox of an IMAP account works!
I fixed quick search for searching email even if baloo is disable.