Currently recursive quick search adds a thin line loupe on the folders containing messages matching search criteria. If the folder has no subfolders (so that it can also show a "+" after folder name) that seems a vague visual hint, especially when using breeze theme.
It would be good to have some more prominent visual style for folders containing found messages (e.g. colored background of the line containing the folder name, maybe yellow?)
I'd second this request. I've often thought a different colour or bold text would make it easier to spot matches than a small magnifying glass icon.
> or bold text
Bold is currently the style for unread, so if it is used for search matches too it would be ambiguous and cause additional confusion.
Created attachment 1922 [details]
Here is an example of what it may look like (suppose Inbox and Sent contain matches)