I'm on T'bird 128.1.1esr and have been a user for many years. I use T'bird to manage 5 email accounts. In previous versions if there are new emails the Inbox folder turns blue and tells me how many new emails have been received. This is particularly useful to me as with so many email accounts to monitor I have a number of rules that move new emails into folders thus with the target folder colour changing to blue I (1) know how many new emails I have received and (2) I can make sure I find them all. Except that this is no longer working. Sometimes the indication is that there are x new emails yet none appear, at other times there are x new emails but I cannot find them all (assuming they exist in the first place, see my first point) as it seems some folders with a new email are no longer turning blue. I don't think this is a setting issue, it seems to have started with the last one (or maybe, two) Thunderbird updates. Regards Gary Thomas UK