I'm now using Thunderbird 78.6. When I reply to an email, more often than not I have to refer to other emails - from the same person, on the same subject, etc. So I want read and unread emails to be available (i.e. listed) all the time, as they used to be, without any effort from me. Now, I have to keep clicking on Unread. I can't find any way of asking for unread emails to be available all the time. Also, when I search for emails, the list can be in either of two formats, the original with one line per email, and another one that gives more information but takes several lines, so fewer emails are on the screen at once. I can't find any way of saying I always want the first format.