OK, this is just a shot in the dark. It may accomplish nothing. Try setting the default for future folders to be unthreaded by going to config editor and

 change default that applies to NEW folders you set up:
       mailnews.default_view_flags      0=unthreaded  

The config editor is at settings>general and at lower right. The default setting is 1, and I'm suggesting to change it to 2.

Hi David, thanks for getting back to me so soon. I changed the setting from "1" to "2" as you suggested, then just to make sure, logged all the way out then back in. Sadly, I still have the 18/11/22 in with what are now yesterdays e-mails (21/11/22) + the "boxed responses". It's really odd as, as far as I can make out, it just started happening.... Or, maybe, I've just noticed it..... LOL!

Nothings changed - I've not been asked to approve config changes (I run Linux Mint) so it's a real mystery. I did note that, if you look bottom right on the screenshot, it says "2 selected"; the number varies in those e-mails affected depending on how many "boxed responses" there are. It just makes it hard to locate specific, older, e-mails as they seem swept up into "selected threads"! But "threads" is not selected on that drop-down!

Cheers, Chris

Hello @chris_morshead

the '>' symbol before the title means indeed that what you are seeing here is the 'head' of a thread. What do you mean by 'drop-down' with this threads selection ? what do you see in the view menu (see screenshot)

Hi gp, cheers for this. I think we are on to something. The thread thing I found was in a small square dropdown to the right of Date in the header bar (can be seen in my screenshot) so I assumed that was it and, if I made sure it was de-selected, it would work. I didn't see the one you have pointed out as I assumed the one I had found on the right was the only "thread" place!!!! I did wonder as it didn't make to much sense.

Having looked at the area you suggested, the on-line Help has now made complete sense and I have just changed the "View" "Sort by" to "Unthreaded"! Bingo!!!!!!!! All sorted. Thanks to you and Dave and sorry for being such a Muppet! I'm still mystified why it changed. I did read Ver 102 made threading standard so maybe that was it. Anyway, all good to go. As I say, I've used T/B for several years now so I was puzzled. But all good now! Thanks again to you both!

Cheers, Chris

I'm glad all worked okay. In my suggestion, I meant to say change to zero, not 2. 0 is the setting for unthreaded. My typing error, as I had it correct on prior line.

Thanks david.

No thanks to mozilla. Please leave my settings alone.