This may help: In config editor, change mailnews.default_view_flags to 0 to turn off threads.

The other approach is to set view>sort by>unthreaded.

And.....

How to get to config editor: https://support.mozilla.org/en-US/kb/config-editor

Tools>settings>General and scroll to bottom right where the button is.

In config editor, change mailnews.default_view_flags to 0 to turn off threads.

The problem is that the availability of threading still exists via shortcut keys and this fix does not disable that.

So the people I work with are constantly calling me over because "all my emails are not showing".

@david WTF wouldn't you just say this: "The other approach is to set view>sort by>unthreaded." first and then add this: "In config editor, change mailnews.default_view_flags to 0 to turn off threads." secondary, if at all??

The application already has the ability to do it in a couple clicks. There is NO NEED for anyone to mess around with config files!

Except for maybe this reason:

When you have a threaded conversation, for some reason, the oldest email shows up first, WHY, I have no idea? I guess maybe they thought it would be easier to read a thread that way...here's a solution for that. Make the thread reverseable, just like you can click on the date to make the oldest emails first, you should be able to make a thread reverseable. I for one, don't like to have to scroll down a long thread to read the newest reply in a thread!!!

@olysback Because of the possibility of it being turned back on without your knowledge and suddenly you appear to be missing a large chunk of your emails.

Disabled means I cannot turn it on by accident and nothing else can turn it on.

102.7.0 cannot find the "veiw" nor is the button in the Tools/settings/general. Search turns up "nothing" when terms for *thread* are used. Help.