Thunderbird Community Forum

I NEVER use threads but somehow recent folders I create in my local folder for archiving off the imap cloud now automatically are threaded even though in my selected columns to display the thread option is not activated. It seems that a recent updated added this function to new folders I create. How do I turn it off? Thank you.

I am viewing my emails, and I can see that some emails are not nesting properly. It doesn't happen all the time. I am expecting all emails in the thread to have the same subject. Please see screenshot.