After today’s update (2023-07-27), the “Unified Folders” in my Thunderbird had no subfolders. I have 46 email accounts installed into T’bird, so normallly, each of “Inbox”, “Drafts”, “Templates”, “Sent”, “Archives”, “Junk”, “Trash” have 46 subfolders each, but they were all gone.
However, with a few minutes of googling I found the solution. In case anyone else has this problem after the update, here’s how to fix it:
- Exit T’bird.
- Go into your T’bird profile folder and Make a new subfolder called “cut-from-mail”.
- Go into “Mail”, find the “smart mailboxes” folder, cut it from “Mail”, and dump it into “cut-from-mail”.
- Restart T’bird.
It’s that simple: T’bird will quickly rebuild the “smart mailboxes” and nothing will be lost: not accounts, not emails, not settings.
After doing this fix, all of the subfolders of my “Inbox”, “Sent”, etc, are now back and showing dozens of new incoming emails.
