Flat Folder Tree

评分5星，满分5星

由 Gyrocode.com 发表于 Aug. 11, 2017 · 永久链接

I am surprised this hasn't been mentioned before. There is much simpler solution available that no longer requires add-on.

See this post for more details and screenshots:
https://www.gyrocode.com/articles/how-to-hide-gmail-folder-in-mozilla-thunderbird-using-imap/