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TancaComentari del Flat Folder Tree per Gyrocode.com
Rated 5 out of 5 stars
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/
Per crear les vostres pròpies col·leccions, heu de tenir un compte al Mozilla Add-ons.