Welcome to Firefox for Android Add-ons.
Add extra features and styles to make Firefox for Android your own.
CloseReview for Manually sort folders by Alan
Rated 5 out of 5 stars
There are numerous comments that the extension doesn't work with the latest version of Thunderbird. However, this fixes it:
Go to Thunderbird>>Tools>>Options>>Advanced>>General>>Config Editor
Scroll down to extensions.tbsortfolders@xulforum.org.accounts
Right-click and select Reset
Repeat for extensions.tbsortfolders@xulforum.org.defaultaccount
Restart Thunderbird
Acknowledgements to arikurumo for finding this
To create your own collections, you must have a Mozilla Add-ons account.