Welcome to Firefox for Android Add-ons.
Add extra features and styles to make Firefox for Android your own.
CloseReview for Extra Folder Columns by Martin Eichner
Rated 5 out of 5 stars
I liked Extra Folder Columns better than the latest built-in version in Thunderbird. Specifically, I do not want to see how many e-mails are in directories or sub-directories, but only in the folders.
To create your own collections, you must have a Mozilla Add-ons account.