Welcome to Firefox for Android Add-ons.
Add extra features and styles to make Firefox for Android your own.
CloseReview for Folder Levels by Michael Penner
Rated 5 out of 5 stars
Running Thunderbird 31.6.0 -
Allows me to view all unread mail across all e-mail folders (my e-mails are heavily filtered into folders automatically) in a single viewing pane, and that's just for starters. What an amazing new dimension this adds to Thunderbird!
To create your own collections, you must have a Mozilla Add-ons account.