Rated 5 out of 5 stars

le Michael Penner ar Beal. 14, 2015 · buan-nasc

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!