Rated 3 out of 5 stars
This unfortunately works only if the GMail Labs "Hide Unread Counts" is *not* enabled. While this might seem obvious, even with "Hide Unread Counts" enabled, the number of unread messages in the Inbox will *still* display on the Title Bar (even though it no longer displays in the GMail sidebar). Since the data is obviously still available, the issue becomes where the addon is obtaining its data. I hope this can be fixed. Great idea. If it worked with "Hide Unread Counts" enabled, I would give it 5 stars. I give it 3 stars for concept.