Rated 3 out of 5 stars

My question is how this is different than the 'Star' feature that comes built-in to Thunderbird. I basically use those like bookmarks and I think that's the intention, since you can flag an email with a star and then see all those in the 'Starred' folder. I guess, with bookmarks, you get the added bonus of categorization? But, I would prefer to use the tags since those are useful throughout the application.