Bewertet mit 4 von 5 Sternen

Will this useful extension work with Thunderbird 3.* in future?

Diese Bewertung wurde für eine vorherige Version des Add-ons (0.3) abgegeben. 

Yes, as said in the extension's description, the 0.3 version of Display Quota has been ready and is just awaiting mozilla's reviewers' validation since october the 8th... I really hope they will review it and allow it to be published soon...