Yettwasezmel 4 ɣef 5 n yetran

sɛur mozillachr di Feb. 28, 2010 · aseɣwen yezgan

The Add-on 'Extra Folder Columns' ( https://addons.mozilla.org/en-US/thunderbird/addon/9716 ) has a similiar functionality for all/unread/favorite/recent folders