Bem-vindo as Extensões para o Thunderbird.
Adicione recursos e estilos extras para tornar o Thunderbird só seu.
Fechar![Ícone de Extra Folder Columns](https://addons.thunderbird.net/static/img/addon-icons/default-64.png)
Extra Folder Columns 1.1.5 Requer reinicialização
por Joey Minta, Thunderbird Development Team
This extension is for those TB3 users who want the multiple-columns view that TB2 allowed
IMPORTANT: If you are using Thunderbird 38 or later, uninstall this addon. The functionality is in core now.