Bem-vindo as Extensões para o Thunderbird.
Adicione recursos e estilos extras para tornar o Thunderbird só seu.
Fechar![Ícone de Return Receipt Toolbar Button](https://addons.thunderbird.net/user-media/addon_icons/6/6038-64.png?modified=1419671010)
Return Receipt Toolbar Button 0.20 Requer reinicialização
por Leszek Życzkowski
Allow you to add a Return Receipt button to mail compose window toolbar.
Sobre esta extensão
Extension is available in 19 languages: Catalan, Czech, Chinese, Danish, Dutch, English, French, German, Italian, Japanese, Polish, Portuguese (Brazilian), Portuguese (Portugal), Russian, Serbian, Spanish (Spain), Swedish, Turkish, and Ukrainian.