アドオン
Magistral Undo Send 1.0
作者: magistral
This extension adds an ‘Undo Send’ feature to Thunderbird—just like Gmail’s Undo Send—giving you 10 seconds to cancel an email after clicking Send.
このアドオンについて
This extension adds an ‘Undo Send’ feature to Thunderbird—just like Gmail’s Undo Send—giving you 10 seconds to cancel an email after clicking Send.
