DragToCompose 0.3 要再起動
作者: Sven Giermann
Enables dragging a file to Thunderbird for composing a new message without opening composer window first.
このアドオンについて
So you do not have to begin a new message and attach the file later.
This is commonly known way from many other applications! To reduce problems, I decided to only capture dragging over compose button in toolbar.