![HTML Source Editor 的图标](https://addons.thunderbird.net/user-media/addon_icons/988/988542-64.png?modified=57bd1a18)
HTML Source Editor 1.5
作者: John Bieling
Allows to edit the source of the currently composed message. A simple alternative to ThunderHTMLedit.
关于这个附加组件
Allows to edit the source of the currently composed message. A simple alternative to ThunderHTMLedit.