附加组件
![[警告]](https://addons.thunderbird.net/static/img/developers/test-warning.png?b=58a99cbb-667a0970)
权限
关于这个附加组件
You can now modify the header detail of messages.
Please see http://forums.mozillazine.org/viewtopic.php?t=279907
for screenshots and explanation
Please see http://forums.mozillazine.org/viewtopic.php?t=279907
for screenshots and explanation
