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由 Firefox 用户 dede5e 发表于 Dec. 7, 2018 ·

I installed it but there isn't any button to add !

这个评论是针对附加组件的一个早期版本的（1.1.0）。 

作者 ChristophK (开发者) 日期 Dec. 7, 2018 ·

Hi dede5e,

the button is not added automatically, but must be added manually to the button bar above the message pane - the one that contains the "reply" and "forward" buttons.

You can add it by right clicking on the toolbar and choosing "Customize".

Regards
Christoph