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由 Firefox 用户 4b88a4 发表于 Sept. 26, 2021 ·

C'mon Guys,
On YOUR website you feature "FileLink provider for WebDAV" as a provider for linking attachments, then won't let me install it because it's unsigned. Let's get our act together here.

这个评论是针对附加组件的一个早期版本的（3）。 

作者 Sancus (开发者) 日期 Sept. 29, 2021 ·

Thunderbird add-ons do not require signing. Install this by searching for it in the Add-ons Manager in Thunderbird and it installs with no trouble on 91.*