English (en-GB) Language Pack

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由 Matt 发表于 Sept. 28, 2018 · 永久链接

The information provided it very lacking but I managed to find out how to install this using Thunderbird 52.9.1.

1) Download the .xpi file.
2) Go to Tools->Add-ons
3) Click the cog and select "Install Add-on From File"

Hope that helps!