5 つ星中 5つの評価を受けています

Works fine. But why does this need full and unlimited access to my computer? Or to Thunderbird, for that matter.

これは以前のバージョン (1.78.7) についてのレビューです。 

It doesn't. I don't know why this message appears. The only configured permission in the manifest.json is "storage", needed to save the preference setting.