Oceniono na 3 z 5 możliwych gwiazdek

I would have given more stars but I am concerned about the permissions required for installation which says the extension "requires your permission to have full,unrestricted access to Thunderbird and your computer". Why the computer ?

Ta opinia jest o wcześniejszej wersji dodatku (2.5). 

This is the standard permissions popup for all add-ons.