Oceniono na 5 z 5 możliwych gwiazdek

It's not working for some time now.
Edit: I thought there was a default snooze time option to change units and not just minutes?

Ta opinia jest o wcześniejszej wersji dodatku (2.0.1). 

What version of Thunderbird do you use? We worked hard to make it compatible with version 68. It forks for me at the moment...