Activate inactive Subscribers

Hi! Threw the pandemy corona I had sent only one newsletter per half an year and so some subscribers (approx. 40) get into the state inactive. But I want to send the new newsletter also to them. How is it possible to set the inactiver state to active.

I know If I click every single subrciber I can change from inactive to active.
But is there a bulk action possible or have I to do this for evry inactive entry?

Best Regards

Heinz