How to delete the email addresses of those who have already answered in The Bat, so that it would be possible to re-write those who did not unsubscribe?

Question

Email

I need to re-write a message to those who did not unsubscribe, for this I need to leave in the sent folder only those email addresses that were not unsubscribed to me, but it takes a very long time to do this manually, but how to copy the incoming email addresses and delete the same in the sent I don't know. Maybe someone knows how to do it.