What does “Recycled email address” mean?

The bounce classified as “Recycled email address” means that email address was abandoned by its owner and the Email Service Provider has recycled this address, making it available to another person.

GetResponse automatically unsubscribes such addresses from your list (you wouldn’t want to send unwanted email to a new mailbox owner who has no idea who you are).

If the new mailbox owner subscribes to your list after the bounce occurs, they will be added to your list.