In version 5 I could edit the bounce handling rules, but in 8 I can't find any of this. Where do you edit these rules? I just want to add an unsubscribe header. Documentation says...
List-Unsubscribe handling: AcyMailing can add a "List-Unsubscribe" header to the sent emails to let your users unsubscribe easily and avoid you to be considered as a spammer. This sends a "Please unsubscribe user ID xxx" email to you. This bounce rule will automatically handle this kind of email so you don't have to unsubscribe users manually.