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.

hi,

You can enable the list unsubscribe header in Acymailing->Configuration->Mail Settings under the Advanced section.

You canedit the bounce rules in Acymailing->Mailbox Actions