We launched a new custom plugin by request of a 'daily digest'. The first time the Unsubscribe link flat out failed, the fix today was not successful, a new fix was put into place so tomorrow morning when it runs, it will work just fine. If you don't like it, please unsubscribe and you will never get it again. Unfortunately as it's a custom plugin just for our site, the ability to opt back in is not there. In the future we might consider adding it but for now opt-out is permanent.