Moderator and Administrator get Unsubscribe link in mail and registrered users don't

I found something strange. If users are getting notifications via email that someone has reacted there is no Unsubscribe link in the email. When I as a moderator receive the same email I do have a Unsubscribe link at the bottom and also a manage subscriptions link.

Where can I change this so the registered users also have a subscribe link in the email?

Hans