We apologize if we sent you an unsolicited message. Our e-mails are addressed personally to you, and your address is not on an automated mailing service. Our address list is composed through selecting addressees from public resources ourselves or by reference from your students or colleagues. We don’t buy these address lists, nor do we share them with others.
Since emails can be forwarded from other addresses belonging to you: please verify if the address you want to unsubscribe is actually the one where you originally received our email on, this is - obviously - the only one we can delete.