1) Open a new mail 2) fill the To field with: debian-kde-REQUEST@lists.debian.org Note the the -REQUEST is important [1] 3) fill the Subject field with: unsubscribe 3) send the message 4) in the steps above are unclear check: http://www.debian.org/MailingLists/unsubscribe Best regards [1] http://www.debian.org/MailingLists/#subunsub