Here’s a real, digitally-signed urgent-action message AAAS sent in 1996.
Date sent: Fri, 18 Oct 1996 17:12:51 -0400
Send reply to: AAAS Human Rights Action Network <AAASHRAN@gwuvm.gwu.edu>
Subject: CUBA--ENGINEER ARRESTED AND DENIED MEDICAL TREATMENT
To: Multiple recipients of list AAASHRAN <AAASHRAN@gwuvm.gwu.edu>
-----BEGIN PGP SIGNED MESSAGE-----
AMERICAN ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE HUMAN RIGHTS NETWORK (AAASHRAN)
CUBA--ENGINEER ARRESTED AND DENIED MEDICAL TREATMENT IN PRISON
<snip -- 65 lines cut to save space>
-----BEGIN PGP SIGNATURE-----
iQCVAwUBMmgJKRfHO2gj8TB1AQHYtgQAjtbyPZB0r8KJjfN2KnMisyIlJdj6Z3MC
QaNfZTK/5yeBiKkHMZmA4+MzflRS5momvs6J6rkos2JwX8iI8Nvp6m/FzCRTMjzg
EjhACQNyk804cvjErcAXVKN+8FAsaHB3FiO9DjJw3QHFaWmBJpC5qHPHuWzUFqDq
-----END PGP SIGNATURE-----