Index: simplenews_action.module
===================================================================
RCS file: /cvs/drupal/contributions/modules/simplenews/simplenews_action/simplenews_action.module,v
retrieving revision 1.5
diff -u -r1.5 simplenews_action.module
--- simplenews_action.module   21 Jan 2009 08:20:44 -0000   1.5
+++ simplenews_action.module   8 Jul 2009 08:33:18 -0000
@@ -50,6 +50,18 @@
   );
 }
 
+/*
+* Implementation of hook_action_info_alter()
+*/
+function simplenews_action_action_info_alter(&$info) {
+  foreach (array_keys($info) as $key) {
+    //$info[$key]['hooks'] = 'any';
+    if ( $key == 'system_send_email_action' ) {
+       $info[$key]['hooks']['simplenews'] = array('subscribe', 'unsubscribe');
+    }
+  }
+}
+
 /**
  * A configurable Drupal action. Send a simplenews newsletter.
  *   hook = cron: Send a newsletter to all subscribers.