Fixed send copy bug in mail module.

server/plugins-available/maildrop_plugin.inc.php

@@ -60,7 +60,7 @@ class maildrop_plugin {
 		Register for the events
 		*/
 		
-		$app->plugins->registerEvent('mail_user_update','maildrop_plugin','insert');
+		$app->plugins->registerEvent('mail_user_insert','maildrop_plugin','update');
 		$app->plugins->registerEvent('mail_user_update','maildrop_plugin','update');
 		$app->plugins->registerEvent('mail_user_delete','maildrop_plugin','delete');