Index: signup.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/signup/signup.module,v
retrieving revision 1.205.2.11
diff -u -p -r1.205.2.11 signup.module
--- signup.module	22 Jan 2009 19:00:54 -0000	1.205.2.11
+++ signup.module	24 Jan 2009 01:35:20 -0000
@@ -1295,7 +1295,7 @@ function signup_mail($key, &$message, $p
     $subject = $params['subject'];
   }
   $message['subject'] .= str_replace(array("\r", "\n"), '', $subject);
-  $message['body'][] = drupal_html_to_text($body);
+  $message['body'][] = drupal_html_to_text(check_markup($body, FILTER_FORMAT_DEFAULT));
 }
 
 /**