Index: includes/mail.inc 
===================================================================
RCS file: /cvs/drupal/drupal/includes/mail.inc,v
retrieving revision 1.7
diff -u -r1.7 mail.inc
--- includes/mail.inc	4 Sep 2007 21:10:45 -0000	1.7
+++ includes/mail.inc	31 Jan 2008 04:55:14 -0000
@@ -260,7 +260,7 @@
   // Cache list of supported tags.
   static $supported_tags;
   if (empty($supported_tags)) {
-    $supported_tags = array('a', 'em', 'i', 'strong', 'b', 'br', 'p', 'blockquote', 'ul', 'ol', 'li', 'dl', 'dt', 'dd', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'hr');
+    $supported_tags = array('a', 'em', 'i', 'strong', 'b', 'br', 'p', 'blockquote', 'ul', 'ol', 'li', 'dl', 'dt', 'dd', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'hr', 'code', 'cite');
   }
 
   // Make sure only supported tags are kept.