--- token_cck.inc.orig	2008-05-19 16:01:24.000000000 +0200
+++ token_cck.inc	2008-06-03 23:17:33.000000000 +0200
@@ -136,6 +136,7 @@
 
       $tokens['user reference']['uid']   = t("Referenced user ID");
       $tokens['user reference']['name']  = t("Referenced user name");
+      $tokens['user reference']['mail']  = t("Referenced user email address");
       $tokens['user reference']['link']  = t("Formatted html link to referenced user");
 
       return $tokens;
@@ -145,9 +146,10 @@
   function userreference_token_values($type, $object = NULL, $options = array()) {
     if ($type == 'field') {
       $item = $object[0];
-
+      $refuser = user_load(array('uid'=>$item['uid']));
       $tokens['uid']   = $item['uid'];
       $tokens['name']  = strip_tags($item['view']);
+      $tokens['mail']  = $refuser->mail;
       $tokens['link']  = $item['view'];
 
       return $tokens;