Index: wp-includes/class-phpmailer.php
===================================================================
--- wp-includes/class-phpmailer.php	(revision 11974)
+++ wp-includes/class-phpmailer.php	(working copy)
@@ -47,7 +47,7 @@
    * Sets the CharSet of the message.
    * @var string
    */
-  var $CharSet           = 'iso-8859-1';
+  var $CharSet           = 'UTF-8';
 
   /**
    * Sets the Content-type of the message.