Index: mimemail.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/mimemail/mimemail.module,v
retrieving revision 1.31
diff -u -p -r1.31 mimemail.module
--- mimemail.module	21 Sep 2008 02:20:56 -0000	1.31
+++ mimemail.module	23 Jan 2009 18:00:08 -0000
@@ -364,6 +364,11 @@ if (strpos(variable_get('smtp_library', 
     $subject = $message['subject'];
     if ($format = variable_get('mimemail_format', FILTER_FORMAT_DEFAULT)) {
       $body = check_markup($message['body'], $format);
+      # check_markup returns 'n/a' if the current user doesn't have
+      # permission to use $format.
+      if (($body == 'n/a') && ($format != FILTER_FORMAT_DEFAULT)) {
+        $body = check_markup($message['body'], FILTER_FORMAT_DEFAULT);
+      }
     }
     else {
       $body = $message['body'];