Add mktime_tz to __all__. It's documented as being available in email.utils.
diff --git a/Lib/email/utils.py b/Lib/email/utils.py
index 50010e6..87979dc 100644
--- a/Lib/email/utils.py
+++ b/Lib/email/utils.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2001-2006 Python Software Foundation
+# Copyright (C) 2001-2009 Python Software Foundation
# Author: Barry Warsaw
# Contact: email-sig@python.org
@@ -13,6 +13,7 @@
'formatdate',
'getaddresses',
'make_msgid',
+ 'mktime_tz',
'parseaddr',
'parsedate',
'parsedate_tz',