Fixed #3472 -- Don't BASE64-encode UTF-8 (or ASCII) email messages.

Patch from smurf@smurf.noris.de.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@5143 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/core/mail.py

@@ -6,12 +6,17 @@
 from email.MIMEText import MIMEText
 from email.Header import Header
 from email.Utils import formatdate
+from email import Charset
 import os
 import smtplib
 import socket
 import time
 import random
 
+# Don't BASE64-encode UTF-8 messages so that we avoid unwanted attention from
+# some spam filters.
+Charset.add_charset('utf-8', Charset.SHORTEST, Charset.QP, 'utf-8')
+
 # Cache the hostname, but do it lazily: socket.getfqdn() can take a couple of
 # seconds, which slows down the restart of the server.
 class CachedDnsName(object):