[1.6.x] Changed console and filebackend to use msg.as_bytes to output the data as it would get send via smtp.

Backport of c988745cca from master.

django/core/mail/backends/console.py

@@ -5,6 +5,7 @@ import sys
 import threading
 
 from django.core.mail.backends.base import BaseEmailBackend
+from django.utils import six
 
 class EmailBackend(BaseEmailBackend):
     def __init__(self, *args, **kwargs):
@@ -12,6 +13,14 @@ class EmailBackend(BaseEmailBackend):
         self._lock = threading.RLock()
         super(EmailBackend, self).__init__(*args, **kwargs)
 
+    def write_message(self, message):
+        msg = message.message().as_bytes()
+        if six.PY3:
+            msg = msg.decode()
+        self.stream.write('%s\n' % msg)
+        self.stream.write('-' * 79)
+        self.stream.write('\n')
+
     def send_messages(self, email_messages):
         """Write all messages to the stream in a thread-safe way."""
         if not email_messages:
@@ -20,9 +29,7 @@ class EmailBackend(BaseEmailBackend):
             try:
                 stream_created = self.open()
                 for message in email_messages:
-                    self.stream.write('%s\n' % message.message().as_string())
-                    self.stream.write('-' * 79)
-                    self.stream.write('\n')
+                    self.write_message(message)
                     self.stream.flush()  # flush after each message
                 if stream_created:
                     self.close()

django/core/mail/backends/filebased.py

@@ -37,6 +37,11 @@ class EmailBackend(ConsoleEmailBackend):
         kwargs['stream'] = None
         super(EmailBackend, self).__init__(*args, **kwargs)
 
+    def write_message(self, message):
+        self.stream.write(message.message().as_bytes() + b'\n')
+        self.stream.write(b'-' * 79)
+        self.stream.write(b'\n')
+
     def _get_filename(self):
         """Return a unique file name."""
         if self._fname is None:
@@ -47,7 +52,7 @@ class EmailBackend(ConsoleEmailBackend):
 
     def open(self):
         if self.stream is None:
-            self.stream = open(self._get_filename(), 'a')
+            self.stream = open(self._get_filename(), 'ab')
             return True
         return False