id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
20369	Django 1.5.1: Sending HTML mails with Unicode string contents fails	Carsten Fuchs	nobody	"A while after upgrading from Django 1.4 to Django 1.5.1 (using Python 2.6.5), I realized that I no longer got any of the automatic e-mails that are normally sent when an error occurs.

Then problem occurs only when HTML emails are sent, sending plain-text emails works without problems.

In `settings.py`, my `LOGGING` configuration is:

{{{
#!python
LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'filters': {
        'require_debug_false': {
            '()': 'django.utils.log.RequireDebugFalse'
        }
    },
    'handlers': {
        'mail_admins': {
            'level': 'ERROR',
            'filters': ['require_debug_false'],
            'class': 'django.utils.log.AdminEmailHandler',
            # 'include_html': True,  # Doesn't work with Django 1.5.1.
        }
    },
    'loggers': {
        'django.request': {
            'handlers': ['mail_admins'],
            'level': 'ERROR',
            'propagate': True,
        },
    }
}
}}}

That is, emails are reliably received when `include_html` is set to `False`, but not when at `True`, which used to work with Django 1.4.


At the management shell, with Django 1.5.1:

{{{
#!python
>>> from django.core.mail import mail_admins

# No Umlaut-characters --> ok.
>>> mail_admins(u""Test 1"", u""Message Body"", html_message=u""<h1>Ueberschrift</h1>"")

# Umlaut-character in the subject --> ok.
>>> mail_admins(u""Täst 2"", u""Message Body"", html_message=u""<h1>Ueberschrift</h1>"")

# Umlaut-character in the message body --> error.
>>> mail_admins(u""Test 3"", u""Mässage Body"", html_message=u""<h1>Ueberschrift</h1>"")
Traceback (most recent call last):
  File ""<console>"", line 1, in <module>
  File ""/usr/local/lib/python2.6/dist-packages/django/core/mail/__init__.py"", line 98, in mail_admins
    mail.send(fail_silently=fail_silently)
  File ""/usr/local/lib/python2.6/dist-packages/django/core/mail/message.py"", line 255, in send
    return self.get_connection(fail_silently).send_messages([self])
  File ""/usr/local/lib/python2.6/dist-packages/django/core/mail/backends/smtp.py"", line 95, in send_messages
    sent = self._send(message)
  File ""/usr/local/lib/python2.6/dist-packages/django/core/mail/backends/smtp.py"", line 113, in _send
    force_bytes(message.as_string(), charset))
  File ""/usr/local/lib/python2.6/dist-packages/django/core/mail/message.py"", line 169, in as_string
    g.flatten(self, unixfrom=unixfrom)
  File ""/usr/lib/python2.6/email/generator.py"", line 84, in flatten
    self._write(msg)
  File ""/usr/lib/python2.6/email/generator.py"", line 109, in _write
    self._dispatch(msg)
  File ""/usr/lib/python2.6/email/generator.py"", line 135, in _dispatch
    meth(msg)
  File ""/usr/lib/python2.6/email/generator.py"", line 201, in _handle_multipart
    g.flatten(part, unixfrom=False)
  File ""/usr/lib/python2.6/email/generator.py"", line 84, in flatten
    self._write(msg)
  File ""/usr/lib/python2.6/email/generator.py"", line 109, in _write
    self._dispatch(msg)
  File ""/usr/lib/python2.6/email/generator.py"", line 135, in _dispatch
    meth(msg)
  File ""/usr/lib/python2.6/email/generator.py"", line 178, in _handle_text
    self._fp.write(payload)
UnicodeEncodeError: 'ascii' codec can't encode character u'\xe4' in position 1: ordinal not in range(128)

# Umlaut-character in the html message --> error.
>>> mail_admins(u""Test 4"", u""Message Body"", html_message=u""<h1>Überschrift</h1>"")
Traceback (most recent call last):
    [ Exact same stack trace as above. ]
UnicodeEncodeError: 'ascii' codec can't encode character u'\xdc' in position 4: ordinal not in range(128)

# As before, Umlaut-character in the html message, but plain """" byte string, not u"""" --> ok.
>>> mail_admins(u""Test 5"", u""Message Body"", html_message=""<h1>Überschrift</h1>"")
}}}
"	Bug	closed	Core (Mail)	1.5	Normal	duplicate			Unreviewed	0	0	0	0	0	0