from django.core.mail import EmailMessage

class FixedEmailMessage(EmailMessage):
    def __init__(self, subject='', body='', from_email=None, to=None, cc=None,
                 bcc=None, connection=None, attachments=None, headers=None):
        """
        Initialize a single email message (which can be sent to multiple
        recipients).

        All strings used to create the message can be Unicode strings (or UTF-8
        bytestrings). The SafeMIMEText class will handle any necessary encoding
        conversions.
        """
        to_cc_bcc_types = (type(None), list, tuple)
        # test for typical error: people put strings in to, cc and bcc fields
        # see documentation at http://www.djangoproject.com/documentation/email/
        assert isinstance(to, to_cc_bcc_types)
        assert isinstance(cc, to_cc_bcc_types)
        assert isinstance(bcc, to_cc_bcc_types)
        super(FixedEmailMessage, self).__init__(subject, body, from_email, to,
                                           bcc, connection, attachments, headers)
        if cc:
            self.cc = list(cc)
        else:
            self.cc = []

    def recipients(self):
        """
        Returns a list of all recipients of the email (includes direct
        addressees as well as Bcc entries).
        """
        return self.to + self.cc + self.bcc

    def message(self):
        msg = super(FixedEmailMessage, self).message()
        del msg['Bcc'] # if you still use old django versions
        if self.cc:
            msg['Cc'] = ', '.join(self.cc)
        return msg