Send_mass_emails с EmailMultiAlternatives

Ответ 1

Невозможно напрямую использовать send_mass_mail() с EmailMultiAlternatives. Однако, согласно документации Django, send_mass_mail() - это просто оболочка, которая использует EmailMessage класс. EmailMultiAlternatives является подклассом EmailMessage. EmailMessage имеет параметр "connection", позволяющий указать одно соединение, которое будет использоваться при отправке сообщения всем получателям, т.е. Те же функции, которые предоставляются send_mass_mail(). Вы можете использовать функцию get_connection() для получения SMTP-соединения, как определено параметрами SMTP в настройках. ру.

Я считаю, что следующий (непроверенный) код должен работать:

from django.core.mail import get_connection, EmailMultiAlternatives

connection = get_connection() # uses SMTP server specified in settings.py
connection.open() # If you don't open the connection manually, Django will automatically open, then tear down the connection in msg.send()

html_content = render_to_string('newsletter.html', {'newsletter': n,})               
text_content = "..."                      
msg = EmailMultiAlternatives("subject", text_content, "[email protected]", ["[email protected]", "[email protected]", "[email protected]"], connection=connection)                                      
msg.attach_alternative(html_content, "text/html")                                                                                                                                                                               
msg.send() 

connection.close() # Cleanup

Ответ 2

Это send_mass_mail() переписано для использования EmailMultiAlternatives:

from django.core.mail import get_connection, EmailMultiAlternatives

def send_mass_html_mail(datatuple, fail_silently=False, user=None, password=None, 
                        connection=None):
    """
    Given a datatuple of (subject, text_content, html_content, from_email,
    recipient_list), sends each message to each recipient list. Returns the
    number of emails sent.

    If from_email is None, the DEFAULT_FROM_EMAIL setting is used.
    If auth_user and auth_password are set, they're used to log in.
    If auth_user is None, the EMAIL_HOST_USER setting is used.
    If auth_password is None, the EMAIL_HOST_PASSWORD setting is used.

    """
    connection = connection or get_connection(
        username=user, password=password, fail_silently=fail_silently)
    messages = []
    for subject, text, html, from_email, recipient in datatuple:
        message = EmailMultiAlternatives(subject, text, from_email, recipient)
        message.attach_alternative(html, 'text/html')
        messages.append(message)
    return connection.send_messages(messages)

Ответ 3

Я следовал смешанному подходу, отправляя пользователям как текстовые, так и html-сообщения и персонализируя сообщения для каждого пользователя.

Я начал с раздела Отправка нескольких писем из документации Django.

from django.conf import settings
from django.contrib.auth.models import User
from django.core import mail
from django.core.mail.message import EmailMultiAlternatives
from django.template.loader import get_template
from django.template import Context

...

connection = mail.get_connection()
connection.open()
messages = list()

for u in users:
    c = Context({ 'first_name': u.first_name, 'reseller': self,})
    subject, from_email, to = 'new reseller', settings.SERVER_EMAIL, u.email
    text_content = plaintext.render(c)
    html_content = htmly.render(c)
    msg = EmailMultiAlternatives(subject, text_content, from_email, [to])
    msg.attach_alternative(html_content, "text/html")
    messages.append(msg)

connection.send_messages(messages)
connection.close()

Ответ 4

Вот как я делаю задачу (проверенный код):

from html2text import html2text

from django.utils.translation import ugettext as _
from django.core.mail import EmailMultiAlternatives, get_connection


def create_message(subject, message_plain, message_html, email_from, email_to,
                   custom_headers=None, attachments=None):
    """Build a multipart message containing a multipart alternative for text (plain, HTML) plus
    all the attached files.
    """
    if not message_plain and not message_html:
        raise ValueError(_('Either message_plain or message_html should be not None'))

    if not message_plain:
        message_plain = html2text(message_html)

    return {'subject': subject, 'body': message_plain, 'from_email': email_from, 'to': email_to,
            'attachments': attachments or (), 'headers': custom_headers or {}}


def send_mass_html_mail(datatuple):
    """send mass EmailMultiAlternatives emails
    see: http://stackoverflow.com/questions/7583801/send-mass-emails-with-emailmultialternatives
    datatuple = ((subject, msg_plain, msg_html, email_from, email_to, custom_headers, attachments),)
    """
    connection = get_connection()
    messages = []
    for subject, message_plain, message_html, email_from, email_to, custom_headers, attachments in datatuple:
        msg = EmailMultiAlternatives(
            **create_message(subject, message_plain, message_html, email_from, email_to, custom_headers, attachments))
        if message_html:
            msg.attach_alternative(message_html, 'text/html')
        messages.append(msg)

    return connection.send_messages(messages)

Ответ 5

Вот краткая версия:

from django.core.mail import get_connection, EmailMultiAlternatives

def send_mass_html_mail(subject, message, html_message, from_email, recipient_list):
    emails = []
    for recipient in recipient_list:
        email = EmailMultiAlternatives(subject, message, from_email, [recipient])
        email.attach_alternative(html_message, 'text/html')
        emails.append(email)
    return get_connection().send_messages(emails)