Python – Django Html email adds extra characters to the email body

djangoemailpython

I'm using Django to send an e-mail which has a text part, and an HTML part. Here's the code:

    subject = request.session.get('email_subject', None)
    from_email = request.session.get('user_email', None)
    to = request.session.get('user_email', None)
    bcc = [email.strip() for email in request.session.get('email_recipients', None).split(settings.EMAIL_DELIMITER)]

    text_content = render_to_response(email_text_template, {
        'body': request.session.get('email_body', None),
        'link': "http://%(site_url)s/ecard/?%(encoded_greeting)s" % {
            'site_url': settings.SITE_URL,
            'encoded_greeting': urlencode({'g': quote_plus(request.session.get('card_greeting'))}),
        },
    }, context_instance=RequestContext(request))

    html_content = render_to_response(email_html_template, {
        'body': request.session.get('email_body', None),
        'link': "http://%(site_url)s/ecard/?%(encoded_greeting)s" % {
            'site_url': settings.SITE_URL,
            'encoded_greeting': urlencode({'g': request.session.get('card_greeting')}),
        },
        'site_url': settings.SITE_URL,
    }, context_instance=RequestContext(request))

    email = EmailMultiAlternatives(subject, text_content, from_email, [to], bcc)
    email.attach_alternative(html_content, "text/html")
    sent = email.send()

When the user receives the email, it has this text in it: "Content-Type: text/html; charset=utf-8". Is there a good way to get rid of this?

Best Answer

You are generating html_content and text_content with render_to_response, which returns an HttpResponse object.

However you want html_content and text_content to be strings, so use render_to_string instead.

You can import render_to_string with the following line:

from django.template.loader import render_to_string

Related Solutions

The maximum length of a valid email address

An email address must not exceed 254 characters.

This was accepted by the IETF following submitted erratum. A full diagnosis of any given address is available online. The original version of RFC 3696 described 320 as the maximum length, but John Klensin subsequently accepted an incorrect value, since a Path is defined as

Path = "<" [ A-d-l ":" ] Mailbox ">"

So the Mailbox element (i.e., the email address) has angle brackets around it to form a Path, which a maximum length of 254 characters to restrict the Path length to 256 characters or fewer.

The maximum length specified in RFC 5321 states:

The maximum total length of a reverse-path or forward-path is 256 characters.

RFC 3696 was corrected here.

People should be aware of the errata against RFC 3696 in particular. Three of the canonical examples are in fact invalid addresses.

I've collated a couple hundred test addresses, which you can find at http://www.dominicsayers.com/isemail

Python – Sending HTML email using Python

From Python v2.7.14 documentation - 18.1.11. email: Examples:

Here’s an example of how to create an HTML message with an alternative plain text version:

#! /usr/bin/python

import smtplib

from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText

# me == my email address
# you == recipient's email address
me = "my@email.com"
you = "your@email.com"

# Create message container - the correct MIME type is multipart/alternative.
msg = MIMEMultipart('alternative')
msg['Subject'] = "Link"
msg['From'] = me
msg['To'] = you

# Create the body of the message (a plain-text and an HTML version).
text = "Hi!\nHow are you?\nHere is the link you wanted:\nhttp://www.python.org"
html = """\
<html>
  <head></head>
  <body>
    <p>Hi!<br>
       How are you?<br>
       Here is the <a href="http://www.python.org">link</a> you wanted.
    </p>
  </body>
</html>
"""

# Record the MIME types of both parts - text/plain and text/html.
part1 = MIMEText(text, 'plain')
part2 = MIMEText(html, 'html')

# Attach parts into message container.
# According to RFC 2046, the last part of a multipart message, in this case
# the HTML message, is best and preferred.
msg.attach(part1)
msg.attach(part2)

# Send the message via local SMTP server.
s = smtplib.SMTP('localhost')
# sendmail function takes 3 arguments: sender's address, recipient's address
# and message to send - here it is sent as one string.
s.sendmail(me, you, msg.as_string())
s.quit()

Best Answer

Related Solutions

The maximum length of a valid email address

Python – Sending HTML email using Python

Related Topic