Django: How to send HTML emails with embedded imag

2020-02-03 05:50发布

站内问答 / Django
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How can I send HTML emails with embedded images? How the HTML should link to the images? The images should be added as MultiPart email attach?

Any example is very appreciated.

5条回答
▲ chillily
2楼-- · 2020-02-03 06:15

Remember that django only offer wrappers for standard smtplib - I don't know if it will help, but try to look at this example: http://code.activestate.com/recipes/473810-send-an-html-email-with-embedded-image-and-plain-t/

So I guess you could use EmailMessage's header values to define this 'image1' - message header is a dict of values, so just add something like {'Content-ID': '<image1>'} to it.

Then attach the file to your email using attach(). After that you could use the code to generate the html message like this:

html_content = '<b>Some HTML text</b> and an image: <img src="cid:image1">'
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Deceive 欺骗
3楼-- · 2020-02-03 06:21

If you want to send email with image as attachment (in my situation it was image that has been caught directly from form, after its saving) you can use the following code as example:

#forms.py

from django import forms
from django.core.mail import EmailMessage
from email.mime.image import MIMEImage


class MyForm(forms.Form):
    #...
    def save(self, *args, **kwargs):
        # In next line we save all data from form as usual.
        super(MyForm, self).save(*args, **kwargs)
        #...
        # Your additional post_save login can be here.
        #...
        # In my case name of field was an "image".
        image = self.cleaned_data.get('image', None)
        # Then we create an "EmailMessage" object as usual.
        msg = EmailMessage(
            'Hello',
            'Body goes here',
            'from@example.com',
            ['to1@example.com', 'to2@example.com'],
            ['bcc@example.com'],
            reply_to=['another@example.com'],
            headers={'Message-ID': 'foo'},
        )
        # Then set "html" as default content subtype.
        msg.content_subtype = "html"
        # If there is an image, let's attach it to message.
        if image:
            mime_image = MIMEImage(image.read())
            mime_image.add_header('Content-ID', '<image>')
            msg.attach(mime_image)
        # Then we send message.
        msg.send()
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Root（大扎）
4楼-- · 2020-02-03 06:25

http://djangosnippets.org/snippets/285/

You have to use MultiPart and cid:. It is almost always a bad idea to send html mails with images. It gives spam points to your mail and smtp server ...

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爱情/是我丢掉的垃圾
5楼-- · 2020-02-03 06:29

I achieved what op is asking for using django's mailing system. Upsides it that it'll use django settings for mailing (including a different subsystem for testing, etc. I also use mailhogs during development). It's also quite a bit higher level:

from django.conf import settings
from django.core.mail import EmailMultiAlternatives


message = EmailMultiAlternatives(
    subject=subject,
    body=body_text,
    from_email=settings.DEFAULT_FROM_EMAIL,
    to=recipients,
    **kwargs
)
message.mixed_subtype = 'related'
message.attach_alternative(body_html, "text/html")
message.attach(logo_data())

message.send(fail_silently=False)

logo_data is a helper function that attaches the logo (the image I wanted to attach in this case):

from email.mime.image import MIMEImage

from django.contrib.staticfiles import finders


@lru_cache()
def logo_data():
    with open(finders.find('emails/logo.png'), 'rb') as f:
        logo_data = f.read()
    logo = MIMEImage(logo_data)
    logo.add_header('Content-ID', '<logo>')
    return logo
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Juvenile、少年°
6楼-- · 2020-02-03 06:38

I have tried the below code and it worked.

Code: 

msg = EmailMessage()

# generic email headers
msg['Subject'] = 'Welcome'
msg['From'] = 'abc@gmail.com'
recipients = ['abc@gmail.com']

# set the plain text body
msg.set_content('This is a plain text body.')

# now create a Content-ID for the image
image_cid = make_msgid(domain='')
# if `domain` argument isn't provided, it will
# use your computer's name

# set an alternative html body
msg.add_alternative("""\
    <html>
   <body>
      <table border='0' cellpadding='1' cellspacing='0' width='800'>
         <tbody>
            <tr>
               <td height='506'>
                  <table border='0' cellpadding='0' cellspacing='0' width='600'>
                     <tbody>
                        <tr>
                           <td valign='top'>
                              <img height='190' src="cid:{image_cid}" width='800'  tabindex='0'>
                           </td>
                        </tr>
                        <tr>
                           <td height='306' valign='top'>
                              <table cellpadding='0' cellspacing='20' width='800'>
                                 <tbody>
                                    <tr>
                                       <td align='left' height='804' style='font-family:arial,helvetica,sans-serif;font-size:13px' valign='top'>
                                          Hi {name},<br><br>
                                          Welcome!
                                       </td>
                                    </tr>
                                 </tbody>
                              </table>
                           </td>
                        </tr>
                     </tbody>
                  </table>
               </td>
            </tr>
         </tbody>
      </table>
   </body>
</html>
""".format(image_cid=image_cid[1:-1],name='ABC'), subtype='html')
# image_cid looks like <long.random.number@xyz.com>
# to use it as the img src, we don't need `<` or `>`
# so we use [1:-1] to strip them off

# now open the image and attach it to the email
with open('/path/image.jpg', 'rb') as img:
    # know the Content-Type of the image
    maintype, subtype = mimetypes.guess_type(img.name)[0].split('/')

    # attach it
    msg.get_payload()[1].add_related(img.read(),
                                     maintype=maintype,
                                     subtype=subtype,
                                     cid=image_cid)
server = smtplib.SMTP(host=<hostname>, port=25)

server.starttls()
# send the message via the server.
server.sendmail(msg['From'], recipients, msg.as_string())

server.quit()
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