html_content with attachment in django-post_office

July 30, 2017, 10:25 p.m.

I get strange bug with attachment in django-post-office (at least, it's encountered in version 2.0.8 and lower): when the mail is sent, which consist of html-content with attachment (of any format), the mail is come, but without attachment.

I used next package version:

django==1.10.7 (and lower)
django-post-office==2.0.8 (and lower)

In more detail, the behavior of django-post-office of the specified version and the working of the mail.send() method can be described as follows:

  1. When the mail is sent with simple content, using message parameter, and with attachment - it works correctly, i. e. I get mail with attachment.
  2. When the mail is sent with content, which contains html-tags or even plain text without tags, using html_message parameter, and with attachment - it does not work correctly, i. e. I get the empty mail, but file is attached.
  3. When the mail is sent with content, using html_message parameter, but without attachment - it work correctly, i. e. I get the mail formated by html-tags and with attachment.

And I find the workaround of this strange gug: use both arguments message and html_message. For example:

msg = render_to_string('path/to/template/', {'some_data': 'some_data'})
pdf = render_to_pdf(form.pdf_template, email_data)
attachments = {'Message.pdf': ContentFile(pdf)}
mail.send(user_email, me, subject=subject, message=msg, html_message=msg, attachments=attachments)

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Author of Article

Artem Maltsev

Web-developer, having the knowlenge of programming language - Python, framework - Django, content management system - Django CMS, platform of e-commerce site - Django Shop and many other applications, using this technologies.

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Comments: 2


26.01.2019 9:17 #

A short hack is to pass ' ' (a single whitespace) as 'msg' parameter.
Found it here:


Артём Мальцев
Артём Мальцев author

28.01.2019 16:44 #

Thanks for your solution!


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