title: Send Emails with html_message
body: <p>I want to send HTML-email, using Django templates like this:</p>
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html lang=&quot;en&quot;&gt;
  &lt;head&gt;
      &lt;meta charset=&quot;UTF-8&quot;&gt;
      &lt;title&gt;Title&lt;/title&gt;
  &lt;/head&gt;
  &lt;body&gt;
      Hello &lt;strong&gt;{{ message }}&lt;/strong&gt; - your account is activated.
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  <p>Also I want to send data from the backend with the Email. In this example I want to send a message from the backend with the email template.</p>
  <p>Here is my View:</p>
  <pre><code>def home(request):
      message_name = &quot;NAME&quot;
      message_email = &quot;EMAIL&quot;
      message = &quot;USER&quot;
      msg_html = render_to_string('email/email.html')
  
      send_mail(
          'message from ' + message_name,  # subject
          message,  # message
          message_email,  # from email
          ['myemail@outlook.de'],  # To Email
          html_message=msg_html,
      )
      context = {'message': message, 'message_name': message_name, 'message_email': message_email}
      return render(request, 'email/email.html', context)
  </code></pre>
  <p>When I receive the Email I only get the text and not the {{ message }} which would be <strong>USER</strong> in this example.</p>