Unable to get a single linebreak while sending email through Sendgrid

Question

I'm using django.core.mail to send email. I want to achieve a single linebreak at some points in the email, as shown here:

Line 1
Line 2

Line 3
Line 4

I tried doing this using \n after Line 1 and Line 3, and \n\n after Line 2 and Line 4.

When I send the email, it is received like this:

Line 1 Line 2

Line 3 Line 4

As per recommendations on other StackOverflow answers, I tried using the django.template.loader.render_to_string method to generate the appropriate string from a file, but it generates a string with the \n in the exact places where I put them, and so on sending the email it produces the same undesired result.

When I print the string to stdout it appears as desired.

In summary, the \n\n are working but the \n are getting converted to spaces while sending email through Django's send_mail. How can this be solved? Please note that this question is regarding plaintext emails, not HTML ones.

EDIT: Source, as requested in the comments:

from django.core.mail import send_mail
send_mail(
    'Test subject',
    'Line 1\nLine 2\n\nLine 3\nLine 4\n\n',
    '[email protected]',
    ['[email protected]'],
)

Sent using SMTP via SendGrid, as is specified in my settings.py file:

EMAIL_HOST = 'smtp.sendgrid.net'
EMAIL_HOST_USER = 'myusername'
EMAIL_HOST_PASSWORD = 'mypassword'
EMAIL_PORT = 587
EMAIL_USE_TLS = True

Answer 1

This is happening because you're using Sendgrid, which in some cases will convert your plain text messages to HTML. Most likely you have configured it to do open/click tracking and it cannot do these in plain text, so it converts your message to HTML.

The link above offers these solutions:

1. You can turn off the filters causing the conversion from plain text to HTML.

2. If you start each line with a space, this will add a “preformatted” tag around the line.

3. You can separate new sentences with double newlines, which will add a "paragraph" tag around the sentence.

4. You can convert your message to HTML, bypassing our need to convert it altogether

5. To disable conversion globally, visit Mail Settings --> Plain Content and enabled the suppression.