Send unrendered markdown as text/plain attachment

Great plugin, thanks a bunch. When I send email from Thunderbird after rendering with the Markdown Here add-on, the message is sent with content-type multipart/alternative. The text/html portion looks great. The text/plain portion does not look great. Here’s an example.

This markdown:

# Header 1
This is a *sentence*.

## Header 2
This is a *sentence*.

###  Header 3
This is a *sentence*.

####  Header 4
This is a *sentence*.

#####  Header 5
This is a *sentence*.

######  Header 6
This is a *sentence*.

Appears like so in the text/plain portion of the email:

  Header 1
This is a *sentence*.

    Header 2
This is a *sentence*.

      Header 3
This is a *sentence*.

        Header 4
This is a *sentence*.

          Header 5
This is a *sentence*.

            Header 6
This is a *sentence*.

Could you add the option of sending the unrendered mardown as the text/plain portion of the email? Since it looks better than the text/plain portion above, please consider making that the default.

[wookietreiber]

👍 on this feature being implemented.

[devurandom]

In a MIME email everything is a “part”, including the text/plain part that is usually displayed when ignoring text/html parts, correct? The only difference between it appearing as an attachment or as part of the email’s text is how it is flagged?

Under that condition, I think this would be a great idea and also allow clients like KMail, which understand Markdown natively, allow to display the plain text part beautifully, while ignoring the text/html part.