Can we send plain text email notifications?

I'm considering your forms for clients Squarespace site. Can you deliver the form responses to multiple email addresses in plain text format? 

-CC

Thank you for contacting us.

Multiple email recipients are supported. You can also edit the content of the email.

However, the email content type will be text/html:

Content-Type: text/html;

If you have any follow up questions, please let us know.