For the past couple days, I've been trying to send a fairly simple plain text e-mail using both Mailjet and Sendgrid. There's no error when I send it, but the recipient can't open the message, which shows a "No content" error on most mail clients.
Here's the body of the email:
Date: 2021-02-05
From: +1-202-555-0137
Content: Lorem ipsum dolor sit amet, consectetur adipiscing elit.