HTML code in body of email

I have some emails that are entirely HTML or some other sort of code as the body. Some of them don't have a subject or sender or recipient above the body of text. I had this happen before and realized that I had accidentally changed a setting so "Message body as" was not selected to be "Original HTML" but when this was going on it was all of my email that weren't properly showing and now it's some some. Please help if you're able!

Thanks!