php send email with image

Question

I am trying to send an email with a picture; the body of my email is:

Answer 1

No, it's not because of the heredoc. You need to send a properly formatted HTML mail, which you aren't. There's various headers and MIME 'skeleton' structural stuff that you're not sending at all.

Don't try to build one yourself. Use Swiftmailer or PHPMailer to do that for you.