Not quite the same, but in several community email lists, sending emails via a JPG or DOCX is the norm. Type it up in Word, and attach it to the email.
My institution's administration does this. Every message from them is typed in Word, then attached to an email whose body says "Please read the attached message". They do this for every message, no matter how trivial.
I asked them why they do this, but haven't received a reply, perhaps because my question was in an attached gzipped Postscript document.
I asked them why they do this, but haven't received a reply, perhaps because my question was in an attached gzipped Postscript document.