I wonder what content-types email clients support besides HTML and plaintext. Would any support mp3, mp4, markdown, org or odt? EDIT: Hmmm found this[1], and t

I wonder what content-types email clients support besides HTML and plaintext. Would any support mp3, mp4, markdown, org or odt? EDIT: Hmmm found this[1], and this[2]. They talk about using TROFF, TEX, Postscript, voice data, etc. I wonder if something like that ended up implemented somewhere. EDIT 2: I opened an issue[3]. [1] https://tools.ietf.org/html/rfc1049 https://tools.ietf.org/html/rfc1049 [2] https://tools.ietf.org/html/rfc767 https://tools.ietf.org/html/rfc767 [3] https://github.com/hteumeuleu/caniemail/issues/23 https://github.com/hteumeuleu/caniemail/issues/23