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.
Very few enterprises these days provide a “Text only, please” option in
their E-Mail subscription options. Jira is, by all means, terrible
software, but at least they do have this feature. I guess it's one of
those situations where few people understand what it is and why you
would want that. And even less people who care.
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
[2] https://tools.ietf.org/html/rfc767
[3] https://github.com/hteumeuleu/caniemail/issues/23