On Friday, 23 February 2018 at 13:55:44 UTC, Jonathan M Davis
And none of the features that you're talking about really make
sense when you're dealing with NNTP or a mailing list. It's all
just plain text.
Well, nntp actually supports basically all that stuff: you can do
multipart/alternative for rich text and mime attachments for
inline images, all kinds of stuff. I think it might even allow
editing in the protocol, though propagating that to email users
might be bizarre (still doable though).
So it isn't *actually* a technical limitation... though a lot of
us might never use those features because we do interface with it
as a plain text thing.