[petercooper]

I was keen to try out 100% pure plain text emails and ran into this problem too. The reading experience on mobile wasn't good, and that's increasingly where people are. Very spartan, minimal HTML resolves all the problems, but then you're back to HTML.

[JohnFen]

If all that was used was basic HTML formatting tags, I'd be fine with it. But that's not what it is.

[petercooper]

Sure, but if there were enough motivation and interest from various broader communities (not just in email, but also security, say) maybe a "Gemini" style approach could work. I would be very happy for email to be limited to a Markdown-style subset of HTML.