I didn't know what JMAP was but upon looking it up, I agree
JMAP's been Fastmail's future of email since circa 2016 iirc; it seems unlikely Google will ever get on board (NIH?) so it's doomed to remain not completely standard and fairly niche/popular but struggling for (technical) support.
JMAP's been Fastmail's future of email since circa 2016 iirc; it seems unlikely Google will ever get on board (NIH?) so it's doomed to remain not completely standard and fairly niche/popular but struggling for (technical) support.