JMAP for Calendars, Contacts and Files Now in Stalwart

Anyone got a link to a better sales job on JMAP & friends?

It sounds awesome but the way it is intro'd here:

  Over the past few years, the IETF has been redefining how email, calendars, and contacts are synchronized and shared. Building upon the success of JMAP for Mail, several new protocol extensions have been introduced:

  JMAP for Calendars - A modern replacement for CalDAV and CalDAV Scheduling.
  JMAP for Contacts – A powerful alternative to CardDAV.
  JMAP for File Storage – A replacement for WebDAV-based file storage.
  JMAP Sharing – A modern successor to WebDAV ACL.
  JSCalendar - A clean, JSON-based evolution of iCalendar.
  JSContact – A modernized, JSON-native successor to vCard.

...gave me pause. A protocol I've never heard even though I hang out here for an hour a day, was so successful, that it launched 6 new projects?

Sounds more like the parts of the web dev that give me ick (new and shiny; rush to copy new and shiny in other contexts; give it a year; and all of a sudden only 1 of the 6 actually was successful)

The big pitch for JMAP is for a modern web-tech-only approach to email/calendar/"groupware" servers. One reason to do that would be to make it easier to also build email/calendar/"groupware" clients entirely out of modern web-tech. Today most "web email clients" are bespoke to specific stacks/email servers. A dream of JMAP is that with the right CORS policy a single web client could interact with multiple JMAP servers, using only fetch/XHR.

The modernization efforts of JMAP are interesting, too. Most of the old protocols are a mess of bespoke plaintext formats full of quirks evolved over decades in a giant mess of different software. Even the stuff that was already web tech like WebDAV and its extensions CalDAV and CardDAV were full of quirks, violated some REST "rules", and originally intended for a different purpose (file shares/FTP replacement). JMAP is much closer to "plain REST" than WebDAV's complex HTTP protocol extensions/changes.