It would be nice to see config dialogs where user’s are asked for
minimal information (user name, perhaps server name) and then the device
discovers what is available there (Mail/Contacts/Calendar/…) and offers
the user a way to select them and
Of course. The way you do that is with service discovery, not by
glomming everything into one swiss-army-knife protocol.
We have RFC 6186 which provides a straightforward way to discover
submission, pop, and imap servers for a domain. Nobody uses it, and
people who run large mail systems tell me that's because it's not
granular enough, they put different users on different servers so they
need to be able to provide per-mailbox configuration info. That
doesn't seem to me to be a terribly difficult problem, but it's not
one that I believe JMAP does or should try to solve.
R's,
John