Re: [Jmap] WG Review: JSON Mail Access Protocol (jmap) - reducing configuration complexity

[Ted Lemon <mellon@xxxxxxxxx>]

On Feb 13, 2017, at 12:17 PM, Dave Cridland <dave@xxxxxxxxxxxx> wrote:

If JMAP is to supplant IMAP - and I think that's a worthy goal even if
its likelihood remains a matter for debate - then JMAP has to support
the same model.

The model of IMAP is that:

* Each message resides in a single mailbox,
* Each message has a set of independent flags,
* Each message is immutable.

This would be unfortunate.  The "mailbox" paradigm really doesn't work well—as someone mentioned earlier in this thread, it makes synchronization needlessly slow and painful, and it also restricts the end user's ability to tag messages with more than one meaning.