We would like to create some webservices around the zimbra backend, preferably using the REST interface for CRUD. Having searched the forums, read the wiki on user migration, the documentation and various blogposts (thanks Roland), it's still unclear which parts can or can't be reached through REST. Some parts seem to support remote queries, and some parts even support create/update operations through POST. As an NE customer, we've contacted support and even they can't seem to provide us with a clear answer.
Of course, there's always SOAP, but that would require a lot of study, since it looks pretty closely bound to the client and we have no way of telling how stable and consistent it will prove to be.
So hopefully, some internal documentation on REST exists which is more complete than the very specific examples found online. And finally, are there plans to expose more if not all of the zimbra functionality through REST?
Zimbra will prove to be a fantastic webservices platform, if these aspects are publicized in a clear and consistent manner.