The Site Mailbox Web Service Protocol enables clients to use a web service to manage access to site mailboxes. It provides operations to set the lifecycle state of a site mailbox or unpin it from the client.
Sections 1.8, 2, and 3 of this specification are normative and can contain the terms MAY, SHOULD, MUST, MUST NOT, and SHOULD NOT as defined in RFC 2119. Sections 1.5 and 1.9 are also normative but cannot contain those terms. All other sections and examples in this specification are informative.