# Table of contents:
# Introduction
The Offline Message Inbox (or "RSI") is a SOAP (XML) Web Service. It was introduced with MSNP11.
It's default HTTPS URL is https://rsi.hotmail.com/rsi/rsi.asmx.
Not to be confused with the Offline Instant Messaging service.
# Authentication
This service requires Passport Authentication, either using Passport SSI 1.4 or Passport SOAP (RST).
Read the section on the <PassportCookie> element about this.
# Actions
All actions listed have the prefix of
http://www.hotmail.msn.com/ws/2004/09/oim/rsi/.
# Shared Templates
This is used by all Actions listed, as far as we know.
# Client/Request
The following sub-headings are XML elements for the client's request.
# soap:EnvelopeThis element has three attributes:
xmlns:soap: This is always set tohttp://schemas.xmlsoap.org/soap/envelope/.xmlns:xsi: This is always set tohttp://www.w3.org/2001/XMLSchema-instance.xmlns:xsd: This is always set tohttp://www.w3.org/2001/XMLSchema.
This element only has one child:
<PassportCookie>: Described below.
This element has only one attribute:
xmlns: This is always set tohttp://www.hotmail.msn.com/ws/2004/09/oim/rsi.
This element has two children:
<t>: The Passport ticket ("MSPAuth") for themessenger.msn.comdomain.<p>: The Passport profile ("MSPProf") for themessenger.msn.comdomain.
Your request element and it's children goes here.
# Server/Response
The following sub-headings are XML elements for the server's response.
# soap:EnvelopeThis element has three attributes:
xmlns:soap: This is always set tohttp://schemas.xmlsoap.org/soap/envelope/.xmlns:xsi: This is always set tohttp://www.w3.org/2001/XMLSchema-instance.xmlns:xsd: This is always set tohttp://www.w3.org/2001/XMLSchema.
This element contains the server's response elements and their children for the action.