MSNPSharp is a .net library that implements the MSN protocol. It's the continuation of project DotMSN started in 2002.

We have more than 10,000,000 users around the world using services developed based on our library.

Latest MSNP18 Release: 3.0.1 (09 Nov 2009)

Legacy MSNP15 Release: 2.5.8 (30 Oct 2009)

Development Version: 3.5.DEV (Mid of 2010)

FeaturesMessagingAddress BookRoaming ProfileNameserver(NS) and Switchboard(SB)MPOP)

The library currently supports the following features:

• Custom emoticons
• Offline messages (oim)
• Mobile messages (sms)
• Group messages (circle)
• Decorated text messages
• Nudges and typing messages
• Yahoo! messages (nudge, typing, text messaging)

• Adding, removing and blocking contacts
• Creating, removing and changing contact groups
• Contact type recognition (passport, yahoo and phone)
• Saving contacts and deltas in encrypted addressbook files (.mcl)
• Convenient enumerating through contacts in allow, block, reverse, pending and forward lists
• Personal data of a contact / display image / personal message
• Event-based design to notify contact presence status changes
• Support for What's New service
• Support for Circle groups

• Privacy settings of the contact list owner
• Updating display name and personal message
• Saving display picture on MSN storage servers

• Signing in from multiple places (
• Support for bots (Provisioned_Accounts)
• Hotmail mailbox status
• Notifications of new mail
• Setting presence status
• Request or receive conversations
• Multiple users in one conversation
• File transfers
• P2P framework support
• Flexible tracing of warnings and errors
• Proxy support and custom servers

Join us !LICENSEhttp://www.xihsolutions.net), Thiago.Sayao, Pang Wu, Ethem Evlice. All rights reserved.

If you are familiar with the MSN p2p protocol (No matter the old or new one), or activity(P4) protocol and have interest in our project, please contact me : freezingsoft@hotmail.com, you are the man we are seeking for!

Copyright (c) 2002-2009, Bas Geertsema, Xih Solutions (

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

Neither the names of Bas Geertsema or Xih Solutions nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 'AS IS' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.