http://www.codeproject.com/KB/mobile/

http://forum.xda-developers.com/index.php

WinCE.Net:
http://www.codeproject.com/KB/mobile/SuspendKiller.aspx?fid=168348&df=90&mpp=25&noise=3&sort=Position&view=Quick&select=1337090

ConnectionManager:
http://www.codeproject.com/KB/mobile/ConnectionManager.aspx

Sending Mail (2000 et < ): http://www.codeproject.com/KB/mobile/cemail.aspx

Pocket PC Developer Network
http://www.pocketpcdn.com/

Mail, Email, Pocket Outlook (ancien) :

http://www.pocketpcdn.com/sections/mail.html

http://www.google.fr/url?sa=t&source=web&ct=res&cd=10&url=http%3A%2F%2Fwww.ac6-formation.ac6.com.fr%2Fcours.php%2FcatID_%2FcoursID_49%2Fprint_PDF%2FCours_W3M.pdf&ei=Y5dBSba_LozY0gXbgPnvBg&usg=AFQjCNGVTa1NGi7x8NHWA0bMlX2FvJ6_Tw&sig2=7csPiYJsBnMD38cIl8Tz3A
http://www.pocketpcdn.com/sections/mail.html

How to Add Pocket Outlook Features to Your Mobile Application
http://www.developer.com/ws/pc/article.php/3519721

Developing Pocket Outlook Add-Ins
http://www.developer.com/ws/pc/article.php/3521266