This information should give you a good start towards understanding Exchange Store Event Sinks and be a good reference for the useful links on MSDN. The key is to start playing with it in a test environment to understand how all this works together. I will follow up with a part two tomorrow which will include information on CDOEX, ADO, and working calendaring items.
Updated 1/22/2009 – Fixed and removed some broken links.
Lets we discuss about Event sink: It will sink? Just for words, it might be fascinating or it will be