Now and again I keep threatening to write an application that integrates tightly into Outlook. Hence, when I came across this link to OutlookSpy I just had to post it so I don't forget about it when eventually I get off my arse and write some Outlook stuff.
What is OutlookSpy?
OutlookSpy is the ultimate Outlook developer tool. Integrated directly into Outlook, it provides fast and convenient access to all Outlook Object Model objects, lets you examine values of the properties, call functions, browse object hierarchy and monitor Outlook events. CDO is supported too!
Whilst we are talking about Outlook, here is a reference to the Outlook 2003 Integration API
Related Refrences
OutlookSpy
Microsoft Office Outlook 2003 Integration API Reference