You would need to write a custom address book provider service using
Extended MAPI. That's the only way to do what you want and the code for
Extended MAPI has to be written using C++ or Delphi only. MAPI is an API and
not a COM based library and has a long learning curve. Search in the MSDN
library for information about coding in Extended MAPI.
Martin W. Larsen said:
Is it possible to replace the address book in outlook or add functionality
to the existing one with a custom application using com add-ins or any other
service?