This is a question that we hear frequently since we have released Exchange 2007. And our answer has to be heard loud and clear: going forward Exchange Web Services should be the API of choice for...
Updated Jul 01, 2019
Version 2.0
Blog Post
An add-on to Chris Warwick's comment - what is the message for those of us who do pure MAPI development? As long as an API cannot do what MAPI does (WebDAV with embedded messages, separate API for GAL), it will not be very useful.