Exchange Web Services (EWS) are becoming increasingly important. With the EWS, applications are able to access many of the Exchange functions. The EWS interface has been implemented since Exchange 2007. I know many applications that still access Exchange via MAPI, all these applications will no longer be Exchange 2013 compatible, as the protocol only supports RPCoverHTTPS but no longer RPC(Mapi). So if you are not yet familiar with the interface or have not yet dealt with it, you should do so as soon as possible.
The EWS can even be used via Powershell, Mike Pfeiffer has created some great scripts for this, which he also offers for download:
The EWS API can be downloaded here:
http://www.microsoft.com/en-us/download/details.aspx?id=28952
The interface is also well documented, making it very easy to use:
http://msdn.microsoft.com/en-us/library/exchange/bb204119(v=exchg.140).aspx
There are countless examples of the EWS on the net. So convert MAPI applications quickly...
Independentsoft stellt sowohl .NET und Java Klassen für Exchange Web Services als auch WebDav zur Verfügung.
Du findest diese unter folgenden Link: http://www.independentsoft.com/index.html
-Christian