7c258130_lopment_in_VS_2012__C___VB_NET__Description
[Outlook Item] Data Storage [How to access] OutlookApp.SessionOutlookApp.GetNamespace(“MAPI”) [Description] 
The Outlook data store is called the Namespace. It is also known as the Session object. This object provides you with access to Outlook’s folder structure.
Outlook 2013 add-in development in VS 2012: C#, VB.NET
Description