Outlook 2007 and Simple MAPI

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We have seen a lot of applications that use Simple MAPI. Unlike Extended MAPI (or MAPI), it is supported in managed code as well.

Also, a lot developers have come across issues with Simple MAPI with Outlook 2007.
Starting with Outlook 2007, Simple MAPI is no longer supported. However, its still supported by Exchange 2003.
https://msdn.microsoft.com/en-us/library/cc815424.aspx