MAPIEx U++ Bazaar package is fully based in Noel Dillabough CMAPIEx. Its license is:
Copyright (C) 2005-2010, Noel Dillabough
This source code is free to use and modify provided this notice remains intact and that any enhancements or bug fixes are posted to the CodeProject page hosting this class for the community to benefit.
Usage: see the CodeProject article at http://www.codeproject.com/internet/CMapiEx.asp
Following this license all changes have been reported to copyright holder. See this post.
CMAPIEx contains code from Lucian Wischik MAPI Utils. Its license is:
This code (c) 2002-2006 Lucian Wischik.
The code is free and anyone can do with it whatever they like, including incorporating it in commercial products.