We recently released a new version of Aspose.Network for .NET v5.6. Several MSG and PST related features were improved in this version, including addition of EntryID property for messages and folders in PST file, some bug fixes while extracting messages from PST, handling non-English characters in EML to MSG conversion etc.
Please visit http://www.aspose.com/community/files/51/.net-components/aspose.network-for-.net/entry256187.aspx for release notes and download.