Hello, 
According to this post: 
I use the provided source code: 
Using MyStorage As Email.Storage.Pst.PersonalStorage = Email.Storage.Pst.PersonalStorage.FromFile(“D:\source.ost”) 
MyStorage.SaveAs(“D:\target.pst”, Ema…...Converting Outlook Files Class Libraries & REST APIs for the developers...& process Files from Word, Excel, PowerPoint, Visio, PDF, CAD...