Kernel for OST to PST tool uses advanced programing algorithms that ensures flawless conversion of OST files to PST files, to Office 365, email servers and to web-based email apps. Download Outlook OST to PST tool to convert multiple OST files at once for even smoother and effortless migration process. This software supports all the modern versions of Exchange Server (2016), MS Outlook (including 2016), Outlook Express (6.0) & Windows OS (10).