eSoftTools OST to PST Converter is a tool with a powerful converter that works with all MS Outlook versions 97, 98, 2000, 2002, and 2003. PST, MSG, HTML, vCal, and vCard, MBOX, EML, and EMLX are just several of the file types it may export OST to PST files. Before completing the conversion, it displays a preview of the recovered mailbox. You choose the Offline OST to Outlook PST file you want to convert. This program, which is designed using highly powerful algorithms, can also migrate OST files to cloud-based apps like Gmail, Yahoo, Office 365, and others.