Do you know the process to recover emails from OST file Outlook 2016? I would suggest you use the SysInspire OST to PST Converter tool. Which is best for the converter of OST to PST file and also 15+ others formats like PST, Office 365, EML, EMLX, HTML, MSG, CSV, VCF, Yahoo Mail, IMAP Account, Gmail, Zimbra Desktop and many more. If you want to try this software the free version is also available in which you can convert 25 emails from each folder