eSoftTools OST to PST Converter tool is the most famous OST file conversion tool. It easily exports the outlook OST file into PST and many other formats such as EML, HTML, Yahoo, Gmail, office 365, HTML, ICS, Zimbra, MBOX, EMLX, and vCard. It also works in all MS Outlook versions such as 2019, 2010, 2007, 2003, 2016, and 2013. The live preview feature helps you to see the preview of your Outlook OST file before conversion. Try the free demo version of this tool from the official website of eSoftTools.
Read more- Exports the outlook OST file into PST