Use the
eSoftTools OST to PST Converter Software if you wish to Export Outlook OST to PST. Users can convert huge OST files into smaller PST formats with this user-friendly program without losing any data. Users can also save OST emails as PST, vCard, or HTML files, and export OST emails to RTF, TXT, and HTML formats. Additionally, it is compatible with OST files from Windows 2003, 2007, 2013, and previous versions.
Read more:- Export Outlook OST to PST