Free to export OST to PST file

The vMail OST to PST Converter utility can be used to export Outlook 2019, 2016, 2013, 2010, 2007, and 2003 PST files from batch OST emails. Any version of Windows, including 11, 10, 8, 7, 8.1, Vista, and XP, can be utilized with the Windows-supported device. To transfer OST files to Outlook, no other applications need to be installed. The tool allows you to transfer full OST files—including contacts, calendars, and emails—to Outlook. For additional information, download the OST Converter demo version.

Know more info- https://www.vsoftware.org/ost-to-pst-converter.html