If you are looking for a good tool to convert OST files to PST files. I recommend using the Kernel for OST to PST Converter. This tool is very safe and reliable for converting OST files to PST without any risk. The software quickly changes emails, files, calendars, contacts, notes, journals, and everything in your message (like To, Cc, Bcc, images, and attachments). You can also use it to repair and recover damaged OST file data. The tool is fully compatible with the latest versions of Microsoft Outlook and Windows. https://www.nucleustechnologies.com/ost-to-pst-converter.html