Migrating OST file data to a new system becomes seamless with the Recoveryfix OST to PST Converter Tool. This tool efficiently converts inaccessible or orphaned OST files into PST format without data loss. It retrieves emails, contacts, calendars, attachments, and more while maintaining folder structure. Ideal for system upgrades or Outlook configuration changes, it ensures a smooth, hassle-free data transfer experience.

https://www.recoveryfix.com/ost-to-pst-converter.html

I highly recommend the professional GoldyTools OST to PST Converter for reliable and efficient OST to PST file conversion. This advanced tool allows users to easily convert all OST data into Outlook PST format with just a few clicks. Its intuitive and user-friendly interface makes it accessible to everyone, even without technical expertise. The software ensures 100% accurate data conversion while preserving the original folder structure and hierarchy of the OST file in the resulting PST file.
https://www.goldytools.com/blog/how-to-convert-ost-to-pst/