If you want a risk-free solution to convert OST to PST, then you should try a professional Enstella OST to PST Recovery Software. It converts and recovers OST files into PST, EML, MSG, HTML, MBOX, VCARD, EMLX, and imports OST to Office365, Gmail, Google Workspace, YahooMail, Outlook.com, and Hotmail accounts. Users can also cut the recovered PST file into small multiple PST files with the guidance of their splitting feature. Try this software free demo version and free to convert 25 items of every folder & subfolder with any 30-day money-back guarantee.