Are you looking for a reliable way to export OST files to PST? If yes, then use OST to PST Converter Tool which is capable of extracting OST files from multiple email clients and save them in Outlook. The tool supports all Windows Operating System of sizes 32 bit and 64 bit including Windows edition 10, 8, 7, 8.1, Vista, XP, etc. The advance utility also keeps all mail properties and folder hierarchy intact. OST to PST Converter moves all OST files with embedded attachments to PST. You can also try freeware edition of OST to PST Converter to export the first 30 OST files to PST for free of cost.