InQuit OST to PST Converter shows the preview of the recovered mailbox before the conversion along with emails, inbox, outbox, sent-items, deleted-items, drafts, contacts, calendars, notes (to, cc, bcc, subject, date and time). The user preserves their data into several file formats like PST, EML, MSG, vCard, vCal, EMLX, HTML, and MBOX for future use. If your OST file is large in size so you can split it into several small PST files.
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https://www.inquitsoftware.com/en/ost-to-pst-converter.html