If you want to find the best tool to convert Outlook OST to PST file so you can try the third-party solution eSoftTools OST to PST Converter software. This tool converts OST File formats into multiple formats such as PST, EML, EMLX, MSG, MBOX, HTML, Gmail, and many other formats with all email properties like To, cc, bcc, attachment, subject, etc. This tool is user-friendly for every user. You can try the demo version that can convert the first 25 items for free.
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