If you want risk free 3th party tool to recover damaged/corrupted orphaned outlook OST file data without any critical problem in your stored OST emails database so stop thinking just download OST to PST converter software which fix OST file and convert OST to PST, Zimbra, Gmail, vCard, ICS, office MSG, EML, EMLX, MBOX, PDF, NSF, and etc. file formats and during the OST conversion you can splitting large size of recovered PST file upto 5GB. This program is able to support upper and lower version of OST file like as:- 5.0/5.5/2000/2003/2007/2010/2013 and 2016.

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How to Convert OST to PST Outlook