There are many tools available on the internet, which help the customer to repair OST file in Outlook 2016. Here I would like to recommend to you the eSoftTools OST Recovery software that efficiently repairs all the errors in the OST file and converts into new PST format with all items of email such as inbox, sent- items, journal, task, notes contacts. This tool provides many options to convert corrupted OST files into PST, EML, PDF, vCard, NSF, EMLX, MSG, MBOX.
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stella ost to pst recovery software is the best software to recover all ost file data in to pst file this software is recover all corrupted and unmounted ost mailbox items in to pst file this software is support all version 32bit and 64bit ost file this software is recover all ost items like emails, contacts, calendars, task, notes and many other items in to pst file. for more info visit this link https://www.stelladatarecovery.com/ost-to-pst-converter.html