If you are a user of OST database and your OST files has been corrupted because of some reasons then you can recover emails from OST files in Outlook 2016 without any trouble by using eSoftTools OST to PST Converter Software. You can store your OST data into PST, Office 365, EML, MSG, ICS, CSV, EMLX, vCal, MBOX, HTML, vCard and all email attachments etc. This tool has the facility that it shows the preview of recovered mailbox of Offline OST items such as - task, notes, calendar, drafts, contact, inbox items, outbox items, and appointments, etc. This software supports all Windows editions 10, 8, 7, Vista, XP and MS Office 2016, 2013, 2010, 2007, 2003, 2002 and below editions. It also provides the functionality of the free trial pack that helps you to convert 50 items from each folder.
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Visit here for more info: Recover emails from OST file in Outlook 2016