InQuit OST to PST Converter you can do offline recovery of OST data. You convert OST files into PST, MSG, EML, EMLX, MBOX, Office 365 account and Live Exchange Server. It also displays the Preview option to view the items before converting from offline OST to PST file. And the good thing is that MS Outlook is not required for using the software to conversion purpose. Try the free demo version of this tool to convert 30 emails for free. There is also a 24x7 customer care facility to resolve your problems.
You should use ATS OST Converterbecause provides the feature to export the OST database to Office 365 cloud storage. It supports all version of MS Outlook (including- 2016, 2013, 2010, 2007, 2003, 2000, and below version) and compatible with all windows O/S (up to windows 10). Demo version is there to convert 30 emails for free.
SysOZ OST to PST Converter fix OST file and Export OST emails into PST, EML, MSG, vCard, vCal, EMLX, and MBOX. This tool will recover the emails with includes inbox, outbox, sent-items, deleted-items, drafts, contacts, calendars, notes (to, cc, bcc, subject, date and time) and there will be no data loss and there will be also no data change if you use this tool to recover the data.