You can use OST to PST Converter software. As it’s an application developed for solving your problem of OST to PST conversion. It can capable to convert OST files to PST Convert OST data to PST, Office 365, EML, MSG, MBOX, HTML and PDF. OST to PST Conversion tool 100% helpful to convert OST to PST emails with all email properties (to, from, cc, bcc, subject, exact date & time) It also supports all windows OS versions. There is nothing that lacks in OST to PST Converter. It’s a good software which you could work on.
Know more info- http://www.perfectdatasolutions.com/convert-ost-to-pst.html
Need an ideal program for exporting the OST file database to PST in a split second? wholeclear OST 2 PST Converter simply recover inaccessible OST items like emails, contacts, tasks, calendars, journals, etc. into PST format of Outlook 2019, 2016, 2013, 2010, 2007, 2003, and others. The conversion is simply completed in an organized manner. In this way, users can get filtered data conversion. If you have any queries, you can ask our support team which provides their services 24*7. Read at :- https://www.wholeclear.com/ost/pst/
I would like to mention here CubexSoft OST to PST Converter tool that easily migrates OST files to Outlook PST. This software supports all versions, and it efficiently holds data of MS Outlook in an offline folder to access the data without connecting to the internet. The file size is not an issue to get satisfactory conversion results. You can download the free trial version which converts few items from each folder.