OST to PST Conversion
MS Outlook stores data items into OST and PST file formats. OST and PST in brief before discussing on how to convert OST to PST in Outlook 2016, 2013,2010 and its below version. Exchange OST Files: MS Outlook stores Offline Outlook Data File ( or OST) format for synchronization. For further information https://www.sysinfotools.com/blog/convert-ost-into-pst-format-in-outlook-2013/