Are you wanting to Take backup from OST to PST with entire emails and other data. So here are the easiest method just install and used SysInspire OST to PST Converter Software, this the best well-liked and the useful application for the for the quickly convert the OST to MBOX and the 13+ other formats like , PST, Office 365, EML, HTML, EMLX, MSG, VCF, CSV, Yahoo Mail, IMAP Account, Zimbra Desktop and many more. The software interface is very easy so anyone can use this software if he belongs to technical background or non technical background.

Read more :- How to take backup from OST to PST