Here I'll suggest you the best Software that can easily Convert OST to PST file format with all emails items like: email, inbox, outbox, sent items, deleted items, drafts, contacts, calendars, notes (for, cc, bcc, object, date and time).
This ost to pst converter allow you to save your Converted OST emails to PST and many other file formats like: EML, MSG, MBOX, HTML, ICS, VCARD formats. It provide search option which reduce the users effort and time. With which you can convert all ost files into pst format from any location.
This Software does not affect the efficiency of OST file and protects all the information after the conversion. you can also try this software free trial version at free of cost.
Try this software free trial version from here: OST to PST Converter