Hello friends, I'm MS Outlook user and i also used Master solution of KDETools OST to PST Converter tool for conversion Emails, mails from OST to new Outlook PST files. This software has been multiple advanced features facilities to transfer data from damaged OST files to PST Outlook format.
1- Split option.
2- Filter messages by date, size and etc.
3- Export ost to pst, PST, vCard, vCal, Gmail, Office 365, live exchange sever, zimbra, MBOX, EML, EMLX, NSF, HTML, PDF, OLM, and etc.