Now transfer OST to PST is easier. Easy to use Online Free OST converter
software which help you in export your Emails items from Outlook OST to PST file format and other file formats including- PST, Zimbra, Gmail, EML, EMLX, vCard, ICS, MSG, Office 365, Live Exchange server, MBOX and etc.. One can use free trial version for knowledge the import using this Free OST to PST converter Tool. It OST to PST migration is a window OS compatible tool and fully run on Window OS.
1- Split large PST file size.
2- Messages filtering option.
3- Batch Conversion option.
4- NO File Size limitation.
More info- How to convert ost to pst manually