free unlimited ost to pst converter online from KDETools Software. It is one of the most reliable applications for this purpose. OST file converter tool is capable to convert unlimited Outlook OST mailbox items including inaccessible data. Outlook OST to PST Export tool to converts OST file data into Outlook PST file, HTML, vCal, vCard, EMLx, MBOX, EML MSG & CSV file types within a few mouse clicks. With the help of this software, users can split PST files into smaller PST files.
best ost to pst converter