Recently use me well third-party tool of Outlook ost to pst converter open source from Vartika software. This ost to pst converter free tool easily works to transfer emails, mails from OST file into PST file format. It is the quickly conversion Emails properties like- To, Bcc, Cc, Subject, Date, from, and etc. in new Outlook PST file with after recovery Outlook OST file.

1- Export OST to PST, Office 365, Gmail, Zimbra, Gmail, EML, EMLX, vCard, ICS, MSG, Live Exchange server, MBOX and etc.

2- Split large PST file in small parts.

3- Filters all types messages.

4- Convert selective items from OST to PST

Outlook ost to pst converter