You can downloadthe freeware inQuit OST to PST Converter application that effectively migrate
entire Outlook items from OST files like - emails, contact, draft, task,
attachments, calendar, image, deleted emails, etc. into Outlook PST file
without any data loss issues. It has interactive and easy to handle GUI for all
Outlook customers. This converter software protect the originality of OST file
mailbox folder hierarchy and data integrity after the conversion into PST. It
is workable with any version of Microsoft Outlook including – 97/ 98/ 2002/
2003/ 2007/ 2010/ 2013/ 2016 and 2019 (32 bit & 64 bit). You can
effortlessly perform bulk conversion of multiple OST files to PST file without
Microsoft Outlook. It directly convert OST file into Office365, Live Exchange
and other cloud applications. 
Read More: https://www.inquitsoftware.com/en/ost-to-pst-converter.html
