ostpst – https://www.shoviv.com/blog/how-to-convert-ost-to-pst-with-an-easy-way/

Do you have OST files or want to convert OST files? If yes, then I would suggest you use Shoviv OST to PST Converter tool. It has a secure and fast conversion process that makes it easy to convert OST files into PST, EML, and MSG formats. It allows the users to repair corrupted OST files and restore deleted items from OST files. To check out its working process, one can download a free trial version as well.

Get More Info: Import OST to Outlook