You should utilize a professional recovery program to convert your deleted OST files if you are seeking for the finest Converter.

About recovery tool

This program is compatible with all versions of Microsoft Outlook (from 97 to 2019), as well as Windows. You may use this program to convert OST files to PST, MBOX, EML, EML, MSG, Yahoo, Gmail, Office 365, and HTML.

How to choose correct one?

Large projected PST archives can also be readily partitioned. Which one to chose? Learn it here.