If you want to extract & recover contacts from OST files free, so I recommend the most effective and powerful tool is known as eSoftTools OST to PST converter software. It is easy to use and one of the best tools compared to other company software. It extracts contacts, emails, calendars, and more mailbox items from OST files to PST and numerous formats such as EML, EMLX, Yahoo Mail, Gmail, Office365, HTML, MSG, and more. Check the free demo version before purchasing the software to know more about the software.
Read More: Extract & recover contacts from OST file free
Read More: Extract & recover contacts from OST file free