Download and install the most popular and famous recovery tool that's named eSoftTools OST to PST converter software on your computer's systems. Because its software is always able to recover all mailbox items such as calendar, inbox, sent box, Outbox, contact, address book, and attachments from OST files wihtout losing any data. It provides a bulk conversion option where users can easily convert and recover bulk OST files at one time.
More Info - https://esofttools.mystrikingly.com/blog/how-to-recover-emails-from-outlook-ost-file
