When Exchange Server crashes or Outlook profile corruption occurs, OST files often become inaccessible. In such situations, manual recovery becomes difficult. PDS OST to PST Converter Software
 provides a reliable automated solution to recover and convert OST mailbox data into PST format.

The software supports:

MS Exchange OST recovery
Outlook OST to PST conversion
Recovery of deleted emails
Conversion without Outlook installation
Batch conversion of OST files
OST Recovery Tool also Convert OST Data to PST

The OST Recovery Tool scans corrupted or inaccessible OST files thoroughly and extracts mailbox items with complete accuracy. It ensures safe recovery of:

Emails
Contacts
Calendars
Tasks
Notes
Attachments

The recovered mailbox data can then be saved into PST format for direct import into Microsoft Outlook.

https://blog.perfectdatasolutions.com/ost-to-pst-converter-software-2/