If you need to read OST emails and create PDF copies, you can use a mailbox viewer that supports both viewing and exporting. Start by loading the OST file and checking its folders and messages. Preview the required emails first, then select the data you want to save. Keeping the original OST file unchanged is recommended so the source data remains available for reference.

The Aryson OST Viewer Tool supports viewing OST mailbox data and provides export options for saving selected email content in formats such as PDF. You can browse folders, open messages, review attachments, and select the required mailbox items before exporting. This can be useful when you need readable copies of specific emails without depending on the original Outlook installation.

To Open Outlook OST File  and export emails to PDF, load the OST file, locate the required messages, select them, and choose PDF as the output format. After exporting, open the generated PDF files and verify that the expected email information is available. Keeping the original OST file safely stored allows you to refer back to the source data whenever required.