A read-only inspection workflow is useful when reviewing Outlook PST data for auditing, compliance checks, archival validation, or migration preparation. The objective is to examine stored mailbox information while minimizing the possibility of unintended changes to the original data file. The Cigati Outlook PST File Viewer Tool enables users to open compatible PST files and inspect accessible emails and folder contents through its viewing interface. This allows technical teams to review available mailbox records without requiring a complete import into Microsoft Outlook. For workflows that require strict preservation, the source file should be protected against modification, and the application's read-only behavior should be verified before use. Such precautions help maintain data integrity during inspection and support controlled mailbox review procedures.