Cross-client database migration always brings up significant challenges regarding metadata preservation, folder hierarchy mapping, and encoding integrity. Since MBOX stores messages in a single continuous text stream while PST relies on Microsoft’s proprietary structured database format, direct manual imports often lead to corrupted header attributes or missing MIME attachments.
For critical email archives, running a pre-conversion integrity check and validating checksums post-migration is essential to ensure that timestamps, inline assets, and nested folder structures remain completely intact during the format translation.