Format reference
MBOX Format Hub
MBOX (.mbox) files group multiple email messages into a mailbox archive using Unix-style message separators. Use sample .mbox files to test mailbox import, multi-message parsing, threading logic, and archive review workflows.
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application/mbox
Related Formats in Document
MBOX Related Formats
Format Strategy Links
MBOX Format Guides
Implementation Notes
MBOX Implementation Notes
Use the manifest endpoint for deterministic fixture selection in CI, then validate MIME/type detection against actual parser output.
If this format appears in multiple categories, prefer category-specific hub pages to keep test assumptions aligned with real usage.