Drop .mbox file or click to select
All attachments preserved • Up to 10GB
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Split Complete
All data preserved • Ready to download
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About This Tool
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100% Browser-Based
All processing happens in your browser. No data is uploaded to servers.
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Complete Data Preservation
All attachments, images, and binary data are kept intact.
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Multi-GB Support
Handles large Mbox files up to 10GB using smart memory management.
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Privacy First
No data collection. No tracking. Everything stays on your computer.
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Works Offline
Once loaded, this tool works completely offline.