Compare
Why choose Mbox Viewer?
How it stacks up against Electron- or Java-based MBOX readers and generic utilities.
| What matters | Mbox Viewer | Electron / Java readers | Generic utilities |
|---|---|---|---|
| 50 GB+ files | Yes, streaming | Often crashes | Rarely |
| Instant re-open | < 1 sec (index) | Re-parses each time | Varies |
| Memory usage | < 600 MB | High | Medium |
| Native macOS | SwiftUI + AppKit | Bundled browser | Depends |
| Gmail labels | Yes | Sometimes | No |
| 100% offline / private | Yes, read-only | Varies | Varies |
| Export to EML/CSV/text | All + attachments | Limited | Limited |