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>log in to comment- John Merritt· 1y ago
I had a bunch of OLM files from my old Mac that I needed to open in Thunderbird on my new PC. Nothing seemed to work — either the formatting got messed up or attachments were missing. Then I tried Softaken OLM to MBOX Converter. Honestly, it fixed my issue; the tool effortlessly converted all my OLM files into MBOX format. The software is super simple to use, and all my emails came through perfectly.
More Emails tools →74 free dev tools →
Converts Mac Outlook OLM files to universal MBOX format for use with many email clients.
- for
- Users needing to migrate Outlook for Mac emails to other clients, on Windows.
- pricing
- freemium · free trial
Key features
- Full mailbox preview — Shows complete folder tree, email bodies, headers and attachments before export.
- Preserve hierarchy & metadata — Keeps folder structure and email properties (to, cc, bcc, dates, subject) intact.
- Single or multiple MBOX output — Create one consolidated MBOX or separate files per Outlook folder.
- Date-range and filter options — Export only messages that match selected date ranges or other criteria.
- No size limits — Handles any size OLM file without restrictions for healthy archives.
- Standalone Windows app — Runs on Windows without requiring Outlook or Thunderbird installed.
Use cases
- Migrate Outlook 2019 Mac mail to Thunderbird on Windows
- Archive old Mac Outlook mailboxes for long-term storage
- Move Outlook contacts and calendars to Apple Mail via MBOX
- Extract specific date-range emails from a large OLM archive
Softaken OLM to MBOX Converter vs alternatives
Softaken OLM to MBOX Converter | Shoviv EML Converter Tool | Softaken OST to MSG Converter | |
|---|---|---|---|
| Best for | Simple OLM-to-MBOX conversion | EML file conversion | OST-to-MSG conversion |
| Pricing | Freemium | Subscription | One time fee |
| DevHunt upvotes | 0 | 0 | 0 |
| Launched | Jan 2026 | Jan 2026 | Jan 2026 |
- Softaken OLM to MBOX Converter vs Shoviv EML Converter Tool: Converts EML files to various formats, not OLM to MBOX
- Softaken OLM to MBOX Converter vs Softaken OST to MSG Converter: Converts Outlook OST files to MSG, a different Outlook format
Softaken OLM to MBOX Converter FAQ
Do I need Outlook or Thunderbird installed to use the converter?+
No. It is a standalone Windows application that does not require any other email client.
Can I export each Outlook folder to its own MBOX file?+
Yes. You can choose single consolidated MBOX or separate MBOX files per folder.
Will attachments and inline graphics be preserved?+
Yes. Emails, attachments, inline graphics and all metadata are kept intact.
Is there any file-size limitation for the OLM file?+
No. The tool has no size restrictions for healthy OLM archives.
What does the free demo allow?+
The demo scans and previews all items but only exports 10-25 items per folder; full version is unlimited.
Summarized by DevHunt from softaken.com · Sep 28, 2026. Details may change; check the official site.

Softaken OLM to MBOX Converter
Shoviv EML Converter Tool
Softaken OST to MSG Converter
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