Corbett
Corbett Free MBOX Viewer reads MBOX files from any source and lists emails with attachments and meta data in its preview panel. Four preview modes plus quick and advanced search cost nothing, and folder mode loads many MBOX files together. Pro exports MBOX data to HTML, PDF, PST, EML and 100+ IMAP clients.
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MBOX files open on this PC. Corbett never sees the mail.
Free demo, scanned clean on VirusTotal and a 30-day money-back window.
Lifetime licence from $99 Demo exports 10 MBOX files
MBOX viewer facts
An MBOX file is plain text for a mail client, and outside one it is hard to read. This viewer lists every message, shows attachments and meta data, and costs nothing to use.
Free MBOX Viewer output
Readable MBOX sources
Free tier and Pro tier
Pro tier extras
Why Teams Need a Free MBOX Viewer
MBOX files pile up from old mail clients, Takeout downloads and Vault exports. Opening one without a compatible client is slow, and a viewer shows the mail and its meta data in seconds, at no cost.
Core features
Install the tool, load MBOX files, preview mail, then search.
Install
Download the viewer, install it and launch it on a Windows PC. It needs no mail client alongside.
Folder selection
Go to Open and select MBOX from the Email Data Files list. Choose Files loads single files while Choose Folder loads a full directory at once.
Message preview
Select any message and the preview panel opens it. Switch between modes to see the body, the properties, the header and the code.
Selective backup
Two search types narrow the message list until the wanted mail shows.
Output options
The free viewer exports 10 MBOX files in demo mode. Pro exports unlimited files to PST, EML, PDF, HTML and IMAP clients.
Before opening
Three quick checks make reading smooth.
Source data
Collect the MBOX Data
Put the MBOX files together in a folder on the PC. The viewer reads them and never edits a file.
Load scope
Files or an entire folder
Load a single file, a few files or a full folder of MBOX data. Choose Folder spares the work of adding files separately.
Edition
Free MBOX Viewer or Pro
Viewing stays free. Pro lifts the 10 file export limit and adds more targets, including desktop and cloud clients.
Moving MBOX mail into clients is covered in Import MBOX to Thunderbird account and Import MBOX to Gmail.
Pro demo
Try the Free MBOX Viewer Now
The demo exports 10 MBOX files to any format or client. The Free MBOX Viewer reads without limits.
Download free demoManual or viewer
MBOX files open only in compatible mail clients. Check how a manual route measures up to the viewer below.
| Task | By hand | Viewer |
|---|---|---|
| Cost | Free | $99 one time |
| One MBOX file | Import into a client | Works too |
| Hundreds of files | Imported one by one | Folder mode |
| Message header | Often hidden | Header mode |
| Raw and hex data | Not shown | Raw and hex modes |
| Search | Client search only | Quick and advanced search |
| Mail client | Needed for every file | Not needed |
| Cost | Client licence | Free of cost |
Manual reading copes with the first row only.
Another way to open MBOX without a viewer sits in Open MBOX file .
Specifications
Download details
System
Supported editions
Windows 11, 10, 8 and 7, plus every lower edition in 32-bit and 64-bit.
Right click the tool and run it as Administrator.
Corbett has built Windows email utilities since 2020. Questions about setup go to the support team.
Working process
Prefer text? The Open MBOX file post shows another way in.
Common questions
Steps, folder mode, preview modes and the Pro edition.
Download the viewer and launch it on Windows. Use Open, Email Data Files and MBOX, then Choose Files or Choose Folder. Every file shows a preview with its attributes. Change preview modes and narrow results with Quick and Advanced Search.
No. Add an entire folder of MBOX files. The number of files has no limit.
Yes. Pro exports to 20+ platforms and formats, including PST, EML, PDF, HTML and IMAP clients.
Four modes show a message: body, header, hex digits and raw source.
Yes. It supports all versions of Windows, from Windows 11 down to older editions.
Yes. The interface is simple and interactive, and beginners manage it without trouble.
No. The viewer opens MBOX files alone, with no compatible mail client installed.
Eudora, PowerMail, Netscape, Becky! Internet Mail, Entourage, SeaMonkey, Google Vault and Google Takeout, among others.
It narrows mail down by a keyword or by several keywords.
It narrows mail down by email fields like Subject, Content and CC.
Yes. Download and use it at no cost. The demo exports 10 MBOX files, and Pro removes that limit.
PST, EML, MBOX, PDF, HTML, vCard and CSV, plus Gmail, IMAP, Office 365 and Thunderbird.
Payment unlocks an email that holds the link to download and the activation key.
Windows 11, 10, 8 or 7 with 100 MB of free disk, 4 GB of memory and a Pentium processor at 1 GHz.
Yes. Refund requests from Pro buyers are accepted for 30 days.
Step by step
Posts on reading, moving and tidying MBOX mail.
Move MBOX mail into
Hosted account moves use the Email Migration Tool . Server cutovers use the IMAP Migration Tool. More formats sit with the email converter tool. Broken archives belong with the email recovery software. Free reading of other mail files happens in the email viewer software. Same family: Free PST Viewer Tool and Free Google Takeout Viewer. Also see the MBOX Converter, MBOX to PST Converter, MBOX to EML Converter, MBOX to PDF Converter and Email Migration Tool.
User testimonials
Scores from 62 users who read MBOX mail with Corbett.
Collected across 62 reviews collected from portals and emails, kept as sent.
I had over 300 MBOX files that I needed to access. Since I don’t use any MBOX compatible email client, the task seemed impossible to accomplish. Then, a friend of mine recommended this Corbett MBOX Viewer Software to me. I used this software to access and view my MBOX files and it provided me with a smooth and hassle free experience. This software is highly reliable. I even exported my MBOX files to my current email client for further use.
Viewing MBOX files without a compatible email client is not an easy task. But thanks to Corbett Free MBOX File Viewer Tool for making this extremely easy. The Message Header preview mode of this tool is incredible. It displayed the entire detailed routing information of the selected email message. Overall, this free Windows MBOX Reader is a great software for everyone.
Get started
Start with Free MBOX Viewer at no cost, then move to Pro for unlimited export. Pro costs $99 once and carries a 30 day refund promise.
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47.6 MB · Windows 11 and below · Free viewer