Corbett
Corbett PST to MBOX Converter turns Outlook PST files into MBOX, in bulk or for chosen folders. The tool keeps full data integrity and folder hierarchy, sets no file size limit and detects the email server and port by itself. EML, PDF, HTML, TXT, vCard, ICS and CSV output is available, along with IMAP upload to Office 365 and Gmail. Try the free demo first.
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Nothing about the conversion leaves this PC. Corbett never sees the PST.
Free demo, scanned clean on VirusTotal and a 30-day money-back window.
Lifetime licence from $99 Demo converts 10 items
MBOX facts
MBOX packs a folder's mail into a single file that Thunderbird, Apple Mail and many other clients import. A PST stays locked in Outlook. This converter moves the data over and leaves the source as it was.
Retained in MBOX
Accepted PST files
Extra outputs
Not carried into MBOX
Why PST Data Goes to MBOX
Teams leave Outlook for Thunderbird or Apple Mail, or archive mail in an open format. MBOX is the format those clients import, and PST is not. A bulk conversion saves hours compared with moving mail by hand.
Core features
Install, load PST files, select folders and export to MBOX.
Install
Run the installer and open the PST to MBOX tool on Windows. The software then waits for a PST file.
Folder selection
Add the PST files, then tick the folders to convert. Unticked items stay out of the MBOX output.
Message preview
Tick boxes narrow the data to emails, contacts, calendars, tasks, journals or notes, and a date or search word finds specifics.
Selective backup
Naming options use the name, subject, From, To or Cc of the message, so output files are easy to find later.
Output options
Select MBOX in the export list and click Export. The PST data lands in MBOX files at the chosen path.
Before converting
Three quick checks make the output clean.
Source file
Keep a PST backup
Close Outlook, then back the PST up on a safe drive. The original stays untouched during conversion.
Item scope
Files or entire folders
Convert all PST files in bulk, or select folders only, which keeps the MBOX output small and focused.
Destination
Set the export options
Options cover opening the folder after export, skipping greyed out folders, creating empty folders, deleting old folders and including email headers.
Handling the source PST inside Outlook is covered in Open PST file and Import PST to Outlook.
Free demo
Try the PST to MBOX Converter Free
The trial edition handles 10 messages or folders. Load the sample MBOX into Thunderbird before paying.
Download free demoBefore purchase
Outlook has no PST to MBOX export, and moving files one at a time is slow. See how the manual route compares with the tool below.
| Task | Manual path | Tool |
|---|---|---|
| Cost | Free | $99 one time |
| One email | Save in a mail client | Works too |
| MBOX file output | Not offered in Outlook | Folder mail in one file |
| Large PST files | Size limits get in the way | No size limit |
| Folder hierarchy | Often reshuffled | Same as the source |
| Output naming | Fixed names | Name, Subject, From, To, Cc |
| Search | Basic search only | Name, Subject, To, From, Date |
| IMAP upload | Not offered | Office 365, Gmail and more |
Only the green row can be done by hand.
Attachments alone are available through Extract attachments from PST file .
Specifications
Download details
System
Supported editions
Windows 10 in 32-bit or 64-bit and every older edition, 8 and 7 included.
Start with Run as Administrator.
Corbett has built Windows email utilities since 2020. The support team handles setup questions and early issues.
Working process
Prefer reading? The Open MBOX file post shows what the finished MBOX file holds.
Common questions
Steps, integrity, bulk jobs and file limits.
Download and launch the tool, then add the PST files. Tick the files or folders needed, click Export and select MBOX.
Yes. The application guarantees 100% data integrity, and a 30 days money-back guarantee covers any shortfall.
Yes. The application exports PST files to MBOX in bulk. Select the files or folders and go ahead.
No. The tool handles terabytes of data easily.
Yes. The trial edition handles 10 messages or folders.
Yes. Export options reach Gmail, Yahoo, AOL, Hotmail, Outlook, iCloud and IMAP mail servers.
Yes. Email addresses, contacts, attachments, phone numbers and photos can be taken out alone.
Yes. A scan finds the mail server address along with the port.
Output file names can be built from Name, Subject, From, To or Cc values of the message.
Windows 10 in 32-bit or 64-bit and every older edition, 8 and 7 included.
Plan on 512 MB of RAM at the least (1 GB preferred), with 100 MB left free on the hard drive.
Attachment formats such as doc, pdf and xls are supported.
Personal activates 2 PCs or laptops, while Business activates 10 and Enterprise is uncapped.
Electronically, after payment.
Yes. Refunds are honored for 30 days after purchase.
Step by step
Posts on getting into PST files and putting MBOX mail to work.
Get into the PST
Use the MBOX file
Moving the mail on
Hosted account moves use the Email Migration Tool . Server cutovers use the IMAP Migration Tool. Other formats are covered in the email converter tool. Broken archives belong with the email recovery software. A viewer for mail files can be found in the email viewer software. Same family: MBOX Converter and PST File Converter Tool. Also see the MBOX to PST Converter, MBOX to EML Converter, OST to PST Converter, Thunderbird Backup Tool and Office 365 Backup Tool.
User testimonials
Ratings from 373 users who sent Outlook PST data to MBOX through Corbett.
Collected across 373 reviews taken from portals and email, unedited.
I had been looking for a switch from PST to Outlook. I had been looking for ways to convert them to MBOX and keep it ready for export. Then, I came across the CorbettSoftware. It resolved all my problems and I was happy to make the right choice.
The Corbett Convert PST to MBOX is a useful tool for converting PST files without any hassles. I had tried converting multiple PST files into MBOX format. It was easy to do with just a few simple steps. In a nutshell, I would say that it is a wonderful tool.
It is an amazing tool with a fast conversion rate and easy to use interface platform. I didn't face any problem at all. I am from a non-technical background and my experience was satisfactory. Will suggest this software to all of my friends for future use.
Get started
Run the demo on a PST copy and test the MBOX in a client. A licence costs $99 once, and 30 days of refunds apply.
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47.6 MB · Windows 10 and below · 30 days money back