MacXTools

MBOX Converter for Mac

Experts rated MBOX converter software to convert MBOX file into 10 popular formats in just a few clicks. It allows users to convert emails of MBOX, MBX, MBS, SBD and MSF files created by Apple Mail, Thunderbird, Entourage, Eudora and more than twenty other email clients. No email client installation required and original MBOX file stays safe.

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No registration and no upload. MBOX converter processes every mailbox on local hardware. See the screens first.

  • Five MBOX variants
  • No mail client needed
  • No file size limit
  • Runs entirely offline
Supported Sources

Mac MBOX Converter Supports All Email Clients

  • Apple Mail
  • Mozilla Thunderbird
  • Entourage
  • Eudora
  • PocoMail
  • Postbox
  • SeaMonkey
  • Opera Mail
  • Netscape
  • The Bat!
  • Evolution
  • Claws Mail
  • Becky Internet Mail
  • Spicebird
  • PowerMail
  • Mulberry
  • KMail
  • Alpine
  • Google Takeout
  • Google Vault
Features

Features of Mac MBOX Converter

Mac MBOX file converter preserves email content, folder structure and meta properties throughout the MBOX conversion process.

Parse MBOX in Read Only Mode

MBOX converter perform all operation in read only mode to maintain the original files. The mailbox carries the same bytes and the same modified date afterwards, which a digest taken either side will confirm.

Supports Five MBOX File Extensions

Mac MBOX file converter allows users to browse MBOX, MBX, MBS, SBD and MSF through one interface. A mailbox carrying no extension at all loads the same as one named with .mbox.

Maintains Folder Hierarchy

Mac MBOX converter is capable to manage folder order of the source directory at the destination. SBD folders holding subfolders several levels deep are rebuilt in the same shape.

Save MBOX Files with All Attachments

The software is capable to manage embedded attachments in their native formats. Attachments are pinned, appended or written out separately rather than flattened into the email body.

Maintains Headers and Meta Properties

MBOX converter software writes the full Internet header block into the output on request. It keeps the routing record and message metadata available for examination.

Merge Multiple MBOX Files

Create Single File combines every input into one output. Switched off, each mailbox produces its own file, which suits mail belonging to several people.

Split Resultant PST File

The software divides a PST result across several files at a chosen threshold. A 281 MB mailbox and a 20 GB Takeout download behave the same way at the destination.

No MBOX File Size Limitation

MBOX file converter tool does not impose any file size limitation for conversion. The software easily performs bulk conversion of MBOX files and enables all saving options.

Convert MBOX without Any Email Client

MBOX converter is a standalone software for convert MBOX mailbox files. It is a self-processing utility, so Thunderbird and Apple Mail can be absent from the Mac entirely.

100% Secure Offline Conversion

The whole conversion process happens on the local machine. It ensures data security and integrity, with no upload, no account and no external service contacted.

5+ Naming Convention Options

MBOX converter software offers a naming convention feature to save converted emails in the desired way. Subject, Subject+Date, sender and auto increment are among the options available.

Writes a CSV Conversion Report

MBOX converter records counts and status for every mailbox processed. It is the record a reviewer asks for once emails have been handled for disclosure.

Screenshots

Mac MBOX Converter Working Steps

Steps to convert multiple MBOX files on Mac OS using the MacXTools MBOX converter software.

Mac MBOX Converter with one mailbox loaded and its size shown in megabytes
Step-1 One container taken in through Add File(s), reported at 45.67 MB against its full path. The instruction line at the top carries a standing notice about the Eudora and PocoMail attach folder. Next moves to the export stage.
Add File picker in the Mac MBOX Converter with File Format set to All Files
Step-2 Add File(s) opens a picker with File Format set to All Files rather than to a single extension, because a mailbox may carry .mbox, .mbx or nothing at all. Client folders sit alongside each other in the same directory.
Add Folder picker in the Mac MBOX Converter selecting a directory of mailboxes
Step-3 Add Folder(s) selects a directory instead of a mailbox. Highlighting the folder and pressing Choose hands the whole tree over, which is the mode that matters once a set runs past a few files.
Load list in the Mac MBOX Converter showing nested mailbox paths with individual sizes
Step-4 A queued directory resolves into every mailbox found inside it, each on its own row with the full nested path. Sizes run from 0.02 MB to 281 MB in the same list. The clearing buttons become available as soon as the list is populated.
Advance Settings

Controls & Filters in MBOX Converter

Mac MBOX converter software allows users to customise the output file as per requirements.

Browse MBOX Files into Software Interface

Two buttons feed the list. Whichever button users press decides whether the software takes one mailbox or a whole directory tree.

  • Add File(s). Takes one MBOX, MBX or MBS mailbox at a time.
  • Add Folder(s). Takes a directory and collects every mailbox inside it, including those held in nested subfolders.
  • Remove and Remove All. Take a single entry out or empty the list completely. Neither becomes available while the list is still blank.
  • Path and size. A Size(MB) reading accompanies each path in the list.
Add Folder picker in the Mac MBOX Converter

Accepts Any Extension or None at All

MBOX has no single filename convention, which is why the picker filters on All Files instead of on one extension.

  • All Files filter. The software lists a mailbox named Inbox with nothing after it alongside one named Inbox.mbox.
  • Five Variants: MBOX converter recognises MBOX, MBX, MBS, SBD and MSF through the same dialogue.
  • Client folders. Directories written by different applications sit side by side and enter in the same pass.
  • Attach folder. Eudora and PocoMail keep attachments beside the mailbox, so that folder travels with the mbx file.
File Format set to All Files in the Mac MBOX Converter picker

Reports Every File and Its Size

MBOX converter software reports back everything it accepts, with the numbers needed to judge the batch before Next is pressed.

  • Selected Path. Full nested paths keep several mailboxes called Inbox separable from one another.
  • Size(MB). Readings of 0.02 MB and 281 MB appear side by side in the same batch, both visible ahead of the export.
  • Scrollable list. Dozens of mailboxes drawn out of one directory remain reviewable from top to bottom.
Load list of nested mailbox paths with sizes in the Mac MBOX Converter
Export Options

Convert MBOX File in 10 Formats

Mac MBOX converter software exports MBOX files into various file formats: mail containers for importing, message formats for single items and document formats for reading without any email client.

FormatOpened byThe case for it
PSTMicrosoft Outlook on Windows and on MacAn Apple Mail or Thunderbird mailbox has to become a working Outlook data file
PDFPreview, Acrobat, any document systemMessages become paginated documents for filing, review or printing
EMLThunderbird, eM Client, most desktop clientsOne file per message, which a script or an indexer can process
EMLXApple MailThe destination is the Apple Mail store on a Mac rather than an import dialogue
MSGOutlook and Exchange mailboxesIndividual messages stay openable in Outlook with no import step first
HTMLAny web browserThe recipient reads the mail with no client installed and nothing to install
MHTAny web browserImages travel inside the file rather than beside it in a folder
TXTAny text editorPlain text is what an indexer, a script or a search tool works with
CSVNumbers, Excel, any importerMessage fields are wanted as rows rather than the messages themselves
JSONAny language or data pipelineThe mail is feeding an application rather than a person
PrintA printer or print to PDFA few messages are wanted on paper with no file kept afterwards
What this build does not write

Output is written to disk in every case. Uploading straight into a Gmail, Office 365, Yahoo Mail or IMAP account is outside what this build does, although a number of competing products advertise it, so the specification deserves a check before any purchase. Reaching Outlook or the Microsoft import service means going through PST.

Users

What the MBOX Converter is Used For?

What each kind of user requires from an MBOX converter tool for Mac.

IT Administrators

Depends on the folder walk. A profile directory holds mailboxes several levels down inside SBD folders. Pointing at the top of it collects them all without any of them being named.

Migration Teams

Depends on variant coverage. One handover commonly mixes MBOX, MBX and MBS because it came off several machines. All three enter through the same dialogue.

Legal and eDiscovery Teams

Depends on the PDF output and the header block. Mail leaves the mailbox as paginated documents with routing detail written underneath, which is what a reviewer works from.

Archiving and Compliance

Depends on the CSV log. Counts and status are recorded for every mailbox processed, which answers the question of what was handled long after the conversion itself.

Managed Service Providers

Depends on Create Single File being switchable. Left off, each mailbox produces its own output, so two clients processed on the same afternoon never end up in one container.

Individual Mac Owners

Depends on the file simply opening. Simply browse a Takeout download or an old Eudora mailbox, click a saving option and hit Export. Nothing has to be configured beforehand.

Try MBOX Converter Free on Mac OS

Try it free today: verify software features before purchasing the full version. Each mailbox loaded yields twenty five emails, with all saving options and advanced settings unlocked. An unreadable or truncated container therefore declares itself at this stage rather than later.

Download free trialDirect .dmg, no form or Buy now$39.00 one time
Use Cases

When to Use Mac MBOX Converter

Open a Google Takeout Download

Converts the single large mailbox a Takeout or Google Vault export produces into PDF for reading or PST for Outlook. The archive is complete on arrival but nothing on the Mac opens it as it stands.

Move Apple Mail Data to Outlook

Converts an Apple Mail or Thunderbird mailbox to PST, the only shape Windows Outlook imports. A split threshold keeps each resulting data file under a workable size.

Produce MBOX Emails for Legal Review

Converts to PDF with the header block written into the output, so routing detail stays readable once messages have left the mailbox for disclosure.

Read a Retired Client Mailbox

Converts mail left behind by Eudora, PocoMail, Netscape or Opera Mail without the original application. Those products stopped years ago and their mailboxes did not.

Conversion Steps

Convert MBOX File in Three Steps

Browse MBOX File in Software

Add File: Click Add File to browse a single or selected MBOX files into the Mac MBOX converter interface. Add Folder: Choose this option to browse the root folder that is containing all MBOX files, nested levels included.

Apply Filters and Settings

A From and To date restricts the export to one window. Folders that are not wanted come out of the tree. Merge behaviour, the PST split size and the naming pattern all live under Advance Settings.

Select The Format and Export

Pick one of the ten saving options, click the destination folder and then start the conversion. MBOX converter software writes a CSV log carrying counts and status once the export completes.

Specifications

MBOX Converter for Mac - System Requirements

What the machine needs, plus the five mailbox variants this MBOX converter software opens.

Name
MacXTools MBOX Converter
Version
v10.0
File size
158 MB
Licence
One time purchase, no subscription
Trial limit
25 emails from every MBOX file loaded
Disk space
200 MB free
RAM
4 GB
Processor
Apple Silicon or Intel
Platforms
macOS 12 Monterey, 13 Ventura, 14 Sonoma and 15 Sequoia
Reads
MBOX, MBX, MBS, SBD and MSF, with a file extension or without one
Prerequisite
A Java runtime. Where it is missing the application reports it on launch

Screens Software guide Licence agreement Refund policy

Installation

Installation and First Run

Known causes and their fixes before the first MBOX conversion process. None needs a support ticket.

01

Java Runtime Error on Launch

The Mac MBOX converter needs a Java runtime on the machine. With none installed the application says so at startup and goes no further. Putting the runtime on the machine resolves it. A Mac that has never needed Java before is the usual place this comes up.

02

Attachments Missing from Eudora or PocoMail

Those two applications store attachments outside the mailbox in a folder named attach. The load screen carries a standing notice about it. Keep that folder beside the selected mbx file. Moving the mbx on its own leaves the references pointing at files that are no longer there.

03

MBOX Converter Finds Only MSF Files

An MSF is a Mail Summary File holding headers and an index with no message bodies. Where a handover contains nothing else, the mail has not been supplied. The extensionless MBOX files alongside are what the software needs.

Common Questions

Frequently Asked Questions

Will the MBOX converter open a file with no extension?

Yes. Thunderbird writes a mailbox with no extension while Apple Mail adds .mbox to the folder it exports. Both are the same container underneath. The file picker is set to All Files rather than to a single extension for exactly this reason, so a mailbox named Inbox with nothing after it loads the same as one named Inbox.mbox.

Which email clients does the Mac MBOX converter cover?

More than twenty. Apple Mail, Thunderbird, Entourage, Eudora, PocoMail, Postbox, SeaMonkey, Opera Mail, Netscape, Evolution, Claws Mail and The Bat! among them, plus Google Takeout and Google Vault downloads.

The client that made this file is gone. Does that matter?

No. This is a standalone Mac MBOX converter tool. A mailbox from a machine scrapped years ago opens the same way, because the software reads the container rather than asking the original application to hand the mail over.

What are the trial limits of the MBOX converter software?

Twenty five emails from every MBOX loaded. Every format and every setting is available, so the output at that stage matches what a paid licence produces. A truncated or unreadable mailbox shows itself here rather than after purchase.

What happens to attachments from Eudora or PocoMail?

Those two store attachments outside the mailbox, in a folder named attach. Keep that folder beside the selected mbx file and the attachments come across. Move the mbx on its own and they will not, since the references inside it point at files that are no longer there.

I only have MSF files. Where is the mail?

Not in them. An MSF is a Mail Summary File holding headers and an index with no message bodies. The mail is held in the extensionless MBOX files alongside. Those are what the software needs.

Can the MBOX converter merge several mailboxes into one file?

Yes, through the Create Single File option. Switched off, every input produces its own output file, which suits a batch where the mail belongs to several different people.

Does the MBOX converter tool modify the source file?

No. Reading is all it does to the source. Output goes wherever you nominate and the original keeps its bytes and its modified date, which is checkable with a digest taken either side of the conversion.

How large an MBOX file can the software handle?

No cap is stated on the size of a mailbox or on how many are converted at once. A Takeout download running to several gigabytes takes longer to process and nothing more.

Can a converted mailbox be uploaded to Gmail or Office 365 directly?

No. Conversion ends with a file on disk. Putting that file into a live account is a separate action you take afterwards. Outlook and the Microsoft import service both accept PST, which is why that format is the usual route. Software advertising a single click upload is still doing these two things one after the other.

Does this run on Windows too?

Not this build. The MBOX converter for Mac is macOS only. Where the mailbox already lives on a Windows machine, converting it there avoids an unnecessary copy across.

Try MBOX Converter Now on Mac OS

Twenty five emails per mailbox establish two things. The first is that the MBOX converter for Mac opens the container. The second is that the output behaves at the far end. The demo holds back no format and no setting, so what it writes is what a full licence writes.

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