17 tools Universal on Apple Silicon and Intel

Convert, Back Up and Recover Mac Email Data

Seventeen tools that open PST, OLM, MBOX and EML files on macOS without Outlook. Every one reads the source read only and runs on your own Mac.

  • Apple notarized
  • Free trial
  • macOS 12+
17
Mac tools
5
Tool categories
16
Output formats
30
Day refund window
Apple Silicon Notarized Read only source No Outlook needed
Compatibility

What it opens and what it writes

Every converter, backup tool and extractor works the same way. Read a mail file or sign into a mailbox, write it somewhere usable.

Files it reads

MBOX
Apple Mail, Thunderbird, Entourage, Eudora, SeaMonkey, Postbox, Opera Mail, Claws Mail, Evolution, Google Takeout and Google Vault exports
PST and MSG
Microsoft Outlook on Windows
OLM
Microsoft Outlook for Mac
EML and EMLX
Apple Mail, Outlook Express, Windows Live Mail
PDF
Extraction and repair

Mailboxes it signs into

Google
Gmail and Google Workspace, formerly G Suite
Microsoft
Office 365, Microsoft 365, Exchange and Outlook.com
Apple
iCloud Mail
Webmail
Yahoo Mail, AOL, Zoho Mail, Yandex Mail, Rediffmail
Anything else
Any server that speaks IMAP

Formats it writes

Documents
PDF, DOC, DOCX, RTF, HTML, MHTML, TXT
Mail files
MBOX, PST, EML, EMLX, MSG
Contacts
CSV and vCard
Calendars
ICS
Live mailboxes
Gmail, Office 365, IMAP and Thunderbird

Metadata is carried across on every route. Sender, recipients, timestamps, message headers, read status, folder hierarchy and attachments all survive the trip. Tested against macOS 12 Monterey through macOS 15 Sequoia on both Apple Silicon and Intel.

Why these tools

Built for files nothing else opens

A mailbox file is often the only copy left. These tools are built around that, not around speed benchmarks.

01

No Outlook needed

PST, OLM and MSG files open directly on macOS. You do not need Outlook installed, licensed or even present on the machine.

02

Source stays untouched

Nothing is written back. Output lands in a separate file you choose, while the file you pointed at keeps its original bytes and timestamps.

03

See it before you pay

The trial reads your actual file and shows you what is inside. You find out whether it works on your data before money changes hands.

04

Runs on any Mac

One universal build covers every Mac from macOS 12 onward, Apple Silicon or Intel. Signed with an Apple Developer ID and notarized, so Gatekeeper lets it through.

On-device by default

Your mailbox never leaves your Mac

Every conversion, backup and repair runs on your own machine. Your mail is not uploaded to a server, not queued as a cloud job and not held anywhere we could read it.

That covers the file as well as the network. Take a checksum before and after and the same digest comes back, because nothing is ever written to the source.

  • Source opened read only
  • No cloud relay
  • Mail passwords stay on device
Terminalread only
# checksum of the source mailbox, before the conversion
$ shasum -a 256 archive.mbox
9f2c41a0e7  archive.mbox
# now convert it to PDF in the app, then check again
$ shasum -a 256 archive.mbox
9f2c41a0e7  archive.mbox
# same hash. the source was never written to.
What customers say

Trusted with real mailboxes

IMAP Email Backup

“We had 60 staff mailboxes to pull down before a domain move. I set the date range, pointed it at a folder and left it running overnight. Nothing was missing in the morning.”

HM
Hannah M.IT administrator
Mac Outlook Recovery

“A client sent over an archive Mac Outlook would not touch. The preview showed me what was recoverable before I paid anything, which is why I bought it.”

DK
Daniel K.Migration consultant
PST Converter

“We work entirely on Apple hardware and the other side sends Windows Outlook archives every single time. This opens them without an Outlook licence sitting on a machine somewhere.”

TS
Tara S.eDiscovery analyst
See what people use these for
Questions

Common questions

Do I need Outlook installed to open a PST or OLM file?

No. The converters read the file directly, so Outlook does not need to be installed or licensed on the Mac.

Does the tool change my original file?

No. It is opened read only and the output goes somewhere else entirely. Run shasum on the source before and after if you want to prove it.

What does the free trial let me do?

Every tool runs a full preview so you can see your data before you decide. The licence is what unlocks saving and exporting.

Do the tools run on Apple Silicon?

Yes. Every tool ships as a universal binary that runs natively on M-series and Intel Macs.

Is my mailbox data uploaded anywhere?

No. Everything runs on your Mac. Backup tools connect only to your own mail server and your password stays on the device.

What macOS version do I need?

The tools run on macOS 12 and later, on both Apple Silicon and Intel.

Something we have not covered? Ask our team and a person will reply. The blog goes deeper on the formats, from why an OLM file will not open to where Apple Mail stores emails on a Mac.

Format and compatibility details on this page were last checked on .

Start with the file that is giving you trouble

Run the trial on that exact file before you spend anything. No account, nothing uploaded, 30 days to change your mind.

Universal · macOS 12+ · 30-day refund