MAILFOLIOApp Store

PRIVATE READER / 001

The email file
opens here.

Read Outlook messages, mail archives and Winmail attachments without sending private correspondence to a conversion server.

$9.99 once. Three files free. No account. No subscription.

100%LOCAL
9:41● ● ●
MAILFOLIO•••
✓ PRIVATEMSG

Contract review
and next steps

FROM
alex@example.com
TO
you@example.com
DATE
23 July 2026

Hi — attached is the final copy for review. MailFolio keeps this message and every attachment on your device.

PDFsigned-contract.pdf1.2 MB
⌁Reader▰Library＋≡Settings

A QUIET UTILITY FOR SENSITIVE WORK

“Your correspondence stays yours.”

MailFolio parses message bodies, headers and attachments on your Apple device.

Remote HTML content, scripts, forms and tracking pixels are blocked inside the reader.

No login. No advertising SDK. No analytics profile. Nothing is uploaded by MailFolio.

FORMAT DESK / 006

Odd files.
One calm place.

01

MSG / OFT

Outlook HTML, plain text, compressed RTF, attachments and embedded messages.

02

EML / EMLX

MIME messages with encoded headers, inline resources and alternative bodies.

03

MBOX

Browse multi-message archives, search the correspondence and export the entire set.

04

WINMAIL.DAT

Extract classic and MAPI-packed TNEF content without hunting for a desktop converter.

05

MHT / MHTML

Open web archives while keeping external requests and active content switched off.

06

PRO EXPORT

Create searchable PDF, portable EML, self-contained HTML and plain-text copies.

FIELD GUIDES / 004

Solve the file
in front of you.

01 · MSG FILES

How to open an MSG file on Mac, iPhone or iPad

Install MailFolio, open the MSG file from Finder or the iOS Files app, and MailFolio will decode the message and its attachments on your device.

02 · WINMAIL.DAT

How to open Winmail.dat on iPhone or iPad

Save the Winmail.dat attachment to Files, open it with MailFolio, then read the decoded message and save any attachments you need.

03 · MBOX ARCHIVES

How to open and browse an MBOX file on Mac

Open the MBOX file in MailFolio, select messages from the archive list, and read or export them entirely on your Mac.

04 · PRIVATE PDF EXPORT

How to convert MSG to PDF without uploading the email

Open the MSG file in MailFolio, choose Export → Searchable PDF, and save the generated PDF. Parsing and PDF creation happen on your device.

05 · BEST MAC MSG APP

Best Mac app to open MSG files (2026)

macOS has no built-in MSG reader. MailFolio decodes MSG and its attachments on your Mac, with no upload and no account, under a one-time purchase.

06 · BEST WINMAIL.DAT APP

Best app to open Winmail.dat on Mac, iPhone and iPad

MailFolio decodes classic and MAPI-packed TNEF locally on Mac, iPhone and iPad, exposing the message body and the real attachments hidden inside Winmail.dat.

07 · BEST EML VIEWER

Best EML viewer for Mac and iPhone

MailFolio opens EML and EMLX files directly, renders the message with remote resources blocked, and exports it without importing anything into Apple Mail.

08 · BEST MBOX VIEWER

Best MBOX viewer for Mac (2026)

MailFolio browses an MBOX archive locally on Mac, message by message, and can export a searchable PDF of a message or the entire archive under Pro.

09 · BEST IPAD VIEWER

Best email file viewer for iPad

MailFolio opens every common email-container format on iPad, decodes attachments locally, and needs no account or connection to read a saved file.

BUILT FOR THE REAL HANDOFF

From “I can’t open this”
to a usable record.

  1. 01

    Open from anywhere

    Use Files, Mail, AirDrop, Finder, Open In, a Home Screen quick action or a Shortcut.

  2. 02

    Read the full message

    Inspect recipients, dates, headers, HTML or RTF content, nested messages and every attachment.

  3. 03

    Take the next action

    Preview, save, share, reply, forward or export a durable copy—without a conversion service.

MAILFOLIO PRO / LIFETIME

Useful once.
Yours for good.

$9.99ONE-TIME PURCHASE

Unlimited opening and every professional export on iPhone, iPad and Mac.

Download on theApp Store

DESK NOTES

Questions, answered.

Does MailFolio upload my email?

No. File parsing and rendering happen on your device. MailFolio contains no account system, advertising SDK or conversion-server integration.

Can it open every Outlook file?

MailFolio handles the common MSG, OFT, EML, EMLX, MBOX, MHT, MHTML and Winmail.dat variants. Encrypted, malformed or proprietary future variants may not decode completely.

Is $9.99 a subscription?

No. MailFolio Pro is a one-time, non-consumable App Store purchase. The first three successful imports are free.

Which languages are included?

English, Italian, German, French, Spanish, Brazilian Portuguese, Dutch, Japanese and Simplified Chinese.