100% Private & Secure

Free MSG Converter
Convert to Any Format

Convert Outlook MSG files to EML, PDF, MBOX, CSV, HTML, JSON, or TXT.

7 output formatsOutlook MSG supportFull content extractionInstant conversion

Drop MSG file here

or click to browse

Overview

What Is MSG to JSON Conversion?

MSG is Microsoft Outlook's native format for a single email — an OLE2/CFB (Compound File Binary) container storing MAPI properties, headers, body (plain/HTML), and attachment metadata. Converting MSG to JSON means parsing that binary and outputting a structured JSON object: subject, from, to, cc, date, body, bodyHtml, headers, and an attachments array (name, size). One MSG yields one JSON document.

Our free converter processes entirely on your device. You drop one .msg file; the tool parses the OLE2 container, extracts all relevant fields, and writes a .json file. All processing is private; nothing is uploaded.

Use MSG to JSON for scripting, API integration, ETL, or any application that needs structured email data. No Outlook installation is required — works on Windows, Mac, or Linux.

One MSG file yields one JSON file. For bulk conversion, use multiple MSG files or our PST to JSON converter.

Features

Why use our MSG to JSON converter

Structured JSON

Exports the message as JSON: subject, from, to, cc, date, body (plain/HTML), headers, and attachment list. Ideal for scripting, APIs, or data pipelines.

OLE2/CFB parsing

Parses Outlook MSG (Compound File Binary). Extracts MAPI properties and outputs a consistent JSON schema.

No upload

MSG is read and converted entirely on your device. Nothing is sent to any server.

Private & secure

Your MSG file never leaves your device. Ideal for developers or automation.

How it works

How to Convert

Four steps — no install, no sign-up

Open the MSG to JSON Converter

This page opens with JSON already selected as the output format.

Drop your .msg file

Drag and drop one Outlook .msg file, or click to browse. File info and parsed email preview appear.

Review the message

Check From, To, Subject, Date, body snippet, and attachment list. These become JSON fields.

Convert & download

Click Convert & Download. Your .json file downloads. Use in scripts, APIs, or analysis tools.

FAQ

Frequently Asked Questions

Common questions about MSG to JSON

Q1. What is MSG to JSON conversion?

MSG is Outlook's single-message format (OLE2/CFB). The tool parses the MSG and exports a JSON object with keys such as subject, from, to, cc, date, body, bodyHtml, headers, and attachments (name, size). One MSG produces one JSON file.

Q2. Why convert MSG to JSON?

JSON is ideal for developers: scripting, API feeds, ETL pipelines, or any system that consumes structured data. You can parse the JSON in any language and use the fields programmatically.

Q3. Do you upload my MSG file?

No. Conversion runs entirely on your device. Your file is read and parsed on your device. Nothing is sent to our servers.

Q4. Do I need Outlook installed?

No. The converter works on any modern platform — Windows, Mac, or Linux. No Microsoft Outlook required.

Q5. Does the JSON include attachment content?

Typically the JSON includes an attachment list (names and sizes). Binary attachment content is not embedded in the JSON; full extraction would require additional handling.

Q6. Is the MSG to JSON converter free?

Yes. The tool is free to use with no sign-up. Processing is fully private.

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