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Free OLM Converter
Convert to Any Format

Convert Mac Outlook OLM files to PST, EML, MBOX, CSV, HTML, JSON, or TXT.

7 output formatsMac Outlook supportEmail & contactsInstant conversion

Drop OLM file here

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Overview

What Is OLM to JSON Conversion?

OLM to JSON conversion takes an Outlook for Mac OLM file (ZIP-based archive with XML email data) and exports each email as a JSON object in an array. JSON is the standard format for structured data. You get fields like from, to, subject, date, and body — ready for apps, APIs, databases, or scripts.

Our free OLM to JSON converter processes on your device. You drop one or more .olm files, and the tool extracts all emails, then generates valid JSON. All processing happens on your device; nothing is uploaded to any server.

Use cases include feeding Outlook for Mac mail into apps or APIs, importing into a database or search index, automation and scripting, and data analysis. No Microsoft Outlook for Mac installation is required — the tool works on Windows, Mac, and Linux on any modern platform.

Features

Features

Why use our OLM to JSON converter

Structured JSON output

Each extracted email from your OLM is exported as a JSON object with from, to, subject, date, body, and other fields. Ideal for apps, APIs, or scripts.

ZIP-based OLM parsing

OLM is a ZIP archive. The tool opens it on your device, extracts email data from XML, and outputs valid JSON.

100% private

OLM is read and converted entirely on your device. Nothing is uploaded. Your Outlook for Mac data stays on your device.

API and app ready

JSON is easy to parse in any language. Feed Outlook for Mac mail into databases, search indexes, or custom apps.

Preview before convert

See email count and a preview table of extracted emails (From, Subject, Date) before converting to JSON.

How it works

How to Convert OLM to JSON

Four steps — no install, no Outlook for Mac, no sign-up

01
01

Open OLM to JSON Converter

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

02
02

Drop your OLM file(s)

Drag and drop one or more .olm files. The tool validates the ZIP structure and extracts emails from XML.

03
03

Browse and filter

View extracted emails in the preview. Each email will become a JSON object in the output array.

04
04

Convert & download JSON

Click Convert & Download. You get a JSON file (array of email objects) for use in apps or scripts.

FAQ

Frequently Asked Questions

Common questions about OLM to JSON conversion

Q1. What is OLM to JSON conversion?
OLM is Outlook for Mac's archive format (ZIP-based). Converting OLM to JSON extracts each email and outputs structured JSON objects — with fields like from, to, subject, date, body — for use in applications, APIs, or scripts.
Q2. Why convert OLM to JSON?
JSON is the standard format for structured data. Use it to feed Outlook for Mac mail into databases, search engines, custom apps, or automation. Every major language can parse JSON.
Q3. What fields are in the JSON?
Typically from, to, subject, date, and body (or content). The exact structure matches what the OLM converter extracts. You can parse the JSON in any programming language.
Q4. Do you upload my OLM file?
No. Conversion runs entirely on your device. Your OLM is read and parsed on your device. Nothing is sent to our servers.
Q5. Do I need Outlook for Mac installed?
No. The OLM to JSON converter works on any modern platform. No Outlook for Mac or desktop software is required.
Q6. Can I convert multiple OLM files to JSON?
Yes. Add as many OLM files as you need. Each is parsed independently. You can merge all emails into one JSON array or export per-source file.
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