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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 HTML Conversion?

OLM to HTML conversion takes an Outlook for Mac OLM file (ZIP-based archive with XML email data) and exports each email as a .html file. HTML can be opened on any device, preserving layout and formatting. Converting to HTML is ideal for archiving, sharing, or viewing emails without an email client.

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

Use cases include archiving Outlook for Mac mail as web-viewable files, creating reports or documentation from emails, and viewing messages offline on any device. No Microsoft Outlook for Mac installation is required — the tool works on Windows, Mac, and Linux.

Features

Features

Why use our OLM to HTML converter

HTML output per email

Each message in your OLM is exported as HTML. Open on any device for readable, formatted email content.

ZIP-based OLM parsing

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

100% private

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

No Outlook required

Use the converter on Windows, Mac, or Linux. No Microsoft Outlook for Mac installation needed.

Preview before convert

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

How it works

How to Convert OLM to HTML

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

01
01

Open OLM to HTML Converter

This page opens with HTML 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 one HTML file.

04
04

Convert & download HTML

Click Convert & Download. Each email is saved as a separate HTML file for easy viewing.

FAQ

Frequently Asked Questions

Common questions about OLM to HTML conversion

Q1. What is OLM to HTML conversion?
OLM is Outlook for Mac's archive format (ZIP-based). Converting OLM to HTML extracts each email and saves it as an HTML file — viewable on any device with formatting preserved.
Q2. Why convert OLM to HTML?
HTML is ideal for archiving, sharing, or viewing emails without an email client. Use it for reports, documentation, or offline reading.
Q3. Does each email become one HTML file?
Yes. Every message in your OLM is exported as its own HTML file. You can download all HTML files in one go or choose specific emails to convert.
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 HTML converter works on any modern platform. No Outlook for Mac or desktop software is required.
Q6. Can I convert multiple OLM files to HTML?
Yes. Add as many OLM files as you need. Each is parsed independently. You can export all emails as HTML or select specific messages.

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