Convert MSG to EMLX on Mac & Windows (Step-by-Step Guide)

Written By Amit Chandel
Updated on March 23rd, 2026

Rate this post

“I have received more than 1500 emails from a Windows system, but I work on Mac Apple Mail. Now, I need access to all those emails and attachments with no structural or data loss. Considering the number of files I have received, it is not possible to open and view each one of them individually. So, how to bulk convert Outlook MSG to EMLX quickly and reliably?”

-Milly Briar, Project Head, London

Nowadays, email platforms have proprietary formats for email storage and management. Like Outlook uses MSG on Windows and Apple Mail EMLX on Mac, which creates a direct compatibility gap between the two ecosystems. Thus, to bridge this gap, it is essential to convert MSG to EMLX format using the MailConverterTools MSG Converter Tool or any other free solution. This guide walks you through all the available solutions for an optimized conversion with structure and data preservation.

Windows Mac

Download Now Buy Now

Why Enterprises Convert MSG File to EMLX?

Several factors drive the conversion of Outlook Message files into EMLX format, such as:

Switching the environments from Windows to macOS
Securing Outlook emails in a Mac-compatible file format
Using MSG data for analysis and audit on Mac systems effectively
Managing all users on a single space with a definite format
Collaborating feasibly with teams across different spaces
Locating specific emails easily on a Mac with the Spotlight search feature
Unlike MSG, which requires Outlook, EMLX files are text-based and open with any text editor application

Major Difference:

MSG Files → stored as MAPI objects (Microsoft Messaging API)

EMLX Files → stored as a lightweight XML format (expanded version of EML for Windows)

This is the primary structural difference that makes accessibility difficult on Windows and Mac. Yet, the right solution can fix it all. Let’s explore them now.

Native Approach to Convert MSG to EMLX

There is no such direct solution for MSG to EMLX file conversion, but you can follow a workaround approach. The steps of it are:

Initially, open MSG files in your Outlook on Windows OS.
Then, drag and drop them on your local PC desktop.
The files will be saved in the EML format on the OS.
Next, save the EML files on a USB device for transfer.
Later, connect the USB to your macOS and upload the files.
Afterward, load these EML files into your Apple Mail.
At last, Apple Mail will internally save all EML files as EMLX.

Note: Alternatively, you can use Thunderbird as the mediator to make the transfer instead of a USB. First, convert Thunderbird to Outlook or directly load the resultant EML in Thunderbird. Later, configure the same Thunderbird in Apple Mail and convert MSG email to EMLX.

Tip: You can use Thunderbird and Outlook to convert MSG to MBOX, but you will have limitations, so go for the tool for optimal conversions.

Shortfalls of the Method:

Outlook installation is a mandatory aspect.
You need an internet connection and technical skills.
Direct conversion is not possible.
Unsuitable for very large and bulky mailboxes.
No support for attachments, contacts, calendars, etc.
Unscalable and risk of inconsistent formatting.

Common Errors When You Convert MSG to EMLX

During the conversion, some errors are unavoidable, especially if done manually. Here, we have prepared a list of all those errors along with their trick for avoidance. Check them out:

Error	Prevention Trick
Missed Attachments	Ensure the process is complete, and the tool used supports attachments export
Broken Structures	Check HTML rendering after the conversion
Duplicate emails	Use a tool that supports de-duplication
Encoded Characters	Try the tool that allows Non-english encoded characters too

Best solution: Use a professional software tool for the conversion that allows previews and has smart features.

Trusted Approach to Change MSG File to EMLX

As mentioned above, to overcome all errors and manual limitations, a special solution is required. MailConverterTools MSG Converter is the expert-recommended method to securely export and save MSG files in Apple Mail EMLX format in one go. It supports batch conversion, preserves data fidelity and hierarchy, and creates a log report for verification. Additionally, you can check format integrity and use filters for selective conversion, duplicates, attachments, and more. Moreover, it works offline, is very easy to use, convert MSG to CSV and other formats, and offers precision.

Working Process to Convert MSG to EMLX on Mac & Windows

Launch the MSG File Converter Tool and in the first window, click Next.
Then, press Select File or Folder and upload the MSG data to convert. Tap Next.
After that, choose the folders from the preview panel for conversion and click Next.
Later, select EMLX format from the menu and apply selective filters.
Finally, set a target EMLX folder path and click the Convert button to finish.

Note: Try the Demo Version Free for evaluation and convert upto 50 emails per folder at zero cost with forensic precision.

Real Case Example:

A design agency received approximately 1250+ MSG files from a legacy Outlook archive. They needed them in EMLX format for further transfers, as most team members used Mac OS in their organization. The manual conversion method failed abruptly due to the data size and volume, and they needed a quick transfer. Emmy, a team member, suggested that they use the MailConverterTools MSG to EMLX Converter, and soon they were able to export all emails in no time with preserved integrity and retained attachments. The simplified export with no disruptions in the ongoing client communications made this tool their first choice for every other MSG conversion.

Conclusion

Whether you are an individual, a professional, a team, an IT admin, or an enterprise, you must consider that data size and the method chosen are the primary factors for successful conversion. We have learned here that if the data volume is small, then the manual method is alright to convert MSG to EMLX, but it is lengthy, needs technical skills, and offers no guarantee. However, with the MailConverterTools MSG to EMLX File Converter, no matter small or bulky data volumes, convert MSG files easily in no time with zero loss and enterprise-level accuracy. Save time, cost, effort, and achieve scalability, reliability, and precision.

Frequently Asked Questions

Q.1 How can I convert multiple MSG files to EMLX at once?

Ans. For multiple MSG file conversions, use the MailConverterTools Outlook MSG Exporter and save all emails in EMLX format at once.

Q.2 Can duplicate emails be removed during MSG to EMLX conversion?

Ans. Yes. You can remove identical emails during the MSG to EMLX file conversion with the dedicated converter tool. It has a Remove Duplicate feature to de-duplicate emails based on To, From, Subject, Body, and CC.

Q.3 Can I convert MSG to EMLX without Microsoft Outlook?

Ans. Of course, yes. Change MSG file to EMLX without MS Outlook using the MSG File to EMLX Converter by MailConverterTools. It works independently and requires only your MSG emails from any Outlook version.

Q.4 What is the most effective way to convert MSG to EMLX?

Ans. The most effective way to convert MSG email to EMLX is by using the professional MSG Exporter Tool. It has all the specific features that an ideal tool must have for flawless conversions.

About The Author:

Amit Chandel

Meet Amit, an experienced SEO expert and content planner. He uses his creativity and strategy to create content that grabs attention and helps brands reach their goals. With solid skills in digital marketing and content planning, Amit helps businesses succeed online.