Best Solution to Convert EML to MSG on Windows & MacOS

Written By Neeru Kuchhal
Updated on February 28th, 2026

Olivia’s Query: “I need to change a batch of EML files from my old email program into MSG format for Outlook. Which method works best to convert EML to MSG on Windows and macOS without damaging attachments or layout?”

Introduction: EML files are mostly used to store separate email messages. These files contain important details such as email body, sender/receiver details, subject, date, metadata, and attachments. Therefore, any email platform supports the EML format. In contrast, MSG is a restricted format used by Microsoft Outlook. These files store complete Outlook email items, including formatting and properties. If you need to convert EML file to MSG, this guide explains both manual and professional solutions. Also, covers a verified CloudMigration EML File Converter Tool to confirm safe and accurate conversion.

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Table of Contents

How EML Files Differ from MSG Files?

EML and MSG are both email file formats used to store email messages. Let’s understand the difference between the two formats before proceeding.

Feature Criteria	EML Format	MSG Format
Primary Use	Stores individual email messages	Stores Outlook email items
Compatibility	Supported by multiple email clients	Supported by Microsoft Outlook
Platform Support	Windows & macOS	Mostly Windows (Outlook-based)
File Structure	Plain text	Binary format
Attachment Support	Yes	Yes
Data Storage	Basic email headers	Advanced Outlook properties
Best For	Cross-platform email sharing	Outlook environment & enterprise use

Why You Should Convert EML to MSG?

There are several reasons why users choose MSG over EML format:

MSG files are directly supported in Microsoft Outlook.
For corporate or enterprise email management.
To maintain compatibility with Outlook environments.
For legal or official documentation needs.
Moreover, to preserve Outlook-specific properties.

How to Change EML to MSG Manually?

If you prefer not to install any third-party tool, you can use the manual methods. However, this approach requires a significant amount of time and effort.

Below are the following approaches for Windows & macOS:

Approach 1. Using the Drag & Drop Method in Outlook (For Windows)

Firstly, open MS Outlook on your system.
Now, drag the EML file into Outlook.
Then, open the imported email.
After that, click File and further, Save As.
Lastly, choose MSG as a saving file format.

Approach 2. Using MS Outlook for Mac

Firstly, open MS Outlook for Mac.
Then, import the EML file.
Drag the email into a local folder.
Export or save it as MSG (if supported).

Limitations of the Manual Method to Convert EML to MSG

This method requires Outlook installation.
It is not suitable for multiple conversions.
Very time-consuming for multiple files.
Sometimes, it may affect the formatting.
Some Outlook versions may not fully support direct conversion.

How to Export EML Files to MSG Professionally?

To overcome the manual limitations and for multiple conversions, use a dedicated CloudMigration EML Converter Software. It allows users to import EML to Office 365 and more email platforms. This tool guarantees the complete process without any data loss. Additionally, it has a simple and beginner–friendlyinterface that is suitable for every user.

One-Time Conversion Service Option

If you have a large number of multiple EML files and need expert assistance, you can opt for a one-time EML to MSG conversion service. Just connect with our team and share the files. Our team will securely convert EML to MSG with:

Complete accuracy

Maintains data privacy

Offers zero data loss

Delivers fast results

This service is ideal only for business professionals with a large number of datasets.

Step-by-Step Procedure to Convert EML to MSG Free Using the Tool

Firstly, start accessing the CloudMigration EML Converter Software and click Next to begin.
Click Select Files/Folders to add the EML file that you want to convert, and click Next.
Afterwards, verify the complete mailbox data, and click Next.
Then, choose MSG as the saving file format.
Finally, apply built-in filters, choose a path to save the file, and click Convert to start the conversion.

Note: If you want to learn more, you can also explore how to import EML to iCloud efficiently.

Real-Life Scenario:

Eliza received archived EML files from a former employee and needed them in MSG format to open directly in Microsoft Outlook for business use. She used an automated EML conversion tool to batch convert all EML files into MSG format. Thus, all files were successfully converted with attachments and formatting intact. She could open them directly in Outlook without any issues.

Note: If you want, you can also import EML to AOL Mail without any loss.

Conclusion

To conclude, converting EML to MSG on both Windows and macOS can be done manually, but this approach works only on a limited number of files. Also, it seems very time-consuming for bulk files. For hassle-free conversion, using a professional EML File Converter Tool is the best solution to convert EML to MSG. In addition, you can also go for a one-time conversion service. You can select the method according to your requirement. In case you find any issues, kindly connect with our technical support team.

Frequently Asked Questions

Q1. Can Microsoft Outlook open EML files directly?

Ans. Yes, Microsoft Outlook can open EML files, but compatibility depends on the version. Older versions (like Outlook 2007/2010) may open EML files directly by double-clicking. However, newer versions often require you to drag and drop the EML file into Outlook or use a DRS conversion method to properly access and save it in MSG format.

Q2. Is it possible to convert EML to MSG without Outlook?

Ans. Yes, it is possible. You can use a professional DRS EML to MSG converter tool that does not require Outlook installation. This tool allows standalone conversion while maintaining email structure, attachments, and metadata. Manual methods, on the other hand, typically require Outlook to complete the conversion.

Q3. Will attachments be preserved during EML to MSG conversion?

Ans. Yes, attachments can be preserved during conversion, but only if the method used supports complete data migration. An automated CloudMigration EML converter generally retains:
– Attachments
– Email formatting
– Metadata (To, From, Subject, Date)
– Inline images

Manual methods may sometimes affect formatting or embedded elements.

Q4. How can I bulk convert EML files to MSG?

Ans. For bulk conversion, a dedicated DRS EML conversion tool is the most efficient solution. It allows you to:
– Convert multiple EML files at once.
– Convert entire folders.
– Maintain folder hierarchy.
– Save time and effort.

Manual drag-and-drop methods are not practical for large volumes of files.

Q5. Is EML to MSG conversion safe?

Ans. Yes, EML to MSG conversion is safe when:
– You use trusted and reputable CloudMigration EML converter software.
– The tool performs offline conversion.
– No data is uploaded to external servers.

Always download tools from official websites and avoid unknown sources.

Q6. Which is the best method to convert EML to MSG?

Ans. The best method depends on your needs:
– For a few files: Manual drag-and-drop method using Outlook.
– For bulk conversion or professional use: Dedicated DRS EML to MSG converter tool.
– For maintaining complete data integrity: Professional DRS software is recommended.

If you frequently handle email migrations or large datasets, a professional method is the most reliable and time-saving option.

About The Author:

Neeru Kuchhal

I am Neeru Kuchhal, a Technical Content Writer who focuses on turning complex ideas into clear, engaging, and impactful content. I combine creativity with strategy to write blogs, web content, and technical articles that connect with the right audience and support brand goals. I believe great content is not just written. It is thoughtfully created to inform, build trust, and drive action.