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Written By Rohan Wiese
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Updated on October 8th, 2025
Best way to migrate EMLX files to Office 365 – Quick Solution
Summary: The majority of macOS users will save their emails in Apple Mail as .emlx files. These files will save each message, and they are easy to manage on a Mac operating system, but when switching to Office 365, users often face compatibility issues, as Microsoft Outlook or Office 365 does not support the EMLX format. This guide will tell you everything you need to know when moving EMLX emails to Office 365. It includes why the migration is required and the available methods. Also, the best solution to migrate EMLX Files to Office 365 is with Aryson EMLX Converter without any data loss.
Most Common Reasons To Migrate EMLX Files to Office 365
The transition from Apple Mail to Office 365 has become a common trend for users who want improved integration and security. Below are a few key reasons that have contributed to this transition.
- Cross-Platform Compatibility: Apple Mail emails are stored in the EMLX file format; this proprietary format can only be read on macOS devices. Office 365 works across platforms.
- Centralized Data Management: Office 365 proposes centralized cloud storage that allows users to access their emails, contacts, calendars, and attachments on any device.
- Increased Security and Backups: Office 365 has strong user protection, encryption, and backup data to the cloud on a continuous basis.
- Collaboration and Productivity: Office 365 supports collaboration with software products like Teams, OneDrive, and SharePoint.
These are some reasons
Approach 1: Easy Way to Migrate EMLX Files to Office 365
The Aryson EMLX Converter Tool is a user-friendly software application that helps you easily import your EMLX files into Office 365. It guarantees no data loss, supports bulk migration, and keeps the original folder hierarchy intact. This tool can also convert EMLX files into several other formats, including PST, MBOX, PDF, EML, and more. This makes the product an option for businesses with a substantial amount of email data or users with little technological expertise. Along with Office 365, it can also convert EMLX to EML and other file formats.
Follow these simple steps to Transfer EMLX files to Office 365:
- Firstly, download and install the EMLX Converter Tool on your Windows system.
- Simply click on Select File or Select Folder to load your .emlx files.
- Once loaded, it will display a preview of your selected data to recheck.
- From the Export Options, select Office 365 as the saving option.
- Enter your Office 365 login credentials, like username and password.
- Apply optional filters such as date range, folder selection, or duplicate removal.
- Finally, click the Convert button to Export EMLX to Office 365.
Approach 2: Import EMLX to Office 365 With Apple Mail
If you have a few files and do not want to import them with the tool, use Apple Mail for the conversion:
- Firstly, open Apple Mail and drag the EMLX file into it.
- Next, select the email you imported.
- Navigate to File > Save As > Raw Message Source.
- Next, save it with an .eml extension.
- Open Outlook to import the .eml file.
- Finally, upload the .eml files to Office 365 using Outlook sync.
Note: However, this process is lengthy, time-consuming, and not ideal for organizations or large mailboxes.
Challenges in Manual EMLX to Office 365 Migration
Apple Mail enables exporting messages; however, you cannot directly import .emlx files into Office 365. Users attempting this using manual methods experience multiple challenges:
- Office 365 does not recognize the .emlx file type.
- Outlook or Exchange Admin Center has no options to import directly.
- Converting .emlx files manually is an impractical approach for migrating bulk information.
Conclusion
When you migrate EMLX files to Office 365 is not a complicated process. If you only need to move a few emails, you can certainly use manual methods, but these can become unreliable when you are handling large numbers of mailboxes. The above-mentioned converter tool is an easy solution that can import EMLX files into Office 365 quickly. While assuring that your data is fully intact and you will experience zero downtime.
Frequently Asked Questions:
Q.1. Is there a free method to import EMLX files into Office 365?
Ans: Yes, you can manually import EMLX files into Office 365 using the Outlook desktop application. For bulk migration or large data transfers, using the demo version of the Aryson EMLX Converter tool is a more efficient and reliable option.
Q.2. What tools are available to convert EMLX files to Office 365?
Ans: Several tools are available online to help import EMLX files to Office 365 safely. Among them, the Aryson EMLX Converter Tool is one of the best choices. It supports direct migration of EMLX files to Office 365 while maintaining the original folder structure, attachments, and metadata.
Q.3. What are the common issues faced during EMLX to Office 365 migration?
Ans: Users often face issues like incomplete data transfer, email formatting errors, and authentication failures. Additionally, manual methods may not support bulk file import or large-sized mailboxes, increasing the risk of data loss or disruption during migration.
Q.4. How to import EMLX files to Office 365?
Ans: Using the Aryson EMLX Converter Tool offers a direct and hassle-free way to migrate all EMLX emails to Office 365 in just a few clicks:
1. Firstly, download and install the EMLX Converter Tool on your Windows system.
2. Launch the tool and click Add File or Add Folder to load your .emlx files.
3. Once loaded, the tool will display a preview of all your email items.
4. From the Export Options, select Office 365 as the target saving option.
5. Enter your Office 365 login credentials, like username and password.
6. Apply optional filters such as date range, folder selection, or duplicate removal.
7. Finally, click the Convert button to Export EMLX to Office 365.
About The Author:
As a lead technical writer, I know the technical problems faced by office and professional users. So, I decided to share all my technical knowledge through this blog. I love helping you with tough challenges when dealing with technical issues.
