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How to Import MBOX to Office 365 On Mac? Complete Guide

Swathi
Last updated: August 19, 2025 10:14 pm
Swathi
Published: August 22, 2025
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6 Min Read

User Query: “I have several MBOX files on my Mac. How can I import MBOX to Office 365 without losing any data?”

Table of Contents
Native Approach to Import MBOX File to Office 365Part A: Import MBOX into Apple MailPart B: Drag Emails to Outlook for MacPart C: Sync Outlook with the CloudDrawbacks of Manually Import MBOX into Outlook 365:Pre-Requirements Before Using the Manual MethodAutomated Tool to Import MBOX to Office 365Advantages of Using this UtilityConclusionFrequently Asked Questions
How to Import MBOX to Office 365 On Mac? Complete Guide

If you’re using a Mac and have legacy emails saved in MBOX, but now want to import your MBOX to Office 365, no need to worry! MBOX files are most commonly used by Apple Mail, Thunderbird, Eudora, and various email clients. However, Office 365 doesn’t support MBOX directly, so it might seem difficult. Fortunately, it’s very easy and simple with the MBOX Converter Tool. It helps you to quickly convert MBOX files into a format supported by Office 365. Therefore, no technical skills are required. Thus, this query will be solved after reading the full blog, so read till the end.

Native Approach to Import MBOX File to Office 365

If you don’t want to spend money, there is a cost-free method to move your MBOX emails to Office 365. Although this method may take a few steps, it works well and keeps your data safe. Now, follow the steps below to manually import an MBOX File to Office 365 using Apple Mail and Outlook for Mac.

Part A: Import MBOX into Apple Mail

  1. Firstly, open Apple Mail on your Mac.
  2. Open the File tab, select Import All Mailboxes.
  3. Choose MBOX files, and click Continue.
  4. Locate your .mbox file, and click choose.
  5. As a result, it will add your emails under the “On My Mac” section.

Part B: Drag Emails to Outlook for Mac

Proceed with these steps to import MBOX to Office 365:

  1. Now, open Outlook for Mac.
  2. In Apple Mail, open your MBOX emails imported earlier.
  3. Now, just select the email and drop it into a folder in Office 365.

Part C: Sync Outlook with the Cloud

  1. Now, Outlook will automatically sync the emails to your Office 365.
  2. At last, check Outlook Web Access (OWA).

Drawbacks of Manually Import MBOX into Outlook 365:

  • The first drawback is that this method is time-consuming.
  • Moreover, you must use both Apple Mail and Outlook.
  • Along with that, Office 365 doesn’t support MBOX files directly.
  • There is a major chance that all emails might not transfer properly.
  • Apart from that, you can’t select specific emails to move.

Therefore, to overcome these issues, using an efficient tool is a faster and safer option.

Pre-Requirements Before Using the Manual Method

To make the migration easier, keep the following points in mind before starting the process.

  • Always keep a duplicate copy of your original files.
  • Make sure your account and passwords are correct.
  • Also, you should have a good Internet connection.
  • Turn off two-factor authentication or use an app password.
  • Ensure your files are not corrupted.

Automated Tool to Import MBOX to Office 365

MacSonik MBOX Converter Tool is a user-friendly Mac-based software that helps you convert and import MBOX files into various email platforms, including Office 365, Gmail, Yahoo, Outlook, and more. One of its key features is the ability to convert MBOX file to PST, making it easier to access your emails in Microsoft Outlook. Moreover, it supports multiple conversion formats and moves only the emails you need. You can also apply filters to sort emails by date, subject, and other criteria, ensuring your data stays well-organized. Most importantly, all your email data remains secure throughout the process. This makes it an ideal tool for both beginners and professionals.

Here’s a Step-by-Step Guide: Import MBOX to Microsoft 365

  1. Install the MBOX File Converter for Mac after downloading it, then open the application.
  2. After that, click on Select Files/Select Folder to add MBOX files.
  3. Now, you can preview > select the MBOX file to convert.
  4. Then, choose Office 365 same as the saving format from the list.
  5. Next, log in to your Office 365 account credentials.
  6. In the end, apply advanced features and filters. Click Convert.

After that, import your data and review it once.

Advantages of Using this Utility

Moreover, users with different technical expertise can proceed with this software. Some of the key features are:

  • You can sort the selective data with different features(by date, subject, etc.).
  • The format of the original folder will be the same as the previous one.
  • Along with that. It can manage multiple MBOX files simultaneously.
  • We can convert our emails safely without any data loss.

Conclusion

Now you know how to easily import MBOX to Office 365. While the manual method works, it’s not perfect for everyone. Therefore, using the above-recommended solution is the appropriate one. It’s faster, safer, and as well as more reliable. In addition, if you’re a technical or non-technical user, this tool helps you save hours of manual work and ensure your data stays safe and well-organized.

Frequently Asked Questions

Q. What is the easiest way to import MBOX to Microsoft 365 on Mac?

A. The easiest way is by using MacSonik MBOX Exporter, which directly import MBOX to Outlook 365 in just a few clicks.

Q. Will my email folders stay organized after conversion?

A. Yes, with the help of this tool keeps the original format, so that your emails stay organized.

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