How to Import MBOX to Office 365 With 2 Simple Methods?

Jackson Strong | January 5th, 2023 | Email Migration, Office 365

If you are wondering about a solution for how to import MBOX to Office 365, then this article is for you. Here, we will discuss the step-by-step procedure to import MBOX file to Microsoft Office 365. Read this blog to know the top 2 solutions to perform MBOX to Office 365 migration without any issues.

MBOX is a widely used email storage format that stores various important information. It is compatible with multiple email clients such as Mozilla Thunderbird, Apple Mail, Entourage, and others. MBOX files can store emails along with details like sender, recipient, subject, and content. If someone has their data in MBOX file, it can be easily shared with others. However, there are cases where users need to import EML MBOX to Office 365.

Importing MBOX file to Office 365 may not be easy for everyone, so we will explore the best and simplest methods to import MBOX file to Office 365 account.

Table of Content

  1. Upload MBOX to Office 365 With Thunderbird Manually
  2. Import MBOX to Office 365 Without Thunderbird
  3. Quick Steps for MBOX to Office 365 Migration
  4. Features of using an Automated Solution
  5. Conclusion
  6. FAQ’s

In this dynamic landscape of email communication, users often find themselves needing to switch from one mailing platform to another. Migrating from an MBOX-supported email client to an Office 365 is the common scenario given the robust and advanced features offered by the latter. However, importing MBOX file to Office 365 can be a complex process that requires an appropriate approach. So, learn the secure and efficient ways to import MBOX to Office 365 in a few simple clicks.

How to Import MBOX File to Office 365 Manually?

The only manual solution is to import MBOX from Thunderbird to Office 365. As we know, Thunderbird can easily import MBOX files to its account. So let’s start with the step-by-step process. The whole process is divided into two main steps, so don’t forget to follow each one individually.

1. Launch and run Mozilla Thunderbird in your system tap Skip and use your existing email.

2. Enter your name, Office 365 email address and password. Click the Next button.

set up office 365 account

3. Now, provide the details to configure it manually, and click on the Done button.

set up office 365 account in thunderbird

4. Once completed, restart Thunderbird and install the importExportTools NG plugin.

5. Then, Go to the local folder & right-click on it.

6. Next, choose importExportTools NG>> Import MBOX File.Import MBOX file

7. Now navigate to the MBOX file and upload it to Office 365.

8. Select this MBOX file and click Copy to >> Office 365 Account.

copy mbox to office 365

In this way, you can manually migrate MBOX to Office 365 via Thunderbird.

Demerits of Manual Method

  • The described solution is lengthy and time-consuming.
  • Non-technical users will find this solution difficult to implement.

How to Migrate MBOX to Office 365 Professionally?

As there you can see in the above method, it is very complex and lengthy. Anyone can easily get fed up by implementing this solution to upload MBOX file in Office 365 Account. For those seeking a direct way to import MBOX file to Office 365 must try the Advik MBOX Converter. This handy tool easily handles mbox to Office 365 migration in bulk. You can upload an unlimited number of MBOX files to Office 365 account using this utility. Even, you can import large-sized .mbox files without facing any glitches or errors. Also, it maintains a complete folder hierarchy of MBOX emails throughout the process.

Moreover, the tool is best suited for non-technical users as its self-intuitive interface makes it easy for anyone to operate it. This tool is specially designed for Office Small Business users. Thus, it is an easy-to-use tool that can easily complete the whole process in just four simple steps and deliver the desired results.

Try the FREE demo version of this tool to check its working steps on your Windows machine at no cost.

Note: Enable Less Secure Apps in Office 365. Click here for the instructions.

Steps to Import MBOX to Office 365 Email Account

  1. Run the automated tool on your system; click Select File and locate the .mbox file.add mbox file to import
  2. Choose the required MBOX email folders of your choice.choose the required MBOX email folders
  3. Next, select Office 365 as a saving option from the office 365 as saving option
  4. Enter Office 365 login credentials & click the Convert button. enter office 365 account details & click convert

Now, analyze the live MBOX to Office 365 migration process.

analyze the MBOX to Office 365 migration process

Done! This is how you can import MBOX file to Outlook 365 account. Now open your Office 365 webmail account and access the complete data of the Mailbox archive. This is one of the widely opted solutions for MBOX to Office 365 migration purposes.

Now watch a video guide that will surely explain to you how to perform this task even more effectively.

Overall, this software is the ultimate solution to transfer data from mailboxes. The best part of the tool is that it never modifies the mailbox structure as well as email layout. You will get the exact data with attachments.

Why Choose MBOX to Office 365 Migration Tool?

  • The simplest user interface for technical and non-technical users to use this utility without any further assistance.
  • Batch import MBOX to Office 365 account in a single attempt to save time and manual efforts.
  • Maintain mailbox folder hierarchy and key elements of MBOX file throughout the process.
  • Also, this tool offers to repair MBOX file whether it is damaged or corrupted.
  • Export MBOX to 20+ file formats; such as that you can convert MBOX to PST, EML, PDF, MSG, DOC, HTML, etc.
  • Preserve Metadata and other mailbox items such as To/from, subject, Cc, Bcc, hyperlinks, attachments, etc.
  • With this tool, users can also extract emails from MBOX file with attachments in a few simple steps.
  • Unlimited migration with no maximum file size limitation so that users can use this utility as per their requirements.


The write-up offered two easy ways to import MBOX to Office 365 account. Both manual and professional solutions are thoroughly explained with step-by-step details. However, if you find a manual solution a little bit difficult and lengthy then give an automated tool a try. It is an advanced and ultimate approach that gives the desired output in less time.

Frequently Asked Questions (FAQs)

Q1. I have Opera Mail MBOX files, can I use this utility to transfer Opera Mail to Office 365?

Ans. Yes, this tool supports more than 20+ MBOX-supported email clients. Thus, you can easily migrate email from Opera Mail to Office 365 Account.

Q2. I have a large number of MBOX files and I want to know how to import multiple MBOX files into Office 365 account using this utility.

Ans. Yes, this MBOX to Office 365 Converter gives complete freedom to import an unlimited number of MBOX files to immediately.

Q3. Can I import MBOX to other webmail services such as Zoho Mail?

Ans. Definitely, this tool allows you to import MBOX to Zoho Mail and almost every IMAP-based email service with no issues.