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Best Practices to Import MBOX to Office 365

how to import mbox to office 365

Published By Nilesh Kumar
Debasish Pramanik
Approved By Debasish Pramanik
Published On January 18th, 2024
Reading Time 5 Minutes Reading
Category Data Migration

Know how to import MBOX to Office 365 using 2 free manual methods. If you seek professional help, an automated tool is also included.

Cloud is the future. It is powerful, cost-effective, and will continue to grow in the future. Whether it’s enterprise or self-employed individuals, everyone is more or less shifting to cloud applications to better manage their work.

The same holds for desktop-based email client users. Many have already shifted their mailboxes to cloud applications like Microsoft 365 and many are on the way. After all, it is centralized, more productive and it allows them to work anytime, anywhere. In this article, we are focusing on specific user groups who wish to import MBOX file to Office 365 accounts.

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Process MBOX Files of All Origins

  • Associated with email clients like Mozilla Thunderbird, Entourage, etc.
  • Downloaded from email apps like Gmail.
  • Backup files created through Backupify, MozBackup, etc.
  • Old archive mailboxes of different types – .mbox, .mbx, .mbs, MBOX without extension.

Regardless of its origin, as long as you have a healthy MBOX file, you can easily upload it to Microsoft 365 after reading this article.

Without further ado, let us start with the manual solution to import MBOX to Office 365.

Free Solution to Upload MBOX to Office 365

The manual solution to import MBOX file to Office 365 is divided into three different segments. At first, we will set up the Office 365 Account in a desktop mail client. After that, we will use the free Add-on to complete the process.

In case, if you don’t want to complete the process manually, then you can directly jump to the automated solution section. It is a more secure & convenient way to import MBOX file to Office 365. So, let’s begin the solution with a manual approach.

Step #1)  Setup Office 365 in MBOX Compatible Mail Application

  • Firstly,  download the Thunderbird email client.
  • On setup select the skip option and use the existing email.
  • Now, enter the Office 365 account details in the Account Setup Wizard.
    setup office 365 account
  • Afterwards, click on Configure Manually and enter details.
    add configuration details
  • At last, Click Done and Authenticate your account.

Now, let’s head to the second stage of manual solution to import MBOX to Office 365.

Step #2)  Import MBOX File to Mail Client

  • Run Thunderbird, and tap the Alt key.
  • After that, go to the Tools menu and select Add-ons
  • Search for ImportExportTools in the search bar.
  • Click on the +Add button >> Add the ImportExportTools NG.
    install add-on to import MBOX to Thunderbird
  • Then, restart the email client.
  • Right-click on Local Folders >> ImportExportTools NG >> Import MBOX File.
    successfully upload the mbox file
  • After that, click OK and select the MBOX file you want to import in Microsoft 365, then click Open.
  • At last, the file is added and emails are available in the email client.

Step #3) Copy & Import MBOX File to Office 365

  • Select all the MBOX emails (Ctrl+A) and right-click.
  • Choose Copy to >> Office 365 account.
    Copy and import mbox to Office 365
  • This will copy all the emails from MBOX to the Office 365 mailbox.
  • Now, Check the Microsoft 365 account on a browser to confirm that all the files are there.

Professional Way to Import MBOX File to Office 365

If the complex and time-consuming manual methods are not your cup of tea, then give this professional tool a try – MBOX to Office 365 Migrator.

Free Download Purchase Now

Benefits of using Professional MBOX to Microsoft 365 Tool:

  • Allows to batch import multiple MBOX files into O365 account(s) at once
  • Allows uploading files to more than 1 account at a time through impersonation.
  • Date-range filter is available to migrate selective emails
  • Option to maintain folder hierarchy/structure

Steps to Import MBOX to Office 365

  • Download & Run the software on Windows, then click the Add Files button.
    start mbox to office 365 migrator
  • After that, add MBOX file(s) from the system into the software.
  • Here, select Office 365 and choose to Maintain Folder Hierarchy. Then, click OK.
    select office 365 option
  • Input and Login to validate the account, then map the added MBOX file(s) to the corresponding Office 365 ID.
  • Afterwards, click the Set button to apply the Date-range filter.
    apply date-range filters
  • Then click on Export to start importing MBOX files to your Microsoft 365 account.
    export mbox to Microsoft 365
  • At last, you can save the progress report once the process is completed for future use.

Concluding Thoughts

Microsoft 365 is the new trend. When moving to the cloud, one will always consider O365 among the valid options. And if confirmed, the task to import MBOX to Office 365 becomes an important one. We have 3 methods here to get you through the MBOX to Office 365 process in a seamless manner. You can opt for any of the given ways to import MBOX files to Office 365. We will recommend the professional tool as it overshadows all the limitations of the manual methods. Above all, it allows you to upload multiple files in one go.