Email BackupMboxOffice 365

How to Import MBOX to Office 365 With Attachments?

Summary: This blog will guide you to open MBOX file in Outlook 365 account. In this write up you will find effective solutions to import MBOX to Office 365 account with attachments. Thus read the complete article to know about it.

MBOX file is a widely used file format to save email messages in a single text file. It stores data in an integrated format where messages are saved one after another that start with the “From” header. MBOX file is supported by many email clients including Thunderbird. Apple Mail, etc. However, all email clients are system-dependent. If a user needs to access their emails, they need the system that has that respective application installed. That’s the main reason users switch to cloud-based email account. One such platform is Office 365 which allow its user to operate their emails from any system that is connected to the internet.

How do I import MBOX into Outlook 365? You can do it using MBOX supported email client like Thunderbird. Configure Office 365 account in Thunderbird. Then, install ImportExportTools in Thunderbird to import MBOX file into Thunderbird. After that, move emails from MBOX to Office 365 folder. If you are looking for an instant solution then you can use Xtraxtor MBOX Converter. The software can open MBOX file in Outlook 365 in just a few seconds. Apart from this, the tool also provides various advanced features such as bulk importing, email filtration, folder selection, export options, etc.

Both methods are explained in detail in the upcoming section. Let’s start without any further delay. First, we will discuss free solution and after that expert solutions. Keep continuing and choose the one that is most suitable for you.

Method 1. How to Import MBOX to Office 365 Manually?

Using Thunderbird email client, you can upload MBOX file into Office 365. In this method, first of all, you need to add Office 365 account in Thunderbird. Now, install ImportExportTools NG in Thunderbird. Then import MBOX to Thunderbird. after that, you can open MBOX file in Outlook 365. Hence, this method works in multiple phases. Follow the below given instructions to manually import MBOX file into Outlook 365-

Step 1. Configure Office 365 with Thunderbird

  1. Launch Thunderbird application on your system.
  2. Now, click on Skip and Use Existing account option.
  3. Enter your name, Email address and password of Office 365 account in the respective field.import mbox to office 365
  4. To configure it manually, enter the following details-
    Incoming Mail Server:
    Protocol- IMAP, Server-, Port No- 993, SSL-SSL/TLS, Authentication Type- OAuth2, Username- email address of Office 365 account
    Outgoing Mail Server:
    Protocol- SMTP, Server-, Port-587, SSL-SSL/TLS, Authentication- OAuth2, Username- Office 365 email address.
    Once you fill then click on Done button.
    open mbox file in outlook 365

Now, your Office 365 account is configured with Thunderbird.

Step 2. Install ImportExportTools NG in Thunderbird

  1. Click on 3 horizontal line in Thunderbird window and select Add-Ons option.import mbox to office 365
  2. Enter ImportExportTools NG in search bar nad press Enter.upload mbox to office 365
  3. Choose ImportExportTools NG and click on + Add to Thunderbird option.
  4. After that, click on Add butto
  5. Restart your Thunderbird application.
    import mbox file into office 365

Step 3. Import MBOX to Thunderbird

  1. Go to the folder where you want to import MBOX file and right-click on it.
  2. Choose ImportExportTools NG and click on Import MBOX file.
  3. Now, select Import One or More Directly MBOX File and hit Ok.import mbox into Outlook 365
  4. After that, select MBOX file from your device and click on Select Folder.
  5. Now, open folder in which you import MBOX file and right-click on it.
  6. Navigate to Copy >> Office 365.
    import mbox to office 365

Hence, you can manually import MBOX to Office 365 but it so a lengthy and time-consuming process. Thunderbird must be installed on your system.

Method 2. How to Open MBOX File in Outlook 365 Instantly?

Try Xtraxtor MBOX Converter on your Windows PC. It is a completely safe and secure solution. Using this tool, users can easily import MBOX to Office 365 in bulk without any data loss. While importing .mbox file data, this tool maintains key element and properties of emails and save them in their original format. Along with that, this import tool not open MBOX in Outlook 365, but also import MBOX to Gmail, Yahoo Mail, Hotmail, and many other webmail accounts.


Now without any holdback, let’s know the working of this MBOX to Office 365 migrator tool in detail.

Steps to Import MBOX into Outlook 365 Webmail Account are as follows;

  1. Download the Xtraxtor MBOX to Office 365 Converter tool on your device.
  2. After that click on the Open button and select the MBOX file or folder.Import MBOX to Office 365
  3. Now browse the .mbox file from the saved location and upload it into the software panel.Import MBOX to Office 365
  4. Here, you can view all emails from MBOX file before importing them to Office 365.import mbox to gmail
  5. After that, click on Export and choose Office 365 option from the given list.Import MBOX to Office 365
  6. At last, enter Office 365 login details and hit on the Save button.Import MBOX file to Office 365

Done! Hence, you can easily import MBOX to Office 365 account in just a few simple clicks.

Benefits of Using MBOX to Office 365 Converter

This automated tool offers various advanced features that help users to import MBOX into Outlook 365 account with ease. Know what are the major characteristics of this MBOX to Office 365 migrator.

  • Import Multiple MBOX Files: This software offers a batch mode feature that allows users to import multiple .mbox files to O365 account in a single attempt. Most importantly while performing this batch import you will not lose a single bit of your data.
  • Simple User Interface: The MBOX to Office 365 Converter tool comes with sure friendly working panel. Any novice user operates this tool and open MBOX file in Outlook 365 webmail account without any assistance.
  • Export MBOX to Various Formats: The tool has various saving options that enables you to convert MBOX to PST, PDF, TXT, EML, HTMl, and many more formats.
  • Advanced Search Option: One of the outstanding features of this tool is its search option. Using this search tool you can upload selective emails from the MBOX file to Office 365 account. Some of the filters are – to, from, subject, property name and id, date range, and many more.
  • Windows Compatibility: This tool can be easily installed and operated on any Windows OS version with ease. You can use this tool on Windows 11, 10, 8, XP, Vista, and all other previous versions.
  • Preserve Data Integrity: While one import MBOX to Office 365 account this tool upholds the mailbox folder and sub-folder structure and hierarchy. The imported data will be in the same format as the original.
  • Maintain Folder Hierarchy: While importing emails from MBOX file to Office 365 this tool preserves the email folder and sub-folder hierarchy. There will be no alteration in data formatting.

download MBOX to Office 365 Import Tool


This write is the complete guide to import MBOX to Office 365 webmail account with attachments. Here, we have discussed both manual and automated solutions to open MBOX file in Outlook 365. However, an automated solution enables you to directly complete the importing process without any external help. You can use the demo version of this tool and import MBOX to Outlook 365 account without any data loss. After getting a satisfactory result, switch to the licensed version of the software.

Back to top button