How to Import MBOX to Office 365 Mailbox? Manual Method

This blog will explain the method to import MBOX to Office 365 account with all details like reasons, why Office 365, manual methods & limitations, and a professional MBOX to Office 365 migration tool.

Read the complete article first and decide the best method that suits your needs best.

MBOX is a format that is used to store emails in a folder. It’s a popular format and accepted by multiple email clients. And Office 365 is a web-based suite which have multiple advanced and productive apps to maintain professional and smooth work.

After all, upgrading to the Office 365 environment from desktop-based products naturally boosts productivity, but if the migration is shoddy, it will result in data loss. Thus, no productive results for the organization.

Through this how-to guide, we will explain step-by-step instructions that can help you import MBOX to Office 365 mailbox. As long as the steps are carried out systematically, MBOX to Office 365 migration will be free from errors and costs.

Let’s start the MBOX to Office 365 migration process using manual and paid solutions.

How to Import MBOX to Office 365?

These are the short steps of the expert solution, which are mentioned after the manual method. Understand the process, and check out the tool to upload MBOX files to Office 365:

• Step 1: Open MBOX to Office 365 migrator tool.
• Step 2: Add MBOX files using “Select Files/Folders”.
• Step 3: Check the box of needed folders.
• Step 4: Choose “Office 365” as the saving option.
• Step 5: Put the login details of O365.
• Step 6: Click on the “Convert” button to import MBOX to Office 365.

How to Import MBOX to Outlook 365 Manually?

Download and configure Thunderbird in advance to start the process. We are using Thunderbird because it supports both MBOX and Office 365, so we can easily perform MBOX to Office 365 migration:

In the first step, we will import orphan MBOX file to Thunderbird account, and then in the second step, we will configure Outlook 365 in the Thunderbird application. And in the last step, we will import MBOX to Office 365 account from a Thunderbird account.

#1: Import Data File to Thunderbird

1. Firstly, go to the “Tools” menu and click on “Add-ons and Themes” from the list of available options.
2. Then type “ImportExportTools NG” and click on the “Search” icon in the “Search Bar”.
3. In the new window, hit the “Add to Thunderbird” button corresponding to the relevant add-on.
4. After that, click the “Add” button to finalize the add-on installation.
5. Now, close and restart the Thunderbird email client to import MBOX to Office 365.
6. Afterward, look for the “Local Folders” mailbox on the Thunderbird screen and right-click on it.
7. Then select “ImportExportTools NG” >> “Import MBOX File” to open up the MBOX import window.

   

8. After that, choose the “Import One or More MBOX Files” option and click on “OK”.

   

9. In the window that appears, select the “MBOX file(s)” that you want to import to Office 365. After that, click on “Open”.

   

#2: Connect Office 365 in Thunderbird

1. Run Thunderbird on your computer to import MBOX to Office 365.
2. For old Thunderbird users, go to “Tools” >> “Account Settings”.
3. Select “Add Mail Account” from the “Account Actions”.

   

4. Once you have the following screen, enter your name, email address (Office 365), and password for the email address. Once done, hit “Continue”.

   

5. The new screen shows default settings for “IMAP and POP” configuration. Here, choose the IMAP radio button. After that, click on “Done”.

   

6. A new window will appear for confirmation. Here, type the password and click on “Sign In”.

   

7. If the read and write access is not provided for IMAP configuration, the application may require you to request access from the Office 365 admin. Approve it if you have the Office 365 admin ID, or notify the person if it’s with someone else.

   

8. Upon successful configuration of the Office 365 account, all its emails will start appearing on the Thunderbird page.

#3: Import MBOX to Office 365

1. The files will be imported under the Local Folder section. Now, open the folder, and select all the emails.
2. Then, right-click and bring your cursor on “Copy To” >> [your Office 365 account] and proceed to select the folder in which you want to import MBOX to Office 365.

   

3. And your MBOX to Office 365 migration process is completed.

If your MBOX file contains professional data and you want to import it into Office 365 directly, then go for a professional solution like we have suggested.

Complete Working Steps to Import MBOX to Office 365 Account

1. Download and install the MBOX to Office 365 migration tool.

   

2. Upload the single or multiple MBOX files using the “Select Files” and “Select Folders” options.

   

3. All the available data will appear, and check the required folders and subfolders from here, and click on the “Next” button to import MBOX to Office 365.

   

4. Click on the “Select Saving Option”, scroll down, and choose the “Office 365” option from the dropdown.

   

5. Select the “Filter Options” tab and enable the “Use Advanced Settings” for selective MBOX to Office migration.

   

6. Enable the “Change Language” option to map the folder as per your choice.

   

7. Enter the email address of your Office 365 account.

   

8. Then a window will appear and put the email address and password again and click on the “Continue” button.

   

9. The MBOX to Office 365 migration live process will start on the screen.

   

Final Thoughts

It’s not easy to migrate email clients’ databases over to a SaaS solution like Office 365. Fortunately for MBOX users, there is a RecoveryTools MBOX to Office 365 migrator to get the job done. Whether it’s convenience or accuracy, this professional solution stands way above the free methods. All you need to do is take note of the instructions provided in the video to easily import MBOX to Office 365.