Looking to import messages from an MBOX file back into Gmail?

There are three different options you can use to import MBOX file into Gmail. In this blog post you will see step-by-step instructions for every one of these options.

Introduction

Exporting or downloading an email from Gmail is easy. There are two ways to do this:

1. By downloading individual emails one by one

2. By downloading the entire mailbox via the Admin Console

You will see the downloaded email(s) saved locally in the MBOX (MailBOX) format. But the real catch is that Gmail does not support the MBOX format.

Sounds strange, isn’t it? You will have to necessarily rely on a third-party app to import MBOX files into Gmail. You have three options to import the MBOX files:

Option 1: Using MBOX to PST converter with Outlook Desktop Client

Option 2: Changing the file extension from .mbox to .eml before using Outlook Desktop Client

Option 3: Using Mozilla Thunderbird Desktop Client with ImportExportTools Add-on

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How to Import MBOX into Gmail

How to Import MBOX into Gmail

Do You Have a Desktop Email Client?

Do You Have a Desktop Email Client?
No
No
Install a Desktop Email Client
Install a Desktop Email Client
Thunderbird 
Thunderbird 
Microsoft Outlook
Microsoft Outlook
Using ImportExportTools Add-on
Using an MBOX to PST Converter
Using an MBOX to PST Converter
Yes
Yes
Changing the File Extension to .eml
Changing the File Extension to .eml
Viewer does not support full SVG 1.1

Prerequisites

1. Make sure you have either Microsoft Outlook or Mozilla Thunderbird Desktop Client installed on your PC and connected to the Gmail account where the MBOX file has to be imported.

2. Enable IMAP for the Gmail account you want to import the data back to.

Here is how you can connect Outlook and Thunderbird to the Gmail account.

1. How to set up your email on outlook desktop client

Step 1: Click “File”→”Info” and then click “Account Settings” icon and choose “Account Settings…”

 

 

Set up email on Outlook Desktop Client (1)

 

 

 

Step 2: Click “New…” in the dialog box.

 

Set up email on Outlook Desktop Client (2)

Step 3: Type in your Mail ID and click “Connect.”

    1. After signing in, you will be able to find the different labels on the left-hand side of the Outlook window.

    2. How to Set up Your Email and Install ImportExportTools on Thunderbird Desktop Client

    How to Set up Your Email on Thunderbird Desktop Client

    Step 1: Open Thunderbird Desktop Client and select “Email” under ‘Set up an account:’

    Set up email on Thunderbird Desktop Client (1)

    Step 2: In the dialog box that appears, enter your name, email address, and password.

    Set up email on Thunderbird Desktop Client (2)

    After you log in to the application, the different labels from your Gmail will be visible on the left-hand side of the window.

    How to Install ImportExportTools Add-on

    Step 1: On Thunderbird, click on the hamburger icon on the right-hand corner and click “Add-ons” from the drop down menu.Add-on to import MBOX into Gmail using Thunderbird (1)

    Step 2: Click “ImportExportTools NG.”ImportExportTools Add-on to import MBOX into Gmail (1)

    Step 4: Click “Add to Thunderbird.”
    ImportExportTools Add-on to import MBOX into Gmail (2)
    Step 5: Click “Install Now.”

    Step 6: Restart the application to complete the installation.

    After the application is restarted, use these steps to import MBOX into Gmail using Thunderbird Desktop Client.

    3. How to Turn on IMAP for the Gmail Account

    Step 1: Click the Settings icon that appears on the top right-hand corner of the Gmail mailbox.

    1. Enable IMAP on Gmail (1)

    Step 2: Click “Settings.”

      • Enable IMAP on Gmail (2)

      Step 3: Move to “Forwarding and POP/IMAP” tab. Click “Enable IMAP.” Ignore this step if it has already been enabled.

        • Enable IMAP on Gmail (3)Enable IMAP on Gmail (4)

        Step 4: Click “Save Changes” to complete the action.

          • Enable IMAP on Gmail (5)

          How to import MBox into gmail

          Option 1: How to Import MBox into Gmail Using MBox to PST Converter- Outlook Desktop Client

          While the emails downloaded from Gmail is stored as a local MBOX file, Outlook Desktop Client supports only PST/Outlook Data File. So, to convert an MBOX file into a PST file, you need a separate tool. You can use a converter available online. Once you have successfully derived a PST file, you can import it into Outlook using these steps.

          Step 1: Click “File” on the top left-hand corner of the Outlook window.

          Import MBOX into Gmail using Outlook (1)

          Step 2: Click “Open & Export.”

          Import MBOX into Gmail using Outlook (2)

          Step 3: Click “Import/Export.”

          Import MBOX into Gmail using Outlook (3)

          Step 4: In the dialog box, choose “Import from another program or file” and then click “Next.”

          Import MBOX into Gmail using OUtlook (4)

          Step 5: In the next dialog box, choose “Outlook Data File (.pst)” and click “Next.”

          Import MBOX into Gmail using Outlook (5)

          Step 6: After you browse and choose the file you want to import, click “Replace duplicates with items imported” and then click “Next.”

          Import MBOX into Gmail using Outlook (6)

          Step 7: Choose the folder to import the file into, then click “Import items into the same folder in:” If you have multiple emails synced to Outlook Desktop Client, choose the email ID you want the messages back in. After this, click “Finish.”

          Import MBOX into Gmail using Outlook (7)

          All the messages downloaded into MBOX will now be visible under the folder that was chosen earlier

          Option 2: How to Change the File Etension and Import Mbox into Gmail- Outlook Desktop Client

          An easier way would be to manually change the file extension to .eml.

          The MBOX file, by default, is downloaded as a zip file, and you need to extract the files before any changes can be made.

          How to Extract Files from a ZIP Folder

          Step 1: Click the “Extract All” icon on the toolbar at the top of the window.

          Extract MBOX from zip file to import into Gmail (1)

          You will be able to browse and choose the location to which the file needs to be saved. The extracted file will look like this.

          MBOX file to be imported into Gmail (1)

           

          You will now be able to manually change the file extension from .mbox to .eml.

          Step 2: Select the file and right-click on it. On the menu bar that appears, click “Rename.”

          Rename file extension from .mbox to .eml to import into Gmail(1)

          Step 3: Click “Yes” at the bottom of the dialog box.

          Rename confirmation (1)

          After changing the extension manually, the file will look like this.

          EML File (1)

          Now use the following steps to import the EML file into Outlook.

          How to Import an EML File into Outlook Desktop Client

          Step 1: Drag the EML file and drop it under the label of your choice.

          The EML file will be visible under the messages section as seen below.

          MBOX file renamed and imported into Gmail using Outlook (1)

          Step 2: Double click on the message to open it.

          Step 3: Click “Yes.”

          MBOX file renamed and imported into Gmail using Outlook (2)

          Step 4: Click “Open.”

          MBOX file renamed and imported into Gmail using Outlook (2)
          The opened file will display the message that was stored in the downloaded MBOX.

           

          Note: This option is more suitable for when you have a single message stored in the MBOX file. If there are multiple messages in the file, all of them will be displayed under a single message after being imported into Outlook.

          Option 3: How to Import MBox into Gmail- Thunderbird Desktop Client

          Mozilla Thunderbird is a popular open source Outlook alternative. Since Thunderbird supports MBOX files, you can directly import the data onto Thunderbird. Though an add-on tool is required to be installed, this is the simplest of all the options.

          How to Import Your Gmail MBOX Exports into a Gmail Account

          Step 1: Link your Gmail account to Thunderbird Desktop Client and install ImportExportTools add-on using these steps.

          Step 2: Right click on the left-hand pane and select “ImportExportTools.”

          Import MBOX into Gmail using Thunderbird (1)

          Step 3: In the dialog box, choose “Import directly one or more mbox files” and browse through your PC to choose the MBOX file.

          Import MBOX into Gmail using Thunderbird (2)

          Step 4: After choosing the file, click “Open.” The MBOX file will be imported into Thunderbird with a label that’s the same as the file name.

          Step 5: Drag and drop the imported data into the label’s section under your Gmail Account.

          Note: If you are unable to find the restored data on Thunderbird, try restarting the application.

          Limitations of Using Outlook or Thunderbird to Import MBox into Gmail

           

          Is There a Better Way to Download and Restore Gmail?

          g MBOX to PST convertors, changing MBOX file extensions to EML, or using Thunderbird add-on works fine when you have to restore Gmail just for a single user or a limited number of users.

          However, if you are looking to import MBOX to Gmail in bulk, you may have to rely on paid tools or open source tools available on GitHub.

          The most efficient option to avoid the hassles of dealing with MBOX is to have a Gmail backup in place with the help of third-party apps like SysCloud. 

          SysCloud backs up your emails on an incremental basis, allowing you to download and restore it quickly in the event of data loss. If you choose to download emails from SysCloud backup archives, you have the option to directly download it in the PST format.

          You can restore your data through a few simple steps.

          Step 1: Log in to SysCloud.

          Step 2: Click on “Backup”→”Archive & Restore.”

          Archive and Restore (1)

           Step 3: Choose the username whose messages you want to download. 

          Archive and Restore (2)

           Step 4: Choose the label or individual emails that you want to download. 

          Restore emails using SysCloud (1)

           Step 5: Click “Restore” to directly restore the selected labels back into your Gmail. 

          Restore emails using SysCloud (2)

           Step 6: Type in the Gmail ID and click “Restore. ”

          Restore emails using SysCloud (3)

           Step 7: Click “Yes.”

          Restore Confirmation (1)

           

          The process will take a few minutes depending on the number and size of the files. While you wait, you can track the progress under “Backup”→”Reports”→”Restore report”.

          Restore Report (1)

           

          To know more about SysCloud, click here.

           

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