How to Import a .Mbox File to Gmail

Quick and easy-to-follow guide for Google Workspace administrators

What you need to import a mbox file to Gmail

  • Google Workspace doesn’t offer a feature that allows you to import the .mbox files you can export using Google Takeout.
  • However, there is a way to do it using Mozilla Thunderbird.

How to import a mbox file to Gmail step-by-step with images

Step 1

How To Import A .MBOX File To Gmail - Step 1

First, download and install the free mail client Mozilla Thunderbird from https://www.thunderbird.net/en-US/

Next, go to https://addons.thunderbird.net/en-us/thunderbird/addon/importexporttools/ and download this add-on to import the .mbox to Thunderbird. Click the yellow Download now button to download it.

Step 2

How To Import A .MBOX File To Gmail - Step 2

Open Mozilla, click the menu icon in the top right (three horizontal lines), and select Add-ons.

Step 3

How To Import A .MBOX File To Gmail - Step 3

This opens the Add-ons Manager in Mozilla. Now click the gear icon to the right and select Install Add-on From File…

Step 4

How To Import A .MBOX File To Gmail - Step 4

Select the Add-on and click Open.

Step 5

How To Import A .MBOX File To Gmail - Step 5

Click Install Now to confirm the installation.

Step 6

How To Import A .MBOX File To Gmail - Step 6

Restart Thunderbird. Click Restart now.

Step 7

How To Import A .MBOX File To Gmail - Step 7

After restarting, the Add-on is ready to use.

Right-click on Local Folders to the left, then hover over ImportExportTools and select Import mbox file.

Step 8

How To Import A .MBOX File To Gmail - Step 8

Select Import directly one or more mbox files and click OK.

Step 9

How To Import A .MBOX File To Gmail - Step 9

Select your mbox file and click Open.

Step 10

How To Import A .MBOX File To Gmail - Step 10

The mbox folder appears to the left under Local Folders. Left-click, then hold and drag it onto a folder under your Google Workspace email. ​Then release the left button to drop it there.

Step 11

How To Import A .MBOX File To Gmail - Step 11

The folder gets copied to your Google Workspace mailbox.

Step 12

How To Import A .MBOX File To Gmail - Step 12

The folder gets copied to your Google Workspace mailbox.

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