User ManualEmail Discussion Group User Guide FAQ'SHow to Import an MBOX using Thunderbird

How to Import an MBOX using Thunderbird

A MBOX file is one file containing many email messages in a row. can Import or Export your Searchable Web Archive from or to the MBOX format.

Thunderbird is a free open source email reader

For the Windows, Macintosh and Linux Operating Systems.

Many people consider Thunderbird the best email reader available.  It has a lot of features and optional functions that can be added.

Thunderbird needs the ImportExportTools Add-on

ImportExportTools will add a new menu item allowing you to import (or export) an mbox.

So the trick is to get the Add-on installed and Thunderbird Restarted, then you can import the mbox file.

Copy the above URL to your web browser address bar

Unfortunately, ImportExportTools is not one of the built in Add-ons that you can install from within Thunderbird.

Save the Download to your computer - will end in XPI

Install the downloaded Add-on

Open the Tools menu, and choose Add-ons

A new tab will open.

Click on Extensions menu on left hand side, and open the Setting (Gear) drop down

Click on - Install Add-on From File ...

Navigate to your Download folder and find the file


and click on the Open button

Acknowledge the - Install add-ons only from authors you trust

Click on the Install Now button

Thunderbird shuts down and opens back up with a new menu item

At the very bottom of the Tools menu, is ImportExportTools

Get into a Thunderbird email account, such as Local Folders

Click on Tools -> ImportExportTools -> Import mbox file

Radio Button = Import directly from one or more mbox files

Click OK

Select the file and click Open

You now have a new folder in your Thunderbird sidebar that contains your imported messages


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