Step-by-Step Guide Save Thunderbird Email as MBOX

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Whenever a user tries to export Thunderbird emails on local machine, by default it is saved as EML file. However, most of the time users wants to save Thunderbird email as MBOX file because it is supported by various other email application also such as Eudora Mail, Netscape Mail, Entourage, etc. Therefore, to export Thunderbird mail as MBOX format, user can use an add-one utility i.e. ImportExportTools by Mozilla Thunderbird. Now, to save the email as MBOX, follow the steps mentioned below:

Download and Install ImportExportTools Add-on

To download and install ImportExportTools add-on in Thunderbird, follow the steps mentioned below:

Step 1: First of all, a user needs to visit the website mentioned below: https://addons.mozilla.org/en-us/thunderbird/addon/importexporttools/

Step 2: Then, click on Download Now>> Save file >> OK button

Step 3: Start Mozilla Thunderbird application on your local machine

Step 4: Navigate to Tools>> Addons >> Extensions and click on Gear Icon

Step 5: Select the Install add-on from file option and Browse the location where you have save the downloaded .xpi file and click on Open button

Step 6: When the installation finish, click on Install Now button and exit Thunderbird

Step 7: To confirm, start the Thunderbird again and check Tools >> ImportExportTools >> import mbox file command.

Save Thunderbird email as MBOX file format
Now, to export Thunderbird mail as MBOX format, follow the step-wise instructions mentioned below:

Step 1: Open Mozilla Thunderbird application on your system
Step 2: Now, select the message(s) that you want to save as MBOX file
Step 3: After that, right-click on the selected messages and select the Save selected message option