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How to Import MBOX File into Thunderbird?

Users are interested in switching to the free and open-source email software Mozilla Thunderbird because of the numerous helpful features it provides. It is necessary for them to import MBOX file into Thunderbird in order to move their emails and other data. This article outlines the step-by-step process for importing MBOX files into Mozilla Thunderbird, including all of the relevant details.

The Mozilla Foundation is responsible for developing the free desktop-based email client known as Thunderbird, which is compatible with several platforms. Mozilla Thunderbird gives users the ability to setup multiple email accounts, much as Microsoft Outlook does, and they may do so by utilizing IMAP or POP. The email client includes a variety of features, including those to handle email, establish contacts, tasks, and calendar events, and more.

When you set up an email account with Thunderbird, the data for the mailbox is saved locally in the form of an MBOX file. This file format is one of the most widely used ones for storing digital information. In addition to Thunderbird, a wide variety of email clients, including Spicebird, Netscape, Entourage, PocoMail, Apple Mail, Sylpheed, Eudora, Evolution, Mulberry, and SeaMonkey, utilize and support the MBOX file format.

Opening an MBOX file requires importing it into an email client that supports the MBOX file format. The MBOX file is most often read with Mozilla Thunderbird, a free and open-source email client that works on both Windows and Mac computers. On the other hand, transferring your Thunderbird profile to a new computer is a necessary step if you decide to swap computers. As a result, you’ll need to import MBOX file into Thunderbird on the new computer.

Reasons Why Users Want to Open MBOX File in Thunderbird

Let us first examine the scenario of customers who seek to utilize Mozilla Thunderbird on Windows OS in order to open MBOX file in Thunderbird.

“Hello, I was using Apple Mail at my old workplace; however, I have now switched jobs and no longer use it.” I have an MBOX file that is associated with my Apple Mail account, and I would want to import it into my new email client. Since I will be using Thunderbird at my new workplace, it is imperative that I import MBOX file into Thunderbird as soon as possible. Could anybody assist me with the same thing?”

“Hello! I have been utilizing Thunderbird for quite some time, but lately my system became damaged, and as a result, I was forced to remove my previous version of Thunderbird. However, my previous MBOX File is still there, and I would want to import it into my new profile. Because I am unable to complete the task, I am seeking for a solution to import MBOX file into Thunderbird. If anybody has any ideas, please let me know.”

Manual Methods to Import MBOX File into Thunderbird

Here complete process explained in 2 steps. Follow all the steps carefully to open MBOX file in Thunderbird.

Step 1: Download “ImportExportTools NG” Thunderbird Extension

Extensions and add-ons, sometimes known as “add-ons,” are a means through which extra features may be added to Mozilla Thunderbird. One such add-on is called ImportExportTools NG, and it does not cost anything to use it. It is able to assist to import MBOX file into Thunderbird versions 68 and above.

  1. Installing the free add-on is as simple as following the instructions shown below:
  2. Start Thunderbird by going to the Programs menu, selecting Mozilla Thunderbird, and then clicking the Start button.
  3. In Thunderbird, choose the symbol that looks like three horizontal lines to see the menu.
  4. Next, from the drop-down menu, choose the Add-ons and Themes option and click it to import MBOX file into Thunderbird.
  5. In the search field, type “ImportExportTools NG” and then hit the Enter key on your keyboard.
  6. In the new window that has shown, choose the ImportExportTools NG button and then hit on the Add to Thunderbird button that is located next to it.
  7. To provide the add-on the necessary rights, choose the Add button from the toolbar.
  8. Finally, after the add-on installation has been completed successfully, restart Mozilla Thunderbird.
  9. Proceed now to the next stage in order to finish off the manual procedure to import MBOX file into Thunderbird.

Also Read: How to Import MBOX to Microsoft Outlook All Versions?

Step 2: Import MBOX File into Thunderbird

Proceed in the manner outlined in the following steps:

  1. In Thunderbird, right-click the inbox that you wish to import MBOX file into Thunderbird. This will bring up the context menu.
  2. Following that, a variety of alternatives will show up; to begin the process, pick the ImportExportTools NG >> Import MBOX file option from the menu that appears.

    import mbox file into thunderbird

  3. Choose “import directly one or more MBOX files” in the popup labelled Files MBOX import that subsequently displays, and then click the OK button.

    open MBOX file in Thunderbird

  4. The MBOX file should thereafter be located on the hard disc in the spot where it was first saved.
  5. import MBOX file into Thunderbird email client, click on the Open button.
  6. The emails are successfully imported into Thunderbird as a result of this action.

Drawbacks of Using Manual Methods

  • Moving several MBOX files at once is not possible for users.
  • To import MBOX file into Thunderbird, Thunderbird does not come equipped with a built-in utility. Installing the add-on is the first step that must be taken.
  • It often results in missing attachments as well as damaged email properties.
  • The manual processes take a significant amount of time and effort to complete.

Final Words

In addition to Thunderbird, a great number of other email clients, including Spicebird, Entourage, PocoMail, AppleMail, Eudora, SeaMonkey, and so on, are able to generate and support the MBOX file format. You may find that you wish to switch from your current email client to Thunderbird due to the many valuable features that Thunderbird provides. In order to accomplish this goal, you will need to do the steps outlined in this article to manually import MBOX file into Thunderbird. Nevertheless, the manual method often fails to import the attachments or any other material included in the emails.


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