Import Eudora Mail to Mozilla Thunderbird – Free Guide

Updated On - March 18, 2023 by Henry Bray |

Reading Time: 5 minutes

Are you a Eudora user and want to switch to a more secure email application? If so, here is a look at how you can import Eudora mail to Mozilla Thunderbird. You’ve probably heard of Mozilla Thunderbird. It’s one of the most popular email clients available today. People love it because it gives you a lot of control over how your emails look and feel. Also, Thunderbird is an email client that offers much better security and privacy than Gmail or Outlook. It also has the best spam filters of any free email app. However, it doesn’t support a lot of different file formats. This makes importing your Eudora mail files difficult if you want to keep using Thunderbird as your primary email client. Thankfully, with some know-how, you can easily import your Eudora mail into Thunderbird.

Effective approaches to import Eudora mail to Mozilla Thunderbird

The best thing is Eudora and Thunderbird both rely on the same file format to store users’ data, that is, MBOX format. If you’re a bit familiar with Thunderbird, then you might know that you can add an ImportExportTools NG add-on using which you can import MBOX file into Thunderbird. Below is the step-by-step process for the same.

I’ve divided this process into two phases so it’ll be easy to understand for you. In the first phase, I’ll add the ImportExportTools NG plugin into Thunderbird and then import Eudora MBOX files into Thunderbird. So, let’s elaborate.

 PHASE1: Add ImportExportTools NG into Thunderbird

  • Open Thunderbird email client into your system.
  • Go to the Menu option and click on the Add-ons options from the dropdown menu.1
  • Now search for the ImportExportTools NG plugin and add it to Thunderbird.2
  • Following, make a left click on the Thunderbird and navigate to ImportExportTool NG.3
  • Next, click on the import MBOX file from the dropdown menu.4
  • Now select the radio button adjacent to Import directly one or more mbox files option and click OK.5
  • At last, browse the MBOX files in your system and click Ok.

So, importing Eudora mail into the Thunderbird email client is a simple process. As you can see, the process is simple and doesn’t ask for any technical expertise. However, the method has a few drawbacks, so professionals, especially businesspersons, stay away from this method.

Related Blog: How to Export Thunderbird emails to Outlook PST

 Why shouldn’t you use the manual method?

As mentioned above, the manual method has several drawbacks, which professionals don’t prefer. Some of its drawbacks are as follows:

  1. You cannot import Eudora to Thunderbird in batches. Like if you want to import several Eudora files into several Thunderbird mailboxes, then this method is not for you.
  2. There is no filter option available in this method. Hence, you’ve to import all your Eudora emails, including unwanted ones.
  3. You cannot import Eudora mails into a single folder; also, there are possibilities of data loss.
  4. Last but not least, you have to repeat the same process, again and again, to import multiple Eudora files into Thunderbird, which makes it a lengthy and time-consuming process.

Professional’s Choice to Import Mailbox from Eudora to Thunderbird

Due to the manual method’s restrictions and risk of data loss, several professionals and businesspersons use the automated Eudora migration tool. One that stands above in the automated tool’s competition is Regain MBOX Converter. The tool is specially coded to import and migrate MBOX files into different email clients and servers.

The tool is developed with an advanced algorithm which completely eliminates the risk of data loss and raises the processing speed 5times as compared to manual solutions. Before diving into its other features, let’s know its simple process to import MBOX files into Thunderbird.

Free Download100% Secure Buy NowPrice: $29

 Import Eudora to Thunderbird in simple clicks

  • Step1: Install and open the Regain MBOX converter tool in your system.
  • Step2: Click on the Open option and add MBOX files for the process.
  • Step3: Choose required MBOX files to process into Thunderbird.
  • Step4: Click on the Export option and choose a required option.
  • Step5: Finally, the software starts to import Eudora to Thunderbird.

So, it is the complete process to import MBOX files. Now let me mention some of this tool’s features so you’ll get an idea of why this tool stands above the competition.

 Why Regain MBOX Converter is first-choice of professionals?

  1. The tool works in only read mode and doesn’t make any alteration in the MBOX folder hierarchy and data integrity.
  2. There is no bar on adding several MBOX files to process them simultaneously.
  3. You can add and import MBOX files of any size without any technical expertise and glitches.
  4. You can also import MBOX files into Office 365, Amazon Work email, Gmail, PST, EML, PDF, and several different file formats.
  5. Regain software offers a free variant of the tool, which can be used to check the software skills and capabilities before making any investment in the tool.
  6. Last but not least, the software displays a complete preview of the added MBOX files data before importing them into the desired target location.

So these are the few features of the Regain MBOX converter tool which make it stand above the other MBOX converter tool. In the end, I’ll only suggest you install the free version of the tool and evaluate the tool by yourself.


Thunderbird (which we’ve been using as our primary email client for many years now) doesn’t natively support importing MBOX files. It is an open standard which is compatible with numerous email clients like Eudora, Outlook, Exchange and Gmail. If you’re a Eudora user and want to switch to the Thunderbird email client, you can do it by importing the Eudora mails into Thunderbird. You can import the Eudora mails into Thunderbird by using Regain MBOX converter software.

I hope you now know how to import Eudora mails into Thunderbird email client. If you’re still having any queries regarding this topic, feel free to post them in the comment section below.

Author: Henry Bray

Henry Bray is a young technologist and content a Content Writer at Regain Software, loves to write about MS Outlook, MS Exchange Server, Office 365, Mozilla Thunderbird and many more email applications.

One thought on “Import Eudora Mail to Mozilla Thunderbird – Free Guide”

  1. Avatar Tawanna says:

    This guide was very helpful and straightforward. I was able to successfully import my Eudora emails into Mozilla Thunderbird without any issues. I highly recommend this guide to anyone looking to make the switch!

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