Get solution on Thunderbird to PST conversion

  Admin |   22-Sep-21

In the communication field, the trend of email clients is very necessary and permanent which is needed by everyone nowadays. Therefore, data transfer from one email client to another is also a common problem and one of them is “How to migrate Thunderbird messages to PST?”.

So if you are looking for the solution to this question then this post is the right guideline for you.

About Mozilla Thunderbird and Microsoft Outlook

Mozilla Thunderbird is an open-source application that saves data to local drives in MBOX and Maildir. In contrast, to open or import data into Outlook, the user needs a PST or MSG file.

So how to convert Thunderbird to PST is a very exploratory topic among users. Here we will explain in a simple word to convert mailbox for Outlook and also provide a hassle-free solution to open in a PST.

Try Thunderbird exporter tool to move Thunderbird mailbox to PST, EML, MSG format and get more benefits

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Method of exporting Thunderbird mailbox to PST

Any user who is willing to convert Thunderbird data to Outlook PST can choose any one of the methods mentioned below.

Method 1: Installing the Eudora Email Client

Older versions of Outlook have the option to import Eudora mailboxes, with the help of which the user can also migrate Thunderbird data.

  1. Install Eudora on the system where the Outlook application is already installed and configure it with a dummy account.
  2. Copy and paste the Thunderbird mailbox to Eudora’s mailbox location (C:\Documents and Settings\USER\Application Data\Qualcomm\Eudora\)
  3. Now change the extension of the mailbox as inbox mbox to inbox mbx. MBOX, MBX, and MBS are all family formats and form the same data structure.
  4. Run Microsoft Outlook email client and click on the File tab.
  5. Select Import-Export tool option >> Choose “import internet mail and address” in the pop-up window and press the next button.
  6. Choose Eudora (Pro and Light) 2x, 3x, 4x, option in wizard then click on the Next button.
  7. Browse the Eudora file location and select your Mozilla Thunderbird data then press next.
  8. Save the destination where you want to import Thunderbird mailbox in PST format.
  9. Now click on the finish button and wait for the process to end. After that, you can restart MS Outlook and check the mailbox.

Limitation of the first method

  • The user does not follow the above method with the latest version of MS Outlook.
  • You can only migrate one Thunderbird mailbox at a time.
  • There is every possibility of the folder structure being shattered

Method 2: Thunderbird to PST conversion with Automated Tool

If you don’t want a long walkthrough method then this simple solution is really just for you. With the automated application, any user can convert Thunderbird email to PST in a few easy clicks.

MailsDaddy Thunderbird to Outlook Converter is a very useful and efficient program that provides accurate results with multiple features to a user. The simple interface of the solution does not require any technical knowledge and you can export multiple mailboxes from Thunderbird to PST at once.

Steps to convert Thunderbird messages to PST

  • Download Thunderbird to PST Converter Tool, install and run on any Windows-based operating system.
  • Launch the program and click the Browse button >> Press the auto-load button to load the entire TB mailbox at once.


(If you don’t have a Thunderbird mailbox installed, you can also browse manually.)

  • After loading and scanning the mailbox, click on the Export button and select PST file format with a single or separate PST conversion option.


  • Browse the destination after converting and then press the Export button again to save the data.


You will see a process window of Thunderbird to PST conversion, so wait for it to finish. After that, you can go to the destination and open the data in Outlook 2019, 2016, 2013, 2010, and other earlier versions.


Here we have described how a user can use manual or automatic solutions to migrate Thunderbird mailbox to PST format. Although the Manual method has some limitations, you can use it as per requirement. You can also test the free trial version of the given solution and export 20 emails from each mailbox.


Read more: How to save Gmail Backup Offline?

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