How to import Mozilla Thunderbird to Outlook?

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Try manual or third-party to import Mozilla Thunderbird data into Outlook. Both methods take the user to the destination & help in exporting Thunderbird to Outlook.


Are you looking for a solution to import Mozilla Thunderbird into Outlook? If yes then we have the right tool for you. Also we have shared a manual way to convert Thunderbird data to Outlook. So after you know both the methods, then you can compare which method is good for you.

Why is it necessary to access data from Thunderbird to Outlook?

Mozilla Thunderbird and Outlook are both very popular email clients that are widely used around the world. But everyone is free to choose the email client according to their better convenience. In this way, mail conversion process becomes common when it comes to transfer from one business to another or from Thunderbird to Outlook.

For example, if an organization has Thunderbird data in MBOX/Maildir file format and wants to move data into Outlook for another team or establishment, Outlook does not allow direct opening it as it supports PST files.

Now here we need a method to convert data from Thunderbird to Outlook.

Why is Outlook useful as per the features?

There are many reasons to move data from Thunderbird to Outlook, not just popularity. Outlook has many such features that are rarely seen in Thunderbird and any other email client, due to which Outlook becomes more efficient and preferred than Thunderbird.

  1. Microsoft Outlook application runs and uses in more than 90 different languages.
  2. Android and Windows phones also support an Outlook application that makes data access easier for users.
  3. Password protection and encoding emails prevent the data from unauthorized access or hackers.
  4. Schedule appointments, meeting with the help of the calendar and Time Zone.

More difference

Mozilla Thunderbird Microsoft Outlook
Supported mail format MBOX, Maildir & EML PST & MSG
Spam filter No Yes
Time Zone No Yes
Security measure Medium High
Email Indexing No Yes


Free method of exporting Thunderbird emails to Outlook

Any user who is looking for a free method can use this procedure to open Thunderbird in Outlook. Before performing this conversion, users should install Eudora on their local system with Outlook and Thunderbird. Also, installed and configures Eudora with an email account to follow the below steps:

  1. Copy and paste the Thunderbird mailbox into Eudora’s mailbox and change its mail format ie file-name.mbox to file-name.mbx.
  2. Now open Outlook, go to File tab and select Import-Export Tool
  3. Once the Import-Export window opens, select “Import Internet Mail and Addresses” and click on the Next button.
  4. Select “Eudora Pro and Light (2x, 3x & 4x)” option and Next.
  5. Browse the Eudora default mailbox and select your TB mailbox.
  6. Save the destination and click on finish

After following the steps carefully user can import Thunderbird mailbox to Outlook along with attachment. Now we also want to point out that this free method has some limitations points which leave the users frustrated.

Limitation of Free method of Thunderbird to Outlook conversion

I will be glad if you get the secure result in PST format. But if not, here’s the reason why the method fails.

  • The first reason is with Mailbox you can’t migrate more than one Thunderbird profile at once.
  • Second, this method does not apply to Thunderbird Maildir file or folders.
  • The new version of Outlook does not have the option to import Eudora mailboxes.
  • Having large files can damage the structure of the mailbox and cause attachments to be lost.

Straightforward method to import Thunderbird emails to Outlook

Thunderbird Mailbox saves data in two types (MBOX & Maildir) of format so if we need compatible tool then no other program will be required. Here we highly recommend MailsDaddy Thunderbird to Outlook Converter to convert single or multiple Thunderbird profile to Outlook. It works on both Thunderbird mailboxes alone i.e. user can easily export both mbox and maildir mailboxes from Thunderbird to Outlook with all safety measures.

The software has many advanced features with the help of which the user can easily export two or more mailboxes from Thunderbird to Outlook.

Built on a simple interface, this solution can be installed on any Windows machine and can convert data from Thunderbird to PST, EML, MSG, etc.

Once Thunderbird data exported into PST file format then user can open into any Microsoft Outlook edition like Outlook 2019, 2016, 2013, 2010, 2007 & 2003.

Get more info:


The above article explains both the methods with which one can import data from Thunderbird to Outlook. Also, the given solution overcomes all the drawbacks of the manual method and delivers secure results, due to which millions of third-party solutions are searched on Google every day. By using the free version of MailsDaddy Thunderbird to Outlook Converter, the user can be aware of its features and conversion steps.


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