How to Convert Thunderbird to PST File? Top Ways

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Published on
February 26th, 2025


1 minute Read

Summary: Users often switch email clients to improve productivity in their business operations. Similarly, many users want to switch from Thunderbird to Microsoft Office 365 and seek a solution. To achieve this, converting Thunderbird emails to PST format is necessary, allowing for a smooth migration to Office 365. However, this process can be complex, especially for both technical and non-technical users.

Further, we will provide the topmost techniques to help you accomplish the task efficiently. One of the best ways is the professional Thunderbird Backup Tool as it ends the process quickly with 100% data security. Apart from this, it offers a manual solution. To choose the best approach, read both of them and then choose according to your needs. 

Without wasting more time, let’s start discussing all the methods one by one. 

How Do I Convert Thunderbird Email to Outlook?

After reading this section, all your worries will be removed, as it provides effective solutions. It includes native and automated techniques. However, most users prefer a professional approach to converting multiple emails into PST, as a manual process can lead to huge data loss. Additionally, there is no guarantee that your data integrity will remain intact throughout. Still, we will explore the manual and its detailed steps to perform it. 

#1 Manually Export Thunderbird to PST

Read the section below to learn about the free method to convert Thunderbird to PST. 

Part 1. Extract Thunderbird Emails

First of all, you have to Export Thunderbird to EML. To do this, follow the below instructions. Before you start, make sure ImportExportTools is added to your Thunderbird application. 

  1. First, run Thunderbird – move to a folder that contains emails for conversion. 
  1. Afterwards, select the email and right-tap. 
  2. Next, pick ImportExportTools – – Export All Messages – – EML Format.
  3. Now, assign the location to save your Thunderbird email in your system.
  4. Later, press Save to start backing up emails. 

Further, follow the below steps to convert Selective emails

  1. To begin, choose the email for Thunderbird emails to PST. 
  2. Later, right-hit on it and then choose Save Selective MessagesEML Format.
  3. After that, select a location to save them on your PC. 

Part 2. Move EML to MS Outlook

Now, follow the steps to Import EML Files to Outlook

  1. First of all, create a new folder inside your Outlook account. 
  2. Now, visit the location where you saved EML files. 
  3. After this, choose email and right-tap on it > Open With > Outlook.
  4. Once your email is opened in Outlook, pick Move To and then the newly created folder.
  5. You have to do this for each email to save EML files into Outlook. 

Part 3. Extract Outlook Emails into PST 

To save Outlook emails to PST on Windows, follow mentioned steps. 

  1. In Outlook, tap File > Open and Export > Import/Export. 
  2. Moving further, tap Export to a File > Outlook Data Files (.PST).
  3. Next, pick the folder with Thunderbird emails. 
  4. Later, set the location to save the resultant PST files on your computer. 
  5. In the end, click Finish

#2 Automated Approach to Convert Thunderbird to PST

MacSonik Thunderbird Email Backup Tool is a reliable and versatile utility that is equipped with various advanced features. Using this software, you can export PST from Thunderbird in bulk or individually. Other than this, it completes the process efficiently without hassle. Additionally, it has an easy-to-use interface that helps users with no technical expertise to use it. Furthermore, it gives features such as conversion without identical emails, selective email conversion, and so on. Using this feature, the process will be fast and effective. Moreover, it keeps the original folder hierarchy maintained. 

Detailed Steps to Export From Outlook to Thunderbird

Here, we will guide you in converting your Thunderbird emails to Outlook PST. First of all, ensure Thunderbird is logged in your system and follow below-discussed steps. 

  1. First, run the Thunderbird Backup Software on your PC. 
  2. Now, this software will automatically extract Thunderbird emails and display them in the tree hierarchy. 
  3. Further, pick the emails to view and tick them to convert into PST. Hit Next
  4. Later, select PST from the drop-list of file format. 
  5. Thereafter, assign the location to save your output PST files in your OS. 
  6. Lastly, click Convert

After this, the process will automatically be started and convert your Thunderbird emails into the PST format. 

Conclusion 

This blog considered all the aspects and provided full-fetched information regarding the thunderbird to PST conversion. In this post, we explain both manual and professional approaches. You can read and choose the best method to convert Thunderbird to PST. Still, many users prefer professional techniques to skip or avoid human error. Moreover, automated software makes more easier to perform the task than the manual way. Also, you will achieve outcomes in no time with minutiae data integrity. 

Frequently Asked Question 

Q1. How to convert Thunderbird emails to PST?

To do this process, follow the mentioned steps correctly. 

1. First, extract your Thunderbird emails into EML Format. 
2. Then, move your EML files into MS Outlook. 
3. Next, export Outlook emails into PST format. 

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