Home » Blog » Import Emails » How to Import PST to Thunderbird Profile: Complete Guide

How to Import PST to Thunderbird Profile: Complete Guide

  Rollins Duke
Rollins Duke   
Published: October 29th, 2025 • 8 Min Read

Summary: This article summarizes 2 best and simplest techniques to open PST file in Thunderbird without Outlook. The entire write-up elaborates on the reasons that led users to convert PST to Thunderbird. If you are looking for the same, this blog is worth the read.

There comes a time when we have a PST file and want to open PST with Thunderbird email client, but don’t know how to do this. In this comprehensive write-up, we will show you with complete information on how to open PST Files in Thunderbird.

Here, BitRecover has explained the proper details to import outlook pst to thunderbird
using the 2 best solutions i.e., Manual and Automated. However, the manual method comes with some limitations that we will discuss in an upcoming section. On the other hand, the automated tool is specially developed to resolve issues instantly.

Table of Content Hide
  1. Objectives to Import Outlook PST to Thunderbird
  2. Manual Way to Open PST File in Thunderbird
  3. Expert Way to Import PST into Thunderbird
  4. Conclusion
  5. Frequently Asked Queries

Objectives to Import Outlook PST to Thunderbird

  • Platform Switch: If you are transitioning from Microsoft Outlook to Mozilla Thunderbird, you’ll need to import your PST files to Thunderbird, ensure the continuity of your email data, and accessibility to include historical emails.
  • Open-Source Advantage: Thunderbird is an open-source email client, which means it offers a cost-effective alternative to proprietary email clients like Outlook. Hence, the Thunderbird PST import process allows you to make the most of Thunderbird’s features without losing your existing data.
  • Customization Options: Thunderbird provides a wide range of add-ons and extensions. Hence you can customize your email client to suit your specific needs. Importing PST files into Thunderbird allows you to leverage these customization options.
  • Improved Performance: Thunderbird is known for its lightweight and efficient performance, even with large email databases. Importing PST to Thunderbird can result in a smoother and more responsive email experience.

Manual Way to Open PST File in Thunderbird

Note That: We are not suggesting manual methods for any process. Yes, if you have limited data to import, then you can choose manual methods. But if you have large data in your PST file, then go for a professional solution. Also, make a copy of the PST file to recover from any data loss situation that might occur during the process.

If you have an orphan PST file, then you must first add the file into Outlook, and then start the process. Open Outlook and hit the File tab and choose the “Open & Export” >> “Import-Export” option. After that, choose “Import from Another Program or File” >> “Outlook Data File (.PST)” and then select the file to import.

  1. Firstly, set MS Outlook as the default program.
  2. Open the Thunderbird email client.
    Display the Thunderbird menu
  3. Thereafter, hit the Menu icon and choose the Tools >> Import icon.
    Import Outlook PST to Thunderbird
  4. Choose the Mail option and hit the Next button.
    Import everything
  5. After that, choose Outlook and click on Next.
    Open PST with Thunderbird
  6. Lastly, browse the PST file and click the Finish icon to start the process.

Now you will get the complete data of the PST file in Thunderbird enabling you to easily open PST in Thunderbird.

Limitations of Manual Method

  • Thunderbird and Outlook are both email clients that must be installed on your machine. Follow the whole process securely.
  • Users may need to downgrade their Thunderbird since the Thunderbird Import PST Wizard feature is disabled in Thunderbird 38.0 and later versions.
  • The manual method doesn’t allow the importing of multiple PST in Thunderbird at once. You need to repeat the process again and again.
  • The latest Thunderbird user receives a No Profile Found Error when trying to import Outlook PST to Thunderbird.
  • Importing crucial PST files to Thunderbird manually consists of higher risk of data loss, misalignment of file structure, email formatting, and the list goes on.
  • Includes numerous complicated steps to convert PST to Thunderbird, making the entire process entirely slow and complicated for multiple or large PST files and incompatible for non-technical users.
Recommended: Expert Method to Open MSG in Thunderbird

Expert Way to Import PST into Thunderbird

Though a traditional technique to open PST in Thunderbird is available, the user should always trust a reliable solution like Outlook PST Converter to secure their data in a better way. This software is well-programmed to open PST files in Thunderbird automatically.

Not only that, the advanced converter tool provides an intuitive interface that manages to support both ANSI and Unicode PST files without any complexities. With the help of this utility, users can easily import Outlook PST to Thunderbird, also guaranteeing complete precision and data integrity.

Watch this Video to Import PST into Thunderbird

How to Open PST File in Thunderbird?

  1. Firstly, download the setup software and install it on your computer. Thereafter, run it properly to import the PST file in Thunderbird.
    Start software
  2. Choose single or multiple PST files/ folders from the file storage location to start the process to open the PST file in Thunderbird.
    Add Outlook PST files
  3. Preview the complete data from the files loaded in the software panel. Select the required PST folders before proceeding with the Next step.
    Mark required folder
  4. Use the advanced filter options to import specific emails from PST to Thunderbird.
    Filters to import PST file to Thunderbird
  5. Thereafter, pick Thunderbird as a saving format from the list of file-saving options provided by the software.
    Select Thunderbird
  6. The software automatically chooses the default destination path to save the resultant data.
    Open PST File in Thunderbird
  7. After that, press on the Next tab to open PST files in Thunderbird.
    Import PST to Thunderbird
  8. Lastly, after completion, open your Thunderbird and see imported data.

Software Features and Benefits

  • Open PST with Thunderbird with All Items: This software facilitates the opening of PST file in Thunderbird with all sorts of components. These items could be maintained attachments, subject, sender, and receiver details.
  • Bulk Import PST to Thunderbird: With this wizard, the user can import PST files and also import Outlook contacts to Thunderbird in batch mode. So, our respective clients can save their crucial time.
  • No Application Installation Required: To import PST in Mozilla Thunderbird, you don’t need to install MS Outlook on your Windows machine. In other words, this is a standalone tool.
  • Access Corrupted PST Files Easily: This tool permits you to repair corrupted PST data into a healthy format after which you can open PST in Thunderbird with the correct data.
  • No Need to Import: The tool automatically imports Outlook PST files to Thunderbird directly. Hence, there is no need to do any import/ export process.
  • Multiple Saving: This utility is also capable to convert PST to EML, EMLX, MBOX, PDF, XPS, DOC, TXT, RTF, etc.
  • Advance Filters: You can enable the required filter to import PST file in Thunderbird by date range, email address, subject, and folders.

To Conclude

In the above blog, we have briefly explained two best techniques to step-by-step open PST files in Thunderbird. Moreover, this software tool offers a demo version that users can fully utilize to evaluate the tool’s proficiency. This demo edition allows importing 25 items from each PST folder in a supportable format. Thereafter, users can activate the licensed key of this product to access PST files in Thunderbird without any restrictions.

Whether the user is an individual searching for a way to access their old emails in Thunderbird, or a gigantic business organization importing numerous accounts, this utmost software utility ensures complete speed, accuracy, and accessibility. Taking advantage of the automated tool is the most efficient and practical decision a user can make.

Commonly Asked Queries

Q 1: Can Thunderbird open PST files?

A: Yes, Thunderbird has an inbuilt option to import Outlook PST files. However, the Import PST wizard facility is available in Thunderbird 31.8.0 and below versions.

Q 2: Can I downgrade Thunderbird email client to use the manual method?

A: Yes, you can download and setup the old Thunderbird version to downgrade it. Moreover, click here to download the Thunderbird 31.8.0 version.

Q 3: Do you know another different method to import PST to Thunderbird?

A: Yes, you can follow the instructions below:

  1. Convert PST to MBOX using the same software.
  2. Set up ImportExportTools NG add-ons in Thunderbird.
  3. Import MBOX to Thunderbird using add-ons.
  4. See imported data under the local folder in Thunderbird.

Q4: What are the common issues faced by users while using traditional methods?

A: This very technique many times lead to issues such as missing attachments, partial transfer of data, damaged or corrupted files, altered formatting, etc. Moreover, it also it does not provide the feature of bulk conversion for large or oversized PST files.

Q5: Can the automated tool handle large or corrupted PST Files?

A: Absolutely! The professional utility has the ability to effectively process damaged or large PST files without any risk of data loss. Not only that, it also convert minor corrupted files and extract data in a readable format import PST to Thunderbird without Outlook


Live Chat