Can Thunderbird Import PST Files?

can thunderbird import pst files

If you’re looking for an alternative to Microsoft Outlook, Mozilla Thunderbird is one of the most popular email clients available. This is a free and open-source email client that offers a variety of features such as email management, calendar, news feed reader and more. However, if you use Outlook and have a collection of PST files, you may wonder if Thunderbird can import them. This article will find out if can Thunderbird import PST files and provide a solution to make the process easier.

What is PST file?

Before we look into whether Thunderbird can open PST files, let’s first understand what a PST file is. A PST file is a Personal Storage Table file created by Microsoft Outlook to store emails, contacts, calendar events, and other data. They are basically databases that contain all your Outlook data in one file.

Can Thunderbird Import PST files?

The short answer is no. Thunderbird cannot directly import PST file. Thunderbird uses a different file format called MBOX. This is an open-source file format used by several email clients such as Thunderbird and Apple Mail. MBOX files are more versatile than PST files as they can be easily imported into other email clients.

However, there is a way to indirectly import PST files into Thunderbird. Let’s look at some methods.

Note: If you want to import PST to Thunderbird without Outlook application, then the only solution is to use the best PST Converter Tool from Yota on the system.

Method 1: Use Outlook Application

The easiest way to solve your query can Thunderbird import PST files using your Outlook account. The method is as follows.

  1. Open Thunderbird and go to Tools > Import
  2. Select Email and click Next.
  3. Select “Outlook” and click “Next”.
  4. Enter your Outlook login information and click Next.
  5. Select the PST file to import and click Next.
  6. Select the folder to import and click Next.
  7. Click Finish to start the import process.

This method works if you have access to your Outlook account. However, if you don’t have access to your Outlook account or don’t want to use your Outlook account, there are other methods available.

Method 2: Import PST Files into Thunderbird via PST File Converter Tool

Another way to import PST files into Thunderbird is to use Yota PST Conversion Tool. This is a powerful utility that allows you to directly upload PST file to Thunderbird quickly and easily. It can handle large PST files and keep the original data during conversion. You can transfer multiple PST files at once and keep the folder structure of the original files. This is a simple tool that allows you to add PST file in Thunderbird account with just a few clicks. It has a user-friendly interface and supports all versions of Outlook.

Method 3: Manually Convert PST File to MBOX

If you don’t want to use a third-party tool, you can also manually export PST files to MBOX format. The method is as follows.

  1. Open Outlook and select the PST file you want to convert.
  2. Go to File > Export > Export to File.
  3. Select Comma Separated Values and click Next.
  4. Select the folder to export and click Next.
  5. Select a location to save the exported file and click Finish.
  6. Open the exported file in Microsoft Excel and remove the first row.
  7. Save the file as a CSV file.
  8. Open Thunderbird and create a new folder for the imported data.
  9. Select Tools > Import > Address Book
  10. Select Text File (LDIF, .tab, .csv, .txt) and click Next.
  11. Browse to the exported CSV file and click Next.
  12. Map the CSV file fields to Thunderbird address book fields and click Finish.
  13. Repeat this process for other folders in the PST file, such as Calendar Events and Tasks.

After importing all your data, you can organize it in Thunderbird according to your needs.
This method takes longer than using third-party tools, but it’s free and requires no additional software.


In conclusion, Thunderbird does not support direct import the PST files. However, there are several ways to indirectly import PST files into Thunderbird. You can convert his PST file to MBOX format using your Outlook account manually. Whatever method you choose, be sure to back up your data before starting the process to avoid data loss. I hope you learned can Thunderbird import PST files with or without Outlook.