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How to Import PST Files to Thunderbird on Mac? Complete Solution!

Published By Mohit Jha
Tej Pratap Shukla
Approved By Tej Pratap Shukla
Published On March 6th, 2024
Reading Time 5 Minutes Reading

Many users want to transfer their PST file into Thunderbird account to access all their emails, contacts, calendars, and all other data in a secure and effortless manner. This helps users not only in the migration process but also allows them to retain their valuable information without manually transferring the entire data. If you are using Mac OS and want to import PST files to Thunderbird, then this blog will guide you step by step. So let’s begin.

Table of Contents:

  1. Reasons to Open PST in Thunderbird
  2. Expert Solution to Import PST Files to Thunderbird
  3. Quick Steps to Open PST Files in Thunderbird
  4. Some Highlighted Features of the Professional Software
  5. Manual Method to Import PST Files to Thunderbird
  6. Conclusion

Reasons to Open PST in Thunderbird

  1. Thunderbird is compatible with almost all operating systems. It is compatible with Windows, Mac OS, Linux, and UNIX. For Linux and UNIX users, in particular, Thunderbird is a better option.
  2. Users can choose to use the various desktop-based email clients for their homes and office. In order to be able to access all emails under one email platform, it is advisable to use Thunderbird.
  3. Thunderbird is a free application. This is another big reason to import PST files to Thunderbird on Mac.
  4. Spam filtering is a great feature of Thunderbird. This is one of the reasons why users want to migrate PST files to Thunderbird.
  5. Data security is one of the main problems faced by users for whom Thunderbird is the best security option. Hence, users don’t have to worry about their data when they try to export files. 

Related Solution: If you want to know how to import PST to eM Client, here is a quick guide

Expert Solution to Import PST Files to Thunderbird

Generally, there is no direct option to transfer PST to Thunderbird. Because Thunderbird supports importing MBOX files. Therefore, you need to first transfer the PST data file to the MBOX file format. To do so, you need to use Mac PST Conversion Tool.

The software allows you to export emails from multiple PST files at once without any size limitations and data loss. It supports exporting PST files from all versions. The tool provides an option to select emails you want to convert. It is also compatible with all versions of Mac OS versions.

Quick Steps to Open PST in Thunderbird 

  1. Run the software on your system and select PST file by clicking on Add File or Add Folder.add pst
  2. Select MBOX file format from the multiple options.Import PST File to Thunderbird Without Outlook via MBOX
  3. Check Advance Settings for filters and more features.filter options
  4. Click on Change and select the location to save the exported exported mbox file
  5. Hit on the Export button to begin the conversion process.

Completed! Now, you can access the exported file from the location you selected above. Afterward, you can import the MBOX file into the Thunderbird application.

To open PST in Thunderbird, first, you need to install the ImportExportTool NG add-on. Afterward Go to Tools and import MBOX file.

Some Highlighted Features of the Professional Software

  • Maintain Folder Structure: The software to import PST to Thunderbird allows users to maintain the folder hierarchy of emails. This feature helps users to find their emails after conversion.
  • Selective Conversion: It provides the date filter options that allow you to export PST files of the required period. This is a great way to save a lot of time and only export the items you need.
  • Compatibility: The tool supports import PST files to Thunderbird on Mac OS X 11.0 (Big Sur) and above versions
  • Export Contacts and Calendar: It exports PST emails in MBOX file format. And if you have contacts and calendar in PST, then it exports contacts in vCard and calendar in ICS file format.
  • No Application Required: The mac software is completely standalone and does not require the support of an email client or any other application installation.
  • Supports All Type PST: No matter whether you have ANSI, UNICODE, or Password-Protected PST, the software is capable to export them without any data loss.

Manual Method to Import PST Files to Thunderbird 

There is no direct method to open PST in Thunderbird as this file format is not supported by the email client, the only option for users is to convert their PST files into MBOX format and then import it in the Thunderbird application. For this users think of third party software or website but they are not trustworthy as you don’t know how your data is treated after you import your file on their servers.

Therefore, it is best to take the help of the above mentioned software, recommended by professionals to access your PST data files in the Thunderbird application. 


Mozilla Thunderbird is one of the most popular email applications that has many useful features. People who want to access the data inside their PST files with Mozilla Thunderbird have to import PST files to Thunderbird. To help users, here we discussed the top method to transfer PST to Thunderbird without installation of any additional software on Mac machines seamlessly.


By Mohit Jha

Mohit is a Microsoft-certified expert who has assisted thousands of clients with Outlook & Microsoft Office 365 issues. He enjoys writing on email clients as well as data migration. He is always excited about giving troubled readers the most up-to-date knowledge, explanation, and refinements.