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Best Tactics to Import Outlook to Thunderbird Without Outlook

This article explains the simple methods to import Outlook to Thunderbird. We will discuss the manual and professional approaches to migrating Outlook files to Mozilla Thunderbird. To implement the process, you need to follow the article till to end.

Mozilla Thunderbird is a desktop email client that creates .mbox files. It stores the email, address books, messages, and configuration settings in a separate folder. On the other hand, Outlook is another desktop-based email client that provides access to the emails account database on a laptop or desktop-based emails services without internet connectivity. Sometimes, users need to transfer emails from PST to Thunderbird. Let us discuss some crucial reasons to convert PST files to Mozilla Thunderbird.

Top Causes to Import Outlook to Thunderbird

There are some reasons to migrate Outlook files to Thunderbird. We will mention the following points.

  • Thunderbird files are more compatible with Windows, macOS, Linux, UNIX, and Ubuntu.
  • Spam Filtering options are much better than Outlook and other email client applications.
  • It provides high data security to the users.
  • You can save emails in the archive option with one click.
  • Thunderbird offers users to use of different helpful plugins for multiple usages.

These are some reasons to import Outlook to Thunderbird. Now, we will discuss the simple and secure methods to import PST to Thunderbird without Outlook.

Also Read: Backup Mozilla Thunderbird Emails to Hard Drive

How to Import PST File in Thunderbird?

There are two approaches to convert PST to Thunderbird without Outlook. Firstly, we will discuss the manual method and then move on to the professional approach. Both techniques are secure and reliable to use. Let us discuss detailed information on these methods ahead of this article.

Manual Method to Migrate Outlook to Thunderbird

If you have Outlook and Thunderbird applications on the same device, you can implement this method to transfer emails from PST to Thunderbird. Now, we will discuss all the steps in the below section:

  • You need to set Outlook your default program for sending/receiving emails. So, click on the start button and tap on the Default Programs >> Set your default programs.
  • Now, choose Outlook from the Programs tab and tap to Set this program as default.
  • Then, hit the OK button to save the changes.
  • Here, open the Thunderbird email client. Then, tap on the Display the Thunderbird Menu option.
  • Now, click on the Tools. Then tap on the Import option.
  • Select your Mail or choose the Import Everything option.
  • Tap on the Next button.
  • Now, Select Outlook for file type, and click on the Next button.
  • Finally, tap on the finish button to complete the process.

These are the steps to import Outlook emails to the Thunderbird email client. But you can face some issues while implementing the manual method. Let us discuss some drawbacks of this method to import Outlook to Thunderbird.

Why Do You Need to Avoid Manual Approach?

We will tell you some reasons for the traditional technique to import Outlook to MBOX format. Let us be familiar with the limitations in the below section.

  • The manual method is highly time-consuming.
  • Required technical skills to execute successfully.
  • Highly chances of data corruption.
  • Required high-speed internet connectivity to transfer emails from PST to Thunderbird.

These are the disadvantages of the manual method to import PST to Thunderbird. To overcome all the drawbacks, you need to follow the upcoming approach.

Quick Way to Convert Outlook PST to Thunderbird

To migrate Outlook data to Mozilla Thunderbird, you should try the professional Outlook PST Converter tool to import Outlook to Thunderbird. You can convert Outlook files to Thunderbird and other email clients like Gmail, Zoho Mail, Yahoo, IMAP, etc.

Moreover, it provides various file formats like MBOX, VCF, MSG, DOCX, PDF, EML, etc. There are features available to migrate or backup emails without attachment files. You can remove the identical emails before the conversion. Also, data filter and task filer options are available. It is the most secure and reliable tool to convert PST to Thunderbird without Outlook. Additionally, this advanced tool also can migrate PST to Office 365 within a few steps.


We have explained both manual and professional solutions to import Outlook to Thunderbird. The manual approach has some limitations that’s why it is not the correct decision to migrate Outlook to MBOX format. On the other hand, we will recommend the professional tool to overcome all the limitations and convert Outlook files to MBOX format. This professional tool works with the latest technology that helps in providing error-free solutions.

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