A Simple Method For Adding MBOX Files To Mozilla Thunderbird

mozilla thunderbird

Mozilla Thunderbird stands out as one of the most widely used desktop email applications, providing users with a versatile and cross-platform emailing experience. Many users seek solutions to import MBOX files into Thunderbird, given that MBOX is a commonly used extension by various email clients such as Entourage, Opera Mail, Eudora, and Thunderbird itself.

User Scenarios:

Let’s delve into scenarios where users are keen on using Mozilla Thunderbird to open MBOX files on a Windows OS:

  • System Corruption: Users who faced system corruption and had to reinstall Thunderbird seek guidance on importing their old MBOX files into a new profile.
  • Job Change: Individuals switching jobs and transitioning from Apple Mail to Thunderbird express the need to move their MBOX files urgently.

Now, let’s explore the manual method, which has its limitations, leading us to the recommendation of a sophisticated professional tool.

Manual Method: Importing MBOX to Thunderbird

Phase 1: Installing the Free Add-on: Import Export Tools NG

  • Mozilla Thunderbird allows for enhanced capabilities through add-ons. The ImportExportTools NG add-on facilitates MBOX file import.
  • Download Thunderbird and navigate to the Add-ons section.
  • Search for “Import export tools” and install the Import Export Tools NG add-on.
  • Restart Thunderbird for the add-on to take effect.

Phase 2: Importing MBOX to Thunderbird

Follow these steps:

  • Right-click on the Thunderbird mailbox where you want to import the MBOX file.
  • Select ImportExportTools NG >> Import MBOX file.
  • Choose the option to import one or more MBOX files.
  • Locate the MBOX file on your hard drive and import it into Thunderbird.

Limitations of the Manual Method:

  • time-consuming and complex.
  • There is a risk of misplaced attachments and damaged email homes.
  • Inability to import multiple MBOX files right now.
  • Dependency on an add-on setup

Note: Manual techniques aren’t appropriate for bulk imports and might consume huge effort and time.

Expert-Recommended Method: Automated Solution

To triumph over the limitations, specialists advise the usage of expert software like Softaken Freeware Thunderbird Importer. This tool streamlines the procedure, permitting customers to import more than one MBOX file into Thunderbird. The tool can work with all Windows OS versions such as; Windows 11, Windows 10, Windows 7, Windows 8, Windows 8.1, Windows 2000, Windows Vista, Windows XP, etc.

Noteworthy Key Features of Freeware Thunderbird Importer

  • Efficient and expert answer for bulk MBOX file imports
  • Preserves e-mail attachments and lets in selective exports through the use of date-variety filters.
  • Compatible with the extremely present-day Windows OS variations.


Both guide and automated solutions had been provided, with the automated approach offering simplicity and reliability. Considering the restrictions of guide strategies, experts lean in the direction of self-sufficient utility for its ease of use and stable consequences.

This article gives insights into importing MBOX documents into Thunderbird and the utilization of every guide and automated technique. While both alternatives are to be had, the automatic answer is desired by specialists because of its ease of use and stable consequences. Choose the method that aligns with your requirements.

Read on for the exact facts. Read this Blog: How to Convert/Export MBOX Emails to MS Outlook?