How Do I Open MBOX Folder in Thunderbird? Top 4 Finest Solutions

Bhawna Barwal | email conversion file conversion software technology | 4 minutes read | Last updated on May 24th, 2025,

Introduction

This article explains on how do I open MBOX folder in Thunderbird with the best possible solutions. There will be four methods discussed out of which three will be manual methods and one will be an automated one. Users can simply go with any method. However, if you want a restriction-free method then It is recommended to only go with an automated MBOX Converter, as this method is more suitable if you have a larger quantity of MBOX files.

How Do I Open MBOX Folder in Thunderbird via ImportExportNG Tools?

  1. Open Thunderbird email client on Windows OS.
  2. Run your Thunderbird app, click on Tools option.
  3. Move to Add-ons  and Themes.
  4. Look for a “ImportExportNG” option.
  5. Now click on the Add to Thunderbird.
  6. Then go to a local folder, and go with ImportExportTools NG plugin.
  7. Click on the Import MBOX files then individual MBOX files.
  8. Browse for MBOX file click on it and press on Open option.
  9. Now view imported MBOX file in local folder in your Thunderbird app.

Constraint Involved in Manual Method

When you import MBOX file to Thunderbird by a manual method you have to come across with certain limitations let’s discuss below:

  • Users can lose attachment element from email.
  • Also, manual method causes data loss issues.
  • Must have Thunderbird installed in your PC.
  • Does not seem feasible for large-quantity files conversion.

Open MBOX Folder in Thunderbird via Import

  1. For this make a zip for MBOX file.
  2. Run Thunderbird app and go with Tools option.
  3. Click on the Import and select Import from a file.
  4. Browse that ZIP file and move ahead clicking on the Next button.
  5. Click on the Start import options and open you r MBOX files in Thunderbird.

Import MBOX into Thunderbird via Gmail App

Let’s look at the process to import MBOX to Gmail in order to open MBOX files in Thunderbird.

  • Open your Thunderbird.
  • Simply go to “File” tab.
  • Now go with New Option and select Existing Mail Account.
  • Enter required login credentials, now press on the Continue.
  • Now, account setting gets verified by Thunderbird. Now hit the Next tab.
  • Reopen your Thunderbird email app and look at all your MBOX data.

MBOX to Thunderbird Tool to Open MBOX Folder in Thunderbird

BitData Migration MBOX to Thunderbird Tool helps to open bulk MBOX files in Thunderbird email app at once. Also, no data loss incurs here in this method. The app supports conversion of MBOX email file of large-sized. And this tool allows conversion of MBOX files like MBS, MBX, MBOXO, etc. And the software is also does not make mandatory to install MBOX based email clients for example, Thunderbird, Apple Mail, and Sea Monkey, etc. MBOX to Thunderbird Tool provides options to choose multiple MBOX files. And also gives preference to load whole folder. These options lead to convert bulk data of MBOX into Thunderbird email application in single round.

The application enables previewing of all the selected MBOX files before the conversion. It provides users accurate results without any error. Without attaining knowledge in any specific field one can simply run it. There is option for a selective conversion from MBOX to Thunderbird.  And it keeps the data integrity of MBOX files in the output. Users can save the resultants of the file at the desired location in the system. The tool also enables to view log-report that contains complete information of imported files. Users have option to install this app on Windows and Mac. And one can also utilize free demo.

How Do I Open MBOX Folder in Thunderbird? –Follow 5 Easy Steps

Step 1: Install MBOX to Thunderbird Converter on Windows.

Step2: Click on the Add Files option and use any option “Select Files” or “Select Folder” option.

Step3: Now select file and preview details. Move further pressing on the Next tab.

Step4: Choose the precise saving option Thunderbird from the list of various saving options. Choose particular saving path to save converted data in it.

Step5: Click on the “Convert” button and start conversion process. Lastly finish the process clicking Ok button and view the status of conversion in Notepad.

Frequently Asked Questions

In which Operating System MBOX to Thunderbird Tool can work?

Answer: MBOX to Thunderbird Tool is compatible with all Windows OS editions for example Windows 11, Windows 10, Windows 8, Windows 8.1, Windows XP, Windows Vista, etc.  And this tool also runs on each and every Mac Operating Systems editions for example 10.14 Mojave, 13, Mountain Lion, 12 Monterey, Ventura, 11 Big Sur, 10.13 High Sierra, 10.15 Catalina, OS X 10.11 El Capitan, 10.12 Sierra, OS X 10.11 El Capitan, 10.9 Mavericks, 10.10 Yosemite,  etc.

Will it require technical assistance to understand working of MBOX to Thunderbird Tool?

Answer:  No, the software has been made with an interactive GUI interface. Hence, one can simply open MBOX files to Thunderbird without any technical knowledge.

End Note

After knowing the fact there are lots of restriction in manual methods. We have concluded that the best solution for how do I open MBOX folder in Thunderbird is one and only MBOX to Thunderbird Tool. Users are free to take a demo option that enables 25 email messages conversion of MBOX files without any charges.