Best Ways to Import MSG Files into Thunderbird Email Client

Summary:The shift between email applications is tricky when the file formats don’t fit right. MSG files built for the Outlook ecosystem don’t support the Mozilla Thunderbird environment. This marks the need to import MSG to Thunderbird for quick data visibility for projects, audit, data migration, or compliance cases. This guide provides the most suitable free way and a smart MSG Converter Tool to import MSG files to Thunderbird with attachments in minimal time.  

“ I have around 45 GB of MSG files downloaded on the PC from my Outlook profile. But I am unsure of how to access them within Thunderbird. Suggest to me the easiest and fastest way for MSG import into Thunderbird without data loss.”

-Kelly Maidsmith

What Makes You Import MSG Files to Thunderbird?

MSG files are transitioned to Thunderbird for the reasons mentioned below:

  • Visibility/accessibility across multiple Operating Systems (Windows, Mac, Linux). 
  • Thunderbird email application allows users to access all their MSG files in a single space without Outlook. 
  • Many users also transition to simplify workflows and reduce Outlook license overhead.
  • To take advantage of an open source, free client with many advanced built-in features and unique extensions.
  • Thunderbird supports EML, MBOX, and many variations of these formats stored in a local directory within the application. 

Effective Ways to Import MSG to Thunderbird 

In this section, we will discuss two top manual ways considered by users for the MSG file import. Also, learn about a reliable and verified professional software that experts generally recommend to ensure accuracy and no loss during the import. 

Free Open MSG Files in Thunderbird

There are two ways to do so, which include using the Outlook and Thunderbird applications. Or, you can directly try renaming from File Explorer. We have explained the complete step-by-step process for each one of them below. 

#1: Convert MSG to Thunderbird with Email Applications 

  1. First, navigate to the directory where the .msg file is located.
  2. Then, right-click on the .msg file, choose Open With, and select Outlook.
  3. Further, in Outlook, select the “File” menu and choose “Save As”.
  4. In the Save As window, from the list of options, choose Text Only.
  5. Afterward, select a location you’d like to save the TXT file to and click on Save.
  6. Now, locate the TXT file you’ve saved, and double-click on it in order to open it up in Notepad
  7. Later, select “File” from the Notepad menu, and then “Save As“.
  8. Now, change the file type from “Text Files” to “All Files” before saving, and add a .eml extension to the end of the filename.
  9. Afterwards, save it and open Thunderbird. Also, install the ImportExportTools NG extension. 
  10. At last, either drag and drop or use the extension to add EML files into Thunderbird

#2: Use the Rename Feature to Import MSG to Thunderbird

  1. Locate your MSG file on the system and right-click it. 
  2. Then, choose to Rename it from the properties. 
  3. After that, add the .eml extension at the end of your MSG file. 
  4. In the end, open the EML file with Thunderbird to view the email content. 

Though these methods are quite helpful, they are lengthy, tricky, and inconvenient for non-technical users. Also, you require the MS Outlook and Thunderbird applications for conversion, and there is no guarantee for accurate results. So, let’s choose a better alternative that makes imports secure, scalable, and optimal. 

Advanced Solution to Import MSG to Thunderbird

Importing MSG files to the Thunderbird email client one by one will be a cumbersome task. Therefore, for batch processing, use the MSG Converter that imports MSG files in bulk, ensuring 100% data authenticity. Also, it not only supports direct migration to Thunderbird but to other popular email clients as well. After importing the MSG files, it ensures that the original folder structure is preserved. 

Simplified Steps to Migrate MSG Files to Thunderbird

  1. Begin by downloading and installing the converter tool. Choose Single File/Multiple Files Mode. Tap Next.
Import MSG to Thunderbird step 1
  1. Now, press Select File, browse the MSG file, and upload it. Click Next.
Import MSG to Thunderbird step 2
  1. Further, from the folder tree structure, pick the desired folders and preview them. Select and click Next.
Import MSG to Thunderbird step 3
  1. Later, pick Thunderbird from the available list of Email Clients. Apply the filters.
Import MSG to Thunderbird step 4
  1. Finally, choose where you want the recovered files to be stored, confirm the connection details, and press OK to start the recovery.
Import MSG to Thunderbird step 5

Conclusion 

The task to import MSG to Thunderbird becomes straightforward once you understand the format gap and the right methods. Manual methods work appropriately for a few individual MSG files, but when it come sto bulk conversion, you need speed and flexibility. Then, using the MSG File Converter is the best option. It ensures IT teams, support departments, and admins can safely move Outlook-based MSG collections into Thunderbird with full data integrity and zero loss.

Frequently Asked Questions

Q1. How can I open MSG files in Thunderbird without Outlook?

Ans. To access MSG files with Thunderbird, you need an automated MSG File Converter that can directly save MSG files into your Thunderbird account, without Outlook installation.

Q2. Can I migrate MSG files to Thunderbird with attachments?

Ans. If you’re using a trustworthy MSG Import Tool, you can import MSG files as well as their attachments into Thunderbird. However, if you rely on manual conversion, you risk losing any attachments that were associated with those messages.

Q3. Is there any built-in way to import MSG to Thunderbird?

Ans. Mozilla Thunderbird does not currently have a built-in option for opening MSG files natively. Therefore, you must use a third-party, reliable import tool to open MSG in Thunderbird.

Q4. Is it possible to import thousands of MSG files to Thunderbird?

Ans. The MSG Conversion Tool enables users to migrate multiple MSG files at once (in bulk). Typically, it is built for large-scale migrations.

Q5. Will my metadata and folder structure remain consistent after the import?

Ans. If you use MSG Converter, all of the email’s relevant data (metadata), including when the email was sent or received and all of the header information, remains intact.

About The Author:

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