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Written By Rohit Singh
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Updated on March 13th, 2026
Thunderbird’s native format, MBOX, provides a giant storage space that is efficient in itself. The problem occurs if the file gets corrupted, and users have to manage individual threads. For this reason, it is best to export Thunderbird messages to EML format to transform them into independent files. Today’s article provides a detailed tutorial on how to export Thunderbird to EML format using a reliable utility, Cigati Thunderbird Backup Tool. Furthermore, we’ll look at a free manual solution for those who want to export only a few email messages. Let’s begin.
IT professionals consider exporting Thunderbird emails to standalone EML files for easy searchability and accessibility. Users can easily export their Thunderbird messages to EML by drag and drop, installing “ImportExportTools NG, and using a professional tool.
France-based user Pierre Dubois asks: “Hi, I’m based in France. I use Mozilla Thunderbird to manage my emails, but I need to export my messages to EML format so I can access them in other email clients. Can anyone suggest a reliable and easy solution to convert Thunderbird emails to EML files in bulk?”
Users export their Thunderbird email messages to EML to access their emails across email services. Below are the reasons to consider this export process:
Once the user reviews the reasons users consider exporting their Thunderbird emails to an EML format, let’s proceed. Now, we will execute the solutions that successfully export the emails to the EML file format.
This approach is the easiest of all to convert Thunderbird to EML format. The Thunderbird email client automatically saves the email messages in EML when they are dragged to a local folder.
Use the following instructions to begin the process;
Limitations: The approach cannot be used to convert large Thunderbird mailboxes to EML format. It also does not preserve the original folder structure. Also, there is a high possibility of human errors while manually performing the steps.
Users can simply export emails from Thunderbird to EML by downloading the ImportExportTools NG in Thunderbird. This add-on enables users to export single or multiple emails to EML at once.
Look at the steps to start the export process:
Limitations: There can be issues with compatibility if the add-on does not match the Thunderbird version. Exporting large Thunderbird emails will take a considerable amount of time.
With the Cigati Thunderbird Backup Tool, users can easily save their email data as EML without worrying about missing files. The tool also allows users to perform high-level customization of the conversion process. It enables users to export their mailboxes to preferred extensions without modifying the directory hierarchy. Advanced features such as date filtering and splitting large PST files for keeping their archive neat and manageable. This ensures that even the massive mailboxes are processed efficiently and safely.
Simplified steps to export Thunderbird emails to EML:
The key strategy to maintain data integrity when exporting Thunderbird emails to EML is choosing the right approach. In this blog, we have explained two manual approaches and one professional approach to export Thunderbird to EML format. The manual approach uses the drag and drop method and an ImportExportTools NG dd-on. In contrast, a professional software, the Cigati Thunderbird Backup Tool, stands out as the most reliable and error-free solution. Users can choose the method that is best suited to their technical knowledge and data volume.
You May Also Read: How to Convert Thunderbird to PST?
Ans: No. There is no such built-in option “Export to EML” by default. The user can save single or multiple messages as .eml files using the Save as option or by using the drag-and-drop approach.
Ans: Yes. The EML file format is widely accepted by various email applications. Common email clients that support the EML format are MS Outlook, Windows Mail, and Apple Mail.
About The Author:
Rohit Singh is an Email Backup, Recovery & Migration Consultant and is associated with Software Company from the last 3 years. He writes technical updates and their features related to MS Outlook, Exchange Server, Office 365, and many other Email Clients & Servers.
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