Email data management often requires converting messages into different formats for sharing, backup, or migration. If you are using Mozilla Thunderbird and want to export your emails into EML format, the process is quite straightforward. Thunderbird natively supports EML files, making the export process simple and efficient.

In this guide, we will walk you through different methods to export Thunderbird emails to EML format, along with tips, challenges, and best practices.

What is an EML File?

It is a standard email file format which is used store individual email messages. It contains sender and recipient details, subject line, email body, attachments, and metadata. EML files are supported by various email clients, including Microsoft Outlook and Thunderbird.

Why Export Thunderbird Emails to EML?

There are several reasons why users export emails to EML format.

1. Easy Sharing

EML files can be easily shared and opened across platforms.

2. Backup and Archiving

You can store individual emails securely.

3. Compatibility

EML is supported by multiple email clients.

4. Migration

Useful for transferring emails to another platform.

5. Data Organization

Helps in organizing emails as separate files.

Method 1: Drag and Drop Emails to Folder

This is the simplest and quickest method.

Steps to Follow

  1. Open Mozilla Thunderbird.
  2. Navigate to the mailbox folder containing emails.
  3. Select one or multiple emails.
  4. Drag them and drop into a folder on your desktop.
  5. Thunderbird will automatically save the emails as EML files.

Limitations

  • Not ideal for very large mailboxes
  • Does not preserve folder hierarchy

Method 2: Use ImportExportTools NG Add-on

This is the most recommended method to export Thunderbird emails to EML for bulk export.

Step 1: Install the Add-on

Open Mozilla Thunderbird.

Go to Add-ons and Themes.

Search for ImportExportTools NG.

Install and restart Thunderbird.

Step 2: Export Emails

Right-click on the mailbox folder.

Select ImportExportTools NG.

Click Export all messages in the folder.

Choose EML format.

Select destination location.

The tool will export all emails into EML files.

Limitations

  • Requires add-on installation

Method 3: Save Individual Emails

This method is useful for exporting specific emails.

Steps

  1. Open an email in Mozilla Thunderbird.
  2. Click File to Save As.
  3. Choose the location.
  4. Save the email as an EML file.

Limitations

  • Time-consuming for multiple emails

Method 4: Use Copy-Paste Method

This is a less common method to export Thunderbird emails to EML but can be used for small tasks.

Steps

  1. Open the email in Thunderbird.
  2. Copy content.
  3. Paste into a text editor.
  4. Save with .eml extension.

Limitations

  • May lose formatting
  • Not recommended for professional use

Method 5: Use Professional Tools

For large-scale or advanced export needs, professional tools like CubexSoft Thunderbird to EML Converter Tool is ideal. It is designed to simplify email migration and ensure seamless data transfer across different platforms. The software supports bulk conversion, allowing users to convert entire Thunderbird profiles or multiple mailbox files at once without any file size limitations. It also maintains complete data integrity, preserving email formatting, attachments, metadata, and folder hierarchy throughout the conversion process. One of its key features is auto-detection of Thunderbird profiles, which helps users easily locate mailbox data without manual effort. It also supports orphan files, meaning conversion can be performed even if Thunderbird is not installed on the system. It also shares a user friendly and intuitive interface which helps all the users to migrate easily without requiring any advance technological experience. The utility also let users explore the tool first using the free trial which let the users export up to 20 Thunderbird emails from the mailbox for free.

Key Features

  • Bulk export of emails
  • Maintains attachments and metadata
  • Accessible across all the Windows and Mac devices.
  • Preserves folder hierarchy
  • High-speed processing
  • User-friendly interface

Steps to Export Thunderbird Emails to EML Using the Automated Tool

  1. Install and Launch the Thunderbird conversion tool.
  2. Add Thunderbird profile or MBOX files.
  3. Preview the selected files.
  4. Select EML as output format.
  5. Choose destination location.
  6. Start the export process.

Tips for Successful Export

  • Always create a backup of the file before exporting.
  • Structure your mailbox properly.
  • Choose Correct Method
  • Verify Output
  • Check exported EML files for accuracy.

Common Challenges

  • Exporting may take time.
  • Repeated exports can create duplicates.
  • Improper methods may not preserve attachments.

Conclusion

Exporting emails from Mozilla Thunderbird to EML format is a simple yet powerful way to manage, share, and archive your email data. Whether you choose the drag-and-drop method, built-in save option, or add-ons like ImportExportTools NG, each method offers flexibility based on your needs.

For small tasks, manual methods work, however risky for bulk export, add-ons or professional tools like CubexSoft Thunderbird Converter Tool provide better efficiency. By following this guide, you can easily export Thunderbird emails to EML format while maintaining data integrity and organization.