EML ( Email Message File ) is also a widely used file format for storing individual email messages. It contains the entire email message, including the sender and recipient information, message body, attachments, and headsers. Thunderbird, a popular open-source email client, uses the MBOX file format to store its emails. While Thunderbird doesn't natively support EML files, there are effective methods to import them into the application.

EML File vs. Thunderbird MBOX File: A Detailed Comparison

Feature EML File MBOX File
File Format Standard format for storing individual email messages Proprietary file format used by Thunderbird to store email collections
Structure Self-contained file containing a single email message Hierarchical file structure that can store multiple email messages
Purpose Used for archiving or sharing individual email messages Designed for managing large collections of email messages

Why Import EML Files into Thunderbird?

There are several reasons why you might want to import EML files into Thunderbird:

  • Preserve Email History: Importing EML files allows you to integrate your existing email archives into Thunderbird, providing a unified view of your email history.

  • Migrate from Other Email Clients: If you're switching from an email client that uses EML files, importing them into Thunderbird enables a smooth transition.

  • Backup and Restore: EML files can serve as a backup for your Thunderbird emails, allowing you to restore them in case of data loss.

Methods to Import EML in Mozilla Thunderbird Mail:

First. Manual Method:

The manual method involves dragging and dropping EML files into Thunderbird.


  1. Open Thunderbird and navigate to the desired folder where you want to import the EML files.

  2. Locate the EML files you want to import.

  3. Drag and drop the EML files from your computer to the desired folder within Thunderbird.

Second. Automated Tool: Shoviv IMAP Backup and Restore Tool

Shoviv IMAP Backup and Restore is a third-party tool that simplifies the EML import process.


  1. Install and launch Shoviv IMAP Backup and Restore.

  2. Select "Import EML Files" from the main menu.

  3. Browse and select the EML files you want to import.

  4. Choose the destination folder in Thunderbird where you want to import the EML files.

  5. Click "Start Import" to begin the import process.

Also Read: 100% Working Method to Export Thunderbird Emails to Outlook


Importing EML files into Thunderbird is a straightforward process that allows you to integrate your existing email archives or migrate from other email clients. The manual method provides a basic approach, while Shoviv IMAP Backup and Restore offers an automated and user-friendly alternative. By following these methods, you can seamlessly import your EML files into Thunderbird and enjoy a unified email experience.

Related blogs:

  1. Import EML to Outlook
  2. Import MBOX to Outlook
  3. Import PST into Gmail
  4. Import PST to Thunderbird
  5. Import EML to Gmail