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How to Export Thunderbird Emails to HTML With Attachments?

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Published By Jamie Kaler 
Rollins Duke
Approved By Rollins Duke
Published On May 23rd, 2026
Reading Time 7 Min Read
Overview: You can export Thunderbird emails to HTML either selectively using Thunderbird’s native “Save As” option. To save bulk Mozilla Thunderbird messages in HTML format, you can either use ImportExport Tools NG as a free alternative. For more precise, professional-grade, and easy Thunderbird to HTML conversion with signature, use the RecoveryTools Thunderbird to HTML Converter.
Table of Contents Hide
  1. Pro Tool to Convert Thunderbird Emails to HTML
  2. Free-Manual Steps to Convert Thunderbird Emails to HTML
  3. Best Way to Export Thunderbird Emails to HTML

Many marketers, IT admins, and developers need to save Thunderbird emails to HTML locally for multiple archiving, sharing, and offline viewing needs, all while maintaining formatting. Here are the step-by-step instructions to export Thunderbird to HTML using multiple methods.

Note: The steps remain almost identical across all Thunderbird versions on Mac & Windows.

Best Solution to Save Thunderbird Emails as HTML

A user can easily convert Thunderbird to an HTML file with the help of RecoveryTools Thunderbird Migrator. This utility will provide users with a direct option to create a separate HTML file for each Thunderbird email. RecoveryTools Thunderbird to HTML Converter precisely handle inline images, formatting style, hyperlinks, embedded metadata, with character encoding to avoid any risk of data loss. It will also extract all the attachment files from Thunderbird emails to a separate folder. Users can also use this software to get separate email attachments.

Free Download the Setup of Thunderbird Export to HTML Tool

Trial Limitation: A user can only convert the first 25 emails from Thunderbird to HTML files. If you want to export more than 25 emails, then you need to first activate the software. You can do it easily by completing the purchase process. Once the user successfully finished the payment, he will receive the activation key via e-mail within 15 minutes.

Steps to Export Thunderbird Email to HTML Using a Tool

Thunderbird to HTML Converter is one of the top solutions at the present time. Many industry experts reviewed & recommended this software for Thunderbird Export Email to HTML file. The reason is very simple, it’s a robust design to simplify the whole conversion process. A user can understand it just by following these steps:

  1. Install & launch Thunderbird to HTML Converter software.

    Download Thunderbird to HTML Converter

  2. Now, load the Thunderbird mailbox items in the toolkit panel. This toolkit has an advanced option to automatically load Thunderbird data from configured Profile path. However, users can also choose Select Files or Select Folders options to load data manually.

    load the Thunderbird mailbox

  3. The software will instantly start analyzing & listing all the Thunderbird mailbox folders in its panel. Users have now the choice to select only desired Thunderbird Folders for the conversion.

    all the Thunderbird mailbox folders

  4. Choose the HTML option from the list of 30+ Saving options.

    Choose the HTML

  5. Set up Thunderbird to HTML file conversion options including change destination path, save the message to source folder path, file naming options, etc.

    Setup Thunderbird to HTML file conversion

  6. After that, click on the Convert button to start the actual conversion process.

    click on the Convert

Best Used When: Large-scale, enterprise-level data needing complete integrity for ease and compliance.

Free-Manual Steps to Convert Thunderbird Emails to HTML

As HTML holds the structure and content of a web page that can be directly opened by a web browser, Thunderbird has an in-built way to export emails as HTML.

Method 1: Thunderbird Save Email as HTML (Small Data)

It lets you convert individual Thunderbird emails to HTML. However, it does not work with multiple emails in one go.

  1. Open Thunderbird on your Mac or Windows.
  2. Right-click on the email under the Thunderbird mailbox folder.
  3. Choose the Save As option.
  4. Name the file.
  5. From the File Type drop-down menu, choose HTML.
  6. Click on the Save button.

Best Used When: Need to convert up to 50 Thunderbird emails to HTML.

Method 2: Bulk Convert Thunderbird Emails to HTML Using an Add-On

You can export Thunderbird Emails to HTML in bulk (although limited to 4GB) with ImportExport Tools NG. Using the ImportExport Tools NG, you can export multiple Thunderbird folders to HTML under a single account at once.

Disclaimer: You cannot manually export the entire Thunderbird profile into HTML at once.

  1. In Thunderbird, click on Menu (three lines) at the top-right.
  2. Open the Themes & Add-Ons tab, look for ImportExport Tools NG and Add.
  3. Select the Thunderbird folder you want to save as HTML.
  4. Right-Click and choose ImportExport Tools NG >> Export All Messages.
  5. Choose HTML as the saving option. (Messages, Index, Attachments with Subfolder)
    save Thunderbird emails as HTML
  6. Choose the Saving destination.

Best Used When: For folder-level Thunderbird to HTML source conversion.

What is the Best Way to Export Thunderbird Emails to HTML?

Here is a quick table of comparison listing the limitations and advantages of the manual as well as the RecoveryTools Thunderbird to HTML converter.

Feature Manual Method Thunderbird to HTML Converter
Complete Profile Conversion No complete profile conversion support Designed for Bulk Conversion
Advanced Filters No filter options available Date, subject, sender, etc.
File Naming Option Unorganized data, difficult to find emails Find options and organized HTML output available
Metadata/ Attachments & Hierarchy Often loses Preserves all email attributes
Risk of Corruption High risk during manual processing No risk of data corruption
Cost Free method Free demo version available

Some Amazing Features of Thunderbird Export to HTML Tool:

This toolkit is designed to ease the users in converting Thunderbird emails to HTML files easily. A user can quickly export Thunderbird emails to an HTML file with all the details, including Hyperlinks, Meta Properties, Email Headers, or formatting. It provides users with a list of amazing features. Some of them are:

  • One can easily convert single or multiple Thunderbird users’ emails to HTML files. This tool supports the batch export of Thunderbird emails to HTML files.
  • A user does not need to manually load HTML files in the program. This tool can automatically detect the Thunderbird mailbox data from the configured Profile location.
  • It will preserve all the original components & meta properties of Thunderbird emails while exporting them to an HTML file.
  • A user will obtain all the inserted attachment files in a separate folder while trying to export Thunderbird emails to an HTML file.
  • You do not face any file size limitation during the Thunderbird to HTML file conversion process. It supports the conversion of unlimited files without any limitation.
  • This tool is best for both technical & non-technical users. You do not need any advanced technical knowledge to use this software.
  • It is a completely standalone program that can be used without any third-party applications.
  • One can easily run this software on both Mac & Windows OS devices, including Windows 10, 8.1, 8, 7, XP, Vista, etc.
  • It is an easy-to-use application with a very user-friendly interface. You can use it to export Thunderbird email to HTML files effortlessly.

This is the complete guide on how to convert Thunderbird to an HTML file. If you still have any issues, you can also connect with our team of experts that provides 24*7 Live Chat Support.

FAQs: Export Thunderbird to HTML

Q1: Can I just select a bunch of emails and hit ‘Save As’ HTML?
No, Thunderbird’s built-in Save Email as HTML option only works for one email at a time. It is not suitable for bulk conversion.

Q2: Why do my exported HTML emails have pictures missing and improper formatting?
Even the Thunderbird to HTML add-on has pitfalls when it comes to handling data in bulk. In such cases, you can try exporting Thunderbird emails in smaller batches or switch to the RecoveryTools Thunderbird to HTML converter.

Q3: Will I be able to convert Thunderbird to HTML with attachments?
Yes. Using both the tools and the manual approach, the attachments are saved separately under the output folder.

Q4: Can the RecoveryTools Thunderbird to HTML Wizard handle 50,000+ emails?
Yes. With its advanced data management, the tool can convert 50+ GB of Thunderbird profile data within minutes.

Conclusion:

The above article includes a detailed description of how a user can export Thunderbird emails to HTML files. Many users failed to do so due to a lack of technical knowledge. Hence, I had explained the best solution available at the present time for Thunderbird Convert to an HTML file.

Want to access raw Thunderbird data without formatting? Learn how to convert Thunderbird to TXT format.

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