To convert EML to MHT, first import the EML files into a Thunderbird folder using the ImportExportTools NG add-on. Then export the messages as HTML. Open each HTML file in a desktop version of Microsoft Word that supports saving as Single File Web Page (.mht or .mhtml) and save it in that format.

This workflow requires additional software and repeated steps. It may not preserve formatting or remote images. Attachments exported as separate files are not guaranteed to be embedded in the exported MHT file.

Alternatively, you can consider a dedicated EML to MHT converter. A dedicated converter makes the task much easier. It can process multiple EML files in bulk and preserve supported email formatting and attachments.

What You’ll Learn Hide
  1. What are EML and MHT Formats?
  2. Why Need to Export an EML File to MHT?
  3. Efficient Methods to Transform EML File to MHT
  4. Method 1: Using Microsoft Outlook
  5. Method 2: Try Internet Explorer
  6. Method 3: Using Mozilla Thunderbird with an Add-on
  7. Method 4: Use Microsoft Word for Conversion of .eml to .mht Files
  8. Convert EML to MHT on Mac
  9. Smart Solution: Using an EML to MHT Converter
  10. How to Convert EML to MHT? Step-by-Step Guide
  11. Conclusion
  12. FAQs

Emails have become a vital means of communication, whether it’s in a professional field or in our personal lives. However, emails have their own file format, which is EML. But sometimes, users want to share emails officially worldwide using a browser. So, they need to convert EML to MHT file format.

In this article, we’ll discuss how to transform an EML file to MHT format without losing important data using both manual and automated solutions effectively. But first, we need to understand these formats.

What are EML and MHT Formats?

Before diving into solutions, it’s necessary to know about these formats and their functions. Let’s walk through it.

  • EML, or Email Message file, is popularly used by many email clients like MS Outlook, Thunderbird, and many more to save email conversations. It includes all data of the email, such as the subject, date and body of the email. It’s widely used for migration & backup purposes too.
  • Whereas an MHT or MHTML web format saves emails, formatting, images, and other embedded items. Also, MHTML stores webpages in a single file, which can be viewed through any browser, such as Microsoft Edge, Mozilla Firefox or Chrome.

Therefore, when you need to view an EML file in a browser, then transform EML file to MHT makes it easier to view without relying on any email client.

Also Read: Convert EML Files to MSG Format in Simple Steps with Complete Data

Why is There a Need to Convert EML to MHT?

There are several reasons given below for the conversion of .eml to .mht:

  • These.MHT files are ideal for storing content for the long term, as they save their content in a single file with a structured format.
  • MHT format files are widely used in many organizations, whether it’s for communication or documentation, due to their reliability.
  • After exporting EML to an MHT file, you can see your emails directly in the browser without using any email client.
  • It’s easy to share a single MHT file instead of sharing many EML files along with embedded images, attachments, etc.
  • MHTML files maintain the original data structure, including fonts, layout, and other email formatting.

Effective Solutions to Transform EML File to MHT

There are multiple ways to convert EML to MHT format.

  • Using MS Outlook
  • Try Internet Explorer
  • Using Mozilla Thunderbird
  • Use MS Word
  • An Automated Tool

Let’s explore the most effective methods.

Method 1: Using Microsoft Outlook

MS Outlook provides an easy option for saving emails in MHT format. If you are already using Outlook as your default email client, this option could be time-saving and convenient.
Steps:

  1. Open Microsoft Outlook.
  2. Select the email folder, which is stored in an EML file.
  3. After selecting it, right-click it and go to File > Save As.
  4. Choose the MHT or MHTML file format.
  5. Browse to your saving location, then click Save to convert EML to MHT file.

Pros:

  • It’s a safe and trusted method compared to others.
  • Effectively works with a few folders of EML files.
  • Also, preserves the original email data structure

Cons:

  • Very time-consuming process, as there is no batch conversion.
  • MS Outlook needs to be installed to do this conversion.

Read: How to Import EML Files to Outlook

Method 2: Using Internet Explorer

If you don’t have Outlook, you can use Internet Explorer to convert EML to MHT format. Though this method is somewhat outdated, it is still useful for users with older versions or systems.
Steps:

  1. You can right-click the EML file to open it.
  2. Choose Open With > Internet Explorer.
  3. Once it opens, navigate to File > Save As.
  4. Select the MHT single file format in Save As Type.
  5. Save the file in your desired location.

Pros:

  • No need to install any email client like Outlook.
  • Maintains all formatting and other embedded content structure.

Cons:

  • It’s Outdated, so it might not work in the new version of the system.
  • Not useful for batch conversion of .eml to .mht files.

Method 3: Using Mozilla Thunderbird with an Add-on

If you’re using Mozilla Thunderbird as your email client, then you can transform an EML file to an MHT file through an extension. Here is how you can do:
Steps:

  1. Open Thunderbird on your system.
  2. Import your EML files into a folder by drag & drop process.
  3. Choose the emails that you want to convert.
  4. Then, click on your selected emails & click Save As > File.
  5. Install the ImportExportTools NG add-on from the Thunderbird add-ons library.
  6. If your system has installed the ImportExportTools NG Add-on, then select MHT format.
  7. Browse to your destination to save the file again as an MHT file.

Pros:

  • Free, quick & open-source tool
  • It can perform batch conversion of email files at once.

Cons:

  • You need to install Thunderbird & add-ons on your pc.
  • Message formatting accuracy might differ among different emails.

Read Also: How to Convert EML to TXT

Method 4: Converting EML to MHT via Microsoft Word

Microsoft Word can also be used to convert EML files to MHT format.
Steps:

  1. Launch Microsoft Word on your PC.
  2. Navigate to File > Open & Search for an. EML file or folder.
  3. Wait for the load of the file.
  4. After loading, click on File > Save As, and choose MHTML format.
  5. Press Save to store the email as an MHT file.

Pros:

  • Doesn’t need any email client like Thunderbird.
  • If working on single emails, then it’s the best & easiest method.

Cons:

  • Your formatting or embedded attachments might get hampered.
  • Also, your attachments, like images, will be excluded.
  • This method is not suitable for bulk exporting.

As you can see, the above manual methods have many drawbacks. So, to avoid these challenges, users have to upgrade by choosing automated software. Let’s walk through it.

Method to Convert EML to MHT on Mac

Mac users can use Mozilla Thunderbird and Microsoft Word to convert EML emails into MHT files.

Steps:

  1. Install Thunderbird and the ImportExportTools NG add-on on your Mac.
  2. Import EML files into a local Thunderbird folder.
  3. Right-click the folder. Then export the emails as individual HTML files using the add-on.
  4. Open an exported HTML file in Microsoft Word for Mac.
  5. Select File then Save As and choose Single File Web Page (.mht).
  6. Save the converted file to your Mac.

Repeat the process for other emails. This method requires multiple applications and manual exports.

Smart Solution: Using an EML to MHT Converter

To overcome the drawbacks of manual processes, we recommend using the SysTools EML Converter Tool as the ideal option. This software offers bulk conversion of EML files to MHT with formatting and attachments intact. Also, provides accuracy & reliability, which saves time and effort. With its simple UI, a normal user can easily operate the EML to MHT Converter without having technical knowledge.

Know more benefits of this proactive utility:

  • Along with MHT, it can convert EML to HTML, PST, MSG, MBOX, etc & many more.
  • Preserves your email data structure & integrity along with attachments.
  • Easy to operate, reliable, trusted, accurate & quick processing.
  • Easily batch-converts .eml to .mht files without data loss.
  • Provides an option to preview your selected emails in a folder.

Step-by-Step Guide to Transform EML File to MHT

1. Install and Launch: Install and open the tool on your computer.

dashboard of eml to mht converter

2. Add EML Files: Select File Mode to add individual EML files. Choose Folder Mode to add an entire folder. Click Next.

adding eml files to export as mht

3. Apply Date Filter: Set a start date and end date to export emails from a specific period. You can skip this option to export all emails.

applying date filter to convert eml files to mht format

4. Choose MHT Format: Select MHT from the export options. Then click Next.

choosing MHT format to export eml files into mht

5. Export EML Files: Choose a destination folder and click Start Export. Once the process finishes, click View Result to access the MHT files.

choosing destination folder to save converted eml files

Note: You can use the same steps if you want to convert EML files to MHT on Mac using Mac version software.

Conclusion

In this article, we’ve explained how to convert EML to MHT files effectively using many methods, whether it’s MS Outlook, Internet Explorer, Word or Thunderbird. However, using manual methods has some limitations, so users have to face challenges. So, for easy, quick, & reliable conversion of .eml to .mht file, we recommend using the advanced software mentioned above. As it’s a very trusted & automatic software, it makes our transformation process efficient by saving our time & effort.

Also Read: How to Extract Attachments from EML Files? Simple Methods

Frequently Asked Questions

1. How can I convert EML to MHT without Outlook?
You can use Thunderbird to export EML files as HTML. Then save them as MHT using Microsoft Word.

2. Can I convert multiple EML files to MHT at once?
Yes. A dedicated EML to MHT converter supports bulk email conversion. It also saves multiple messages in the selected MHT format.

3. Are attachments included in MHT files?
The converter saves images and attachments separately from the MHT output. Check the destination folder after conversion.