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How to Convert EML to MHT – Comprehensive Guide

  author
Written By Ashwani Tiwari
Anuraag Singh
Approved By Anuraag Singh
Published On February 21st, 2025
Reading Time 6 Minutes Reading

Emails are an important means of communication, and storage format affects usability. EML is a common file format to save emails, but there will be occasions when you have to convert the EML to MHT (MHTML) format. MHT files save the content, style, and inlined items of the email in one file, which is helpful for sending and storing emails.

Whether you have to preserve significant correspondence or merely desire a convenient means of access to emails in browsers, MHT is an apt format. In the following guide, we will describe the varied methods to convert EML to MHT successfully.

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What are EML and MHT Formats?

EML is an official file format for saving email messages. It includes the body of the email, subject, sender/receiver information, and attachments. Most email clients, including Microsoft Outlook, Windows Mail, and Mozilla Thunderbird, have support for EML files. Because of its simplicity, EML files are widely used for email migration and backup purposes. They are not always easy to share universally, which is why it can be beneficial to convert them into a more flexible format such as MHT.

MHT (MHTML) is MIME HTML, a web archive format. It stores emails, whether text, images, or other media, in one file. MHT is useful for opening emails in web browsers and storing them without losing format. MHT files are especially useful when emails must be shared or stored for extended use, as they retain all embedded items in one document. In contrast to typical HTML files, MHT does not depend on external resources and is therefore a self-contained format.

Why Convert EML to MHT?

There are several reasons why converting EML to MHT can be useful:

  • Preservation of Formatting: MHT files maintain the exact layout, fonts, and styles of an email, ensuring that no information is lost.
  • Single File Storage: As opposed to EML, which attaches itself separately, MHT keeps everything in a single file, hence easier to organize.
  • Web Browser Support: MHT files are supported in browsers such as Chrome and Edge without the use of email clients, making it easy to access.
  • Archiving and Sharing: Since MHT files encapsulate the whole email in a single document, they are easier to store in the long run and share. This makes them ideal for legal documents, record-keeping, and business letters.

How to Convert EML to MHT

There are multiple ways to convert EML files into MHT format. Let’s explore the most effective methods.

Method 1: Using Microsoft Outlook

Microsoft Outlook offers 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.

  1. Open Microsoft Outlook and go to the email stored as an EML file.
  2. Select File > Save As.
  3. Select MHT or MHTML as file format.
  4. Click Save to finalize the process.

Also Read: Convert EML to MSG

Method 2: Using Internet Explorer

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

  1. Double-click the EML file to open it in Windows Mail or any default email viewer.
  2. Click File > Print and select Microsoft Print to PDF.
  3. Save the email as an HTML file.
  4. Open the HTML file saved from Internet Explorer.
  5. Go to File > Save As and select MHT.
  6. Save the file in your preferred location.

Method 3: Using Mozilla Thunderbird with an Add-on

If you are utilizing Mozilla Thunderbird as your email client, you import EML to MHT via an extension. Here is what to do:

  1. Open Thunderbird and have your EML file imported or available.
  2. Install the ImportExportTools NG add-on from the Thunderbird add-ons library.
  3. Right-click on the email you wish to convert, select Save Selected Messages, and choose HTML format.
  4. Open the saved HTML file in a browser (like Internet Explorer or Edge).
  5. Save the file again as an MHT document.

Also Read: How to Import EML Files to Outlook

Method 4: Converting EML to MHT via Microsoft Word

Microsoft Word can also be used to convert EML files to MHT format. Here’s how:

  1. Open your EML file in Notepad or a text editor.
  2. Copy the entire content of the EML file.
  3. Open Microsoft Word and paste the copied content.
  4. Click File > Save As, and choose Web Archive (.mht, .mhtml) as the format.
  5. Click Save to store the email as an MHT file.

Limitations of Manual Methods

Although manual conversion techniques are free and easy, they have a number of disadvantages:

  • Time-Consuming: Translating emails individually is not efficient, particularly if you are dealing with numerous files.
  • Formatting Problems: Manual conversion can result in the omission of formatting or nested elements, which affect readability.
  • No Batch Conversion: In case you have numerous EML files, manual ways are not convenient and may be a time-consuming task.
  • Limited Compatibility: Some email clients may not support direct MHT saving options, requiring additional steps or third-party tools.

Smart Solution: Using an EML to MHT Converter

To get over the drawbacks of manual processes, SysTools EML Converter is the ideal option. The software provides bulk conversion of EML files to MHT with formatting and attachments intact. It provides accuracy, saves time, and is simple to use even for novice users. With its easy-to-use interface and trustworthy processing, The EML to MHT Converter is the ideal option for anyone seeking efficiency and accuracy.

Benefits of The EML to MHT Converter:

  • Batch Conversion: Convert a batch of EML files to MHT at once, saving time and effort.
  • Preserves Formatting: Ensures that all email elements, including fonts, images, and attachments, are not changed.
  • Easy to use: Simple interface, which enables both novice and seasoned users to utilize it.
  • High Speed: Instantaneously converts EML to MHT without any loss of data.

How to Convert MSG Files to HTML? Step-by-Step Guide

Step 1. Run the software and choose your language.

select your language

Step 2. Select the folder that contains your EML files and Preview them.

select the EML files

Step 3. If Required, use Export Selected Option to export/convert only the selected Items.

Click on Export Selected

Step 4. Click on Export to proceed further.

Click on Export

Step 5. Select MHT format from the listed options.

Select MHT
Step 6. Apply advanced settings such as Naming Convention and Date Range Filter.

Filter Advanced Settings

Step 7. Click on Export button to Convert EML to MHT and click Ok.

Press Ok to Finish the Process

Conclusion

EML to MHT conversion is useful for email formatting, archiving, and easy sharing. Though manual techniques may work, they are limited in use. To have a speedy and effective solution, it is advisable to use the above-given EML To MHT Converter. It makes the task easier and produces the best outcome. If you are an individual seeking to archive vital emails or a company that requires bulk conversion, having the proper tool proves to be everything.

  author

By Ashwani Tiwari

Being a Chief Technical Analyst, I am aware of the technicalities faced by the user while working with multiple technologies. So, through my blogs and articles, I love to help all the users who face various challenges while dealing with technology.