How to Convert PST to MHT Online without Outlook?

Sarabjeet Kaur | outlook pst software technology | 5 minutes read | Last updated on July 11th, 2025,
how to convert pst to mht online

In this detailed guide, we’ll explore how to convert PST to MHT online without Outlook mail client. We’ll cover the most up-to-date and reliable methods that guarantee success. All your questions related to PST to MHT conversion will be answered, so stick with us till the end to find the best solution for your requirements.

A Quick Overview of PST and MHT File Types

PST (Personal Storage Table) files are used by Microsoft Outlook to save a user’s emails, contacts, calendars, tasks, and other mailbox data locally. These files are essential for backing up Outlook data, transferring emails between systems, or accessing messages offline.

MHT (or MHTML – MIME HTML) files, on the other hand, are used to save entire web pages in a single, consolidated format. This includes the HTML content along with embedded elements like images, stylesheets, and scripts. MHT files are ideal for archiving web content or sharing webpages in an offline, readable format.

Reason to Convert PST File to MHT File

  • MHT files store complete emails in a single file, making them easy to open and read offline without Outlook.
  • MHT format preserves the email as a web page, allowing easy sharing or publishing in browsers.
  • MHT files provide a neat, compact way to archive important emails with all formatting and attachments intact.
  • Saving emails as MHT helps in maintaining evidence with an unaltered, viewable format for audits or legal purposes.
  • MHT files can be shared easily via email or other platforms without worrying about compatibility issues.
  • Unlike plain text, MHT keeps the original layout, images, and embedded content of the email intact.

How to Convert PST to MHT Online without Outlook?

There are two main ways to convert PST to MHT – a manual method and an alternative automated solution. Let’s first take a look at the manual process. After that, we’ll explore a more efficient alternative method.

Method 1: Manual Way to Convert PST to MHT

  1. Open Microsoft Outlook on your computer.
  2. Import the PST file (if it’s not already loaded): Go to File > Open & Export > Open Outlook Data File, then browse and open your PST file.
  3. Select the email you want to convert.
  4. Go to File > Save As.
  5. In the Save as type dropdown, choose MHT Files (*.mht).
  6. Choose a destination folder and click Save.

Method 2: Alternative Automated Way to Convert PST to MHT

Download and install the BitData Migration PST Converter on your computer.

  1. Launch the tool and choose between “Select Files” or “Select Folder” to upload your PST data.
  2. Once the files are loaded, select the specific folders or emails you want to convert by checking the appropriate boxes.
  3. From the list of output formats, choose “MHT” as your desired saving option.
  4. Set the destination path where you want the converted files to be saved, and optionally select a file naming convention that suits your preference.
  5. Finally, click on the “Convert” button to begin the process. The tool will export the selected PST data into MHT format quickly and accurately.

How Manual and Alternative Methods Differ in Outlook to MHT Conversion?

AspectManual MethodAlternative Method
Process ComplexityRequires multiple manual steps, including opening Outlook, selecting individual emails, and saving each as MHT. The process can be tedious and error-prone.One-click or few-click process with an intuitive interface, automating the entire workflow to reduce user effort and mistakes.
Conversion SpeedVery slow, especially when handling large PST files or multiple emails due to one-by-one export limitation.High-speed batch processing that can convert thousands of emails in minutes, regardless of PST size.
Accuracy & IntegrityRisk of missing emails or attachments if the user skips steps or encounters Outlook errors. Formatting may sometimes be lost during manual saving.Maintains 100% data integrity including emails, attachments, metadata, and formatting as it uses advanced algorithms designed for conversion.
User Skill RequirementRequires familiarity with Microsoft Outlook and manual file handling; less technical users may find it difficult.User-friendly design requires minimal technical knowledge; suitable for all user levels.
Software RequirementsMust have Microsoft Outlook installed and properly configured; conversion depends on Outlook’s stability and performance.Often standalone tools that do not require Outlook, reducing dependency and potential compatibility issues.
Attachment & Embedded Content HandlingAttachments might not always save correctly or could be separated from the email body. Embedded images and scripts may be lost or broken.Fully preserves all attachments, embedded images, links, and other resources within the MHT output file.
Cost & AccessibilityFree, as it uses existing Outlook software, but costs in time and effort can be high.Usually paid software, but offers time-saving, reliability, and professional support, providing better ROI for business users.

Difference between Demo and Licensed Edition of Bitdata Migration PST to MHT Converter

The Demo Edition of Outlook Converter allows users to convert up to 25 items per selected folder, providing a limited but clear demonstration of the software’s capabilities. This lets users evaluate the conversion quality and interface before purchasing. In contrast, the Licensed Edition removes this restriction, enabling unlimited conversion of all emails, attachments, contacts, tasks, calendars, and metadata with full accuracy. It also unlocks advanced features, faster processing speeds, and priority customer support, making it suitable for professional or bulk PST to MHT migration.

The Final Thoughts

In this article, we covered everything you need to know about converting PST files to MHT without Microsoft Outlook. We explored both the manual method using Microsoft Outlook and the more efficient alternative using professional PST to MHT Converter Tool. You also learned the key differences between these methods to help you choose the best option based on your needs. Whether you’re handling a few emails or managing bulk data migration, this write-up provides the perfect solution to simplify your PST to MHTML conversion task.

Frequently Asked Questions

1. What is the difference between PST and MHT files?

PST files store email data within Microsoft Outlook, including emails, contacts, and calendars. MHT files save web pages or emails as a single file, preserving the HTML content and embedded resources.

2. Can I convert PST files to MHT manually?

Yes, you can manually save individual emails from Outlook as MHT files, but this method is time-consuming and suitable only for small numbers of emails.

3. Is there an easier way to convert PST to MHT in bulk?

Yes, automated PST File to MHT Converter Tool allows batch conversion of multiple emails or entire folders quickly and accurately.

4. Will attachments be preserved when converting Outlook file to MHT?

When using a professional solution, all attachments and embedded content are preserved intact. Manual methods may not always retain attachments properly.

5. Do I need Microsoft Outlook installed to convert PST to MHT?

Manual conversion requires Outlook, but many third-party tools work independently without needing Outlook installed.