How to Convert EML to MSG in Bulk Along With Attachments and Other Details?

Sarabjeet Kaur | eml file conversion software technology | 4 minutes read | Modified on: 19-06-2025
how to convert eml to msg in bulk

If you’re searching for a way to convert EML to MSG in bulk, you’ve come to the right place. Keep reading this article for a quick and instant method to perform this conversion. A lot of users convert EML files to MSG format for various reasons, which we will explore later in this write-up. Now, let’s begin with a brief overview of EML to MSG conversion.

EML and MSG are two common email file formats used by different email clients. EML files store individual email messages and are widely supported by clients like Windows Mail and Mozilla Thunderbird. MSG files, on the other hand, are proprietary to Microsoft Outlook and store emails along with metadata such as attachments, sender information, and formatting.

Converting EML files to MSG format is often necessary when users switch from one email client to Microsoft Outlook or need to maintain full compatibility with Outlook’s features. This conversion ensures that all email data, including attachments and formatting, is preserved and accessible in Outlook.

EML and MSG Files: What Sets Them Apart?

FeatureEML FileMSG File
File FormatPlain text email file formatProprietary Outlook email file
Associated Email ClientsApple Mail, WLM, ThunderbirdMicrosoft Outlook
Content StoredEmail message with headers and bodyEmail message with headers, attachments, metadata, and body
Format TypeText-based, RFC 822 standardBinary format
File Extension.eml.msg
Supported PlatformsCross platform (Linux, Win, and Mac OS)Mainly Outlook (Outlook environment)

Why Convert EML to MSG?

Changing EML files to MSG format is essential for users who want better compatibility with MS Outlook. MSG files retain all email details like attachments and formatting, making them ideal for Outlook users. This conversion also helps in smooth email migration, improved data management, and ensures your emails display correctly across different devices. Simply put, converting to MSG keeps your emails fully functional within Outlook’s ecosystem.

How to Convert EML File to MSG File with Attachments? – Multiple Methods

There are two ways to convert EML files to MSG format with attachments, one is a manual method, and the other is an automated solution called BitData Migration EML Converter. In the next section, we’ll explain both methods step-by-step so you can choose the best option for your needs.

Method 1- Manual Solution to Convert EML to MSG File

  1. Open Microsoft Outlook on your Windows computer.
  2. Locate the EML file you want to convert on your system.
  3. Drag and drop the EML file into Outlook simply drag the file into the Outlook inbox or any folder.
  4. Once the email opens in Outlook, click on File > Save As.
  5. In the Save As dialog box, choose “Outlook Message Format (*.msg)” as the file type.
  6. Select the destination folder where you want to save the MSG file and click Save.

Repeat this process for each EML file you wish to convert.

Method 2- How to Convert EML to MSG in Bulk Using An Automated Approach?

When you have a large number of EML files to convert, doing it manually can be boring as well as time-consuming. That’s where the EML to MSG Converter comes in handy. This automated tool lets you quickly and efficiently convert multiple EML files to MSG format in one go, saving you a lot of effort and time. Unlike the manual method, it preserves all attachments and email properties perfectly and reduces the chance of errors. Using this software is the best choice for users looking for a fast, reliable, and hassle-free conversion process.

Steps to Convert EML File to MSG File with Attachments

  1. First, install the EML to MSG Conversion Tool on your Windows OS machine.
  2. Upload your EML files by selecting either the “Select Files” or “Select Folder” option.
  3. Choose specific EML files by ticking the checkboxes next to them.
  4. Review your selected email messages in the “Preview” section to verify the contents.
  5. Press the “Export” button and select “MSG” from the available output formats.
  6. Apply any necessary filters, then click “Browse” to choose the destination folder for the converted files.
  7. Finally, click the “Convert” button to start the EML to MSG conversion process.
  8. When the process completes, hit “OK” on the confirmation dialog that says “Process Completed Successfully.”

Manual vs. Professional EML to MSG Conversion: Key Differences

FeatureManual WayAutomated EML to MSG Tool
Ease of UseNeeds technical steps and skillsUser-friendly with easy steps
Time EfficiencyTime-taking, especially for bulk conversionQuick batch conversion of EML files into Outlook MSG files
Attachment HandlingAttachments may sometimes be corrupted or lostKeeps all attachments easily  
Output ExactnessDepends on user actions, possibility of error100% precise and preserves email integrity
Bulk ConversionOne file at onceSupports mass migration of multiple EML emails into MSG
MS Outlook DependencyNeeds Outlook installedNo Microsoft Outlook installation needed
Extra FeatureLimitedData preview, filtering, and selective migration options
CostFree, but labor-intensivePaid tool with free trial pack available

Conclusion

In this article, we’ve covered how to convert EML to MSG in bulk using two techniques: manual and automated (EML to MSG Outlook Converter). While the manual method works fine, it does have some disadvantages like being time-consuming and less efficient. To overcome these limitations, the expert method offers a faster and more reliable solution. Feel free to pick the approach that suits you best. We have also included simple step-by-step instructions for both ways to guide you through the procedure with ease.

Quick Note:

Besides MSG, the EML File Converter supports multiple other output formats and platforms, including PST, MHT, RTF, DOC, IMAP, Gmail, Yahoo Mail, vCard, ICS, PDF, EML, MBOX, HTML, CSV, G Suite, Thunderbird, WLM, Zimbra, AWS WorkMail, Office 365, Lotus Notes, and more.