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How to Convert EML to CSV in Batch without Losing Data?

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Published By Jamie Kaler
Rollins Duke
Approved By Rollins Duke
Published On January 3rd, 2026
Reading Time 6 Minutes Reading
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If you are looking for a solution to batch convert EML to CSV, then you are in the right place. This article takes you through the simplest and most professional methods of converting EML to CSV.

We all know the importance of emails for both individual and professional environments. Often, the EML file format stores email messages that are massively supported by multiple email clients like Thunderbird, Windows Live Mail, Outlook Express, and many more. But, when users feel the need to structure, analyse, access, or share email data, using a practical format, CSV (Comma-Separated Value) text files are essential. The practice of save EML to CSV file format is a good approach for better utilisation of EML files.

An analytical tool and database system support to manage client data and contacts through a CSV file format. That is the reason most users look for multiple approaches to convert EML to CSV with no data loss. This article sheds light on manual methods and automated approaches to exporting EML to CSV in depth. Let us have a look at exporting .eml files to .csv file format.

Why EML to CSV Conversion is Essential?

There are several reasons behind the search for ways to convert EML to CSV:

  • Email Archiving: Enterprises use CSV files for organised and structured data email backup.
  • Data Analysis: The compatibility of CSV with Excel, Google Sheets, and more makes it easier to sort, filter, and analyse large data sets.
  • Business Records: Maintaining the business records for compliance, report workflow and audits.
  • Portability of CSV: It is lightweight and easier to handle large EML files in bulk.
  • Shareability: Without compatibility issues, it can be shared across multiple platforms seamlessly.

How to Convert EML to CSV File? Manually

Exporting EML to CSV is advisable to use for usability, shareability, organising, and long-term storage. Some email clients support converting emails to CSV file format. One of them is Thunderbird, through which users can save EML to CSV. The procedure includes three phases for the successful export from .eml to .csv.

Manual Method to Change EML to CSV Using Thunderbird

Phase 1: Add an Add-on in Thunderbird

  1. Firstly, install & launch Thunderbird, and complete the configuration process.
  2. Secondly, click on the hamburger menu (menu icon).
  3. Thirdly, go to Add-ons and Themes > select Extensions.
  4. Now, search ImportExportTools NG > Add to Thunderbird > confirm installation.
  5. Lastly, restart Thunderbird.

Stage 2: Built-in Way to Create a Folder

  1. Right-click on your account name in the side folder panel.
  2. Then, select New Folder.
  3. Lastly, name it according to your preference, such as ‘Import Files’.

Phase 3: Convert EML to CSV

  1. Firstly, right-click on the newly created folder.
  2. Secondly, select ImportExportTool NG > click on Import EML message.
  3. After that, choose the Individual EML message and select the EML.
  4. Now, all EML files are visible in Thunderbird, and right-click on the desired file to convert it to CSV.
  5. Then, choose Export Message As > select CSV Format (Spreadsheet).
  6. Finally, choose the destination path for saving the converted file.

Limitations of Convert EML to CSV Using Thunderbird

  • Not suitable for batch conversion.
  • It is a time-consuming process for bulk conversion.
  • Thunderbird does not preserve attachments and body content.
  • There is a risk of data loss, structure, and formatting.
  • Do not keep their original structure, which makes it harder to organise and understand the data.
  • It does not let you easily search for emails by date, sender, or subject. This can lead to extra work and wasted time.

Pro Method to Convert EML to CSV

Expert-designed MailsWare Converter is a highly recommended and widely usable tool. The seamless EML converter is a comprehensive package of accuracy, security, and a quick way to convert EML to CSV.

The EML to CSV converter allows users to convert unlimited EML files in one go. This standalone tool has an easy-to-use interface for both technical and non-technical users. It preserves the email attribute with no data loss. This automated tool comes up with multiple features as mentioned below.

How the EML to CSV Converter Works?

This part contains seamless steps to convert EML to CSV. The Steps are:

  1. Firstly, install and run EML to CSV Converter.
    install and run eml converter
  2. Secondly, select a Folder to load multiple .eml files for the conversion and preview them.
    select eml folder to convert into csv
  3. Now, click on Convert and choose CSV as the preferred saving option.
    select csv as a saving option
  4. Then, set the destination path for the resultant files.
    select destination path
  5. Lastly, click Next, to begin the process of converting EML to CSV format.
    convert eml to csv

Who Should Use the Professional EML to CSV Converter?

  • Enterprises: To keep an organised and structured record of email communications.
  • Legal & Compliance: To maintain email attributes for legal evidence and compliance.
  • Forensics Investigation: To extract valuable attributes for forensic evidence.
  • For Personal Use: User-friendly interface for non-technical users as an easy way to convert EML to CSV without data loss.
  • Converting Crucial EML Data to CSV: If you are converting EML files containing important data. Then you must always go with the professional approach.

FAQs On EML to CSV Conversion Query

Ques: How to convert EML to CSV?

Ans: There are multiple ways to export an EML file to CSV. Such as the manual method and the best automated method.

Ques: Is there a free way to save EML to CSV?

Ans: Yes, through Thunderbird to save EML to CSV is possible, but it comes with multiple limitations.

Ques: Does CSV keep email attachments?

Ans: CSV files mainly store metadata and message text without attachments. However, using a professional-grade tool helps you export attachments separately.

Ques: Is using the EML to CSV converter safe?

Ans: Yes, it is an expert-designed and highly recommended converter tool for the accurate, fast, and quick process.

Final Thought

Handling multiple EML files in an organised and structured way is a challenge for an enterprise. This article comes up with a reliable solution to convert EML to CSV seamlessly. The requirement of exporting EML to CSV is essential for any user who is looking for organised, accurate, and searchable email data. There are methods mentioned for .eml to .csv conversion, but choosing the right one to meet your needs with analyzing the limitations and features of the approach.

Saving EML to CSV through a manual approach using Thunderbird exists, but it often has some limitations and issues while converting. On the other hand, the standalone tool EML to CSV converter, which is expert expert-recommended solution for bulk, fast, accurate, safe, and quick conversion without losing any information.

Keeping structured data and efficiently dealing with EML files, choose a one-time investment in an automated EML to CSV converter tool to ensure management of email attributes, accuracy, and safety.

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