Home » Blog » Technology » How to Convert MBOX File to CSV Format to Open in Excel?

How to Convert MBOX File to CSV Format to Open in Excel?

Overview: Expert-tested methods to convert MBOX to CSV are provided by the Turgs team. Explore manual methods like Thunderbird with add-ons and Python scripts to convert MBOX file to CSV format for free. Learn to professionally to complete this conversion process while maintaining all email attributes using best MBOX to CSV converter.
Table of Content
Hide
  1. Why Convert MBOX to CSV?
  2. Methods to Convert MBOX File to CSV Format
  3. Method 1: Using Thunderbird
  4. Limitations of this Method
  5. Method 2: Use Python Code
  6. Method 3: Using an Automated Tool
  7. How to Convert MBOX to an Excel Spreadsheet?
  8. Quick Steps to Use this Tool
  9. Features of this Tool
  10. Conclusion
  11. FAQs 

Converting MBOX files to CSV format involves extracting all email data in MBOX files – email message body, header, and metadata (such as sender and recipient addresses) and exporting it into a tabular format of rows and columns (technically called Comma Separated Values/ CSV).

Often, the converted data is needed to read MBOX emails in Excel/ Google Sheets and filter or sort for financial audits, to extract email addresses from MBOX, or to import into CRMs.

This guide lays out a step-by-step method to convert MBOX file to CSV format, from any email client, such as Thunderbird, Apple Mail, Postbox, Gmail Takeout, or intentionally archived MBOX files.

Let’s get started.

What You Can Do After Converting MBOX to CSV?

MBOX to CSV Conversion has numerous benefits and use cases apart from accessing and sharing emails outside email clients:

  • Enables easy import of email data into CRM.
  • To extract headers or contact details from MBOX.
  • Convert MBOX email data to CSV and create visual charts in Excel .
  • To identify patterns, trends, and insights for easier understanding and analysis.
  • Simplifies managing multiple MBOX files in a single data set.
  • Well-Structed CSV generated from MBOX email is useful for Business audits.
  • To make MBOX email data easily searchable & sortable for record keeping.

For these reasons, IT administrators, data analysts, legal teams, and small business owners need to convert MBOX files to CSV.

How to Convert MBOX File to CSV Format? 

This guide discusses 3 methods to convert MBOX to CSV. All these methods will help you to transform your data into a compatible form that is used as a spreadsheet :

  • Export MBOX to CSV using Thunderbird
  • Python Scripts for MBOX to CSV Conversion
  • Turgs Dedicated Tool for the conversion

Method 1: Using Thunderbird for Conversion

Using Thunderbird is a manual and free way to convert MBOX file to CSV format.  This method is functional for both Mac and Windows. 

Important Note: Install the “ImportExportToolNG” add-ons on your Thunderbird account.

  1. First of all, Download the latest version of Thunderbird on your PC.
  2. Open your Thunderbird Application.
  3. Click on “Tools” from the menu bar at the top.
  4. Select “ImportExportTools NG” >> “Import MBOX Files”.

    tool

  5. After that, choose the “Import One or More MBOX Files” option from the appearing list.

    import one or more mbox

  6. Locate the path of your MBOX file and upload it using the “Open”.

    path of your mbox file

  7. Restart the Thunderbird account.
  8. Right-click on the uploaded MBOX file.
  9. Choose the “ImportExportToolNG” from the appearing list.
  10. Select the “Export All Messages in Folder” >> “Spreadsheet (CSV)”.

    convert mbox file to csv

  11. Lastly, Select the path to save your exported CSV file.

Now open your Excel spreadsheet and then select the “File” tab >> then choose “Open” >> find your exported CSV file, and your CSV file will open in an Excel sheet.

Limitations of this Method

  • Risk of Missing Data.
  • Ill-Structured CSV files are generated from MBOX data.
  • Can fail or be time-consuming for Bulk MBOX to CSV Conversion.
  • Due to bugs, Thunderbird crashed often.
  • Manually extensive for each user.

Method 2: Using Python Code

When technical users or developers need to convert their MBOX email data to CSV format the often rely on Python scripts. It offers more control over the output CSV and field mapping.

To access MBOX email data into excel spreadsheet by converting it to CSV, follow the steps given below:

  1. Download and install the Python interpreter on your computer.
  2. Paste the following code into a text editor like Notepad++.
    import mailbox
    import csv
    import osMBOX_FILE_NAME = "your_mbox_file.mbox"
    OUTPUT_CSV_NAME = "output.csv"
    if not os.path.exists(MBOX_FILE_NAME):
    print("ERROR: MBOX file not found.")
    print("Check the file name and make sure it is in the same folder.")
    exit()print("MBOX file found. Starting conversion...")
    mbox = mailbox.mbox(MBOX_FILE_NAME)
    with open(OUTPUT_CSV_NAME, mode="w", newline="", encoding="utf-8") as csv_file:
    writer = csv.writer(csv_file)
    # Write CSV header
    writer.writerow(["From", "To", "Subject", "Date", "Body"])
    email_count = 0
    for message in mbox:
    email_count += 1
    from_ = message.get("From", "")
    to = message.get("To", "")
    subject = message.get("Subject", "")
    date = message.get("Date", "")
    body = ""
    if message.is_multipart():
    for part in message.walk():
    if part.get_content_type() == "text/plain":
    payload = part.get_payload(decode=True)
    if payload:
    body = payload.decode(errors="ignore")
    break
    else:
    payload = message.get_payload(decode=True)
    if payload:
    body = payload.decode(errors="ignore")
    writer.writerow([from_, to, subject, date, body])
    print(f"Conversion completed. Emails processed: {email_count}")
    print("CSV file created:", OUTPUT_CSV_NAME)

Note: Make sure you modify the name of the input file according to your input file.

  1. Click on File and click on Save as. Name the script and save it as a Python File or .py
  2. You have successfully created a Python Script File to convert MBOX to CSV.
  3. Create a new folder with all the MBOX files that you need to convert and a Python Script File.
  4. Open the folder then Right Click and choose Open in Terminal.
  5. Type dir.
  6. Enter the – python3 .\python-script-file.py
  7. Wait and let the script get executed.
  8. The code will automatically create a CSV file from MBOX.

Why are Python Scripts Not Commonly Used to Convert MBOX to CSV?

Python Script for MBOX to CSV Conversion is not a common approach, as:

  • Requires programming skills
  • Debugging errors can be complex
  • Code generation can be time-consuming
  • Complete CLI-based (No Graphics/ Visual Interface) – Not easy to use

We do not recommend going with this approach to convert MBOX files to CSV format if you are a home user.

Method 3: Convert MBOX to CSV Using Automated Tool 

As manual methods above have multiple drawbacks and to get rid of them, you can use Turgs MBOX Converter Tool. It is a fast and secure way to convert MBOX file in CSV format. Recommended by professionals, it offers some quick and safe steps to complete this process with ease and maintaining the integrity of the entire data.

It is chosen by thousands of users to convert MBOX files to CSV to access MBOX email in an Excel spreadsheet for data sorting, analysis, and record keeping. Engineered to convert MBOX to CSV in bulk without losing or compromising with the data, and all email attribute organized in a proper way for your needs.

It also offers a Demo version that will allows users to convert first 25 files, so that users can understand the working of the tool. After which they ca go for a licensed version to fulfil their conversion needs.

How to Use this Solution? 

  1. Firstly, install the MBOX to CSV converter after downloading it on your machine.

    mbox to csv converter

  2. Secondly, select the MBOX files or folders that you need to convert from MBOX to CSV.

    import mbox files

  3. Preview all the files and folders.

    maintained hierarchy

  4. Select the “CSV” option from the save list.

    csv option

  5. Hit the “Filter Options” tab and enable the required settings to convert the MBOX file to CSV selectively.

    convert MBOX file to CSV selectively

  6. Locate the destination to save your output data file using “Folder”.

    save your output data

  7. Lastly, click on the “Next” button to start the process.

    convert mbox to excel

What is the Best Way to Convert MBOX to CSV? Comparison Table

Feature Thunderbird Python Scripts Turgs Automated Tool
Time Required Time Consuming Coding & Testing takes time Quick Conversion
Ease of Use Moderate Highly Complex Extremely Easy
Technical Skill Basic Thunderbird Operation Advanced programming skills None
Bulk Conversion Limited & unreliable Possible, but complex Yes (designed for bulk)
CSV Structure Inconsistent Depends on Code Well-structured, standardized
Email Metadata Integrity Partial Depends on Code Complete (headers, status, body)
Handling Large MBOX Files Prone to crashes Performance issues possible Optimized for large files
Cost Free Free Paid (demo available)

Why Choose this Advanced & Professional Tool?

  • 100% Secure and Offline MBOX to CSV Conversion – No data leak.
  • Offers selective export of MBOX email folders to CSV.
  • Can convert and export large MBOX files to CSV in bulk.
  • It offers 30+ other options along with CSV to export data.
  • Generates a well-organized CSV file with all email attributes and professional column mapping.
  • Advanced Files exports MBOX files to CSV data based on Date, From/To, and Subject.
  • Our MBOX to CSV converter is compatible with both Mac & Windows.
  • Generates a complete log report of MBOX to CSV conversion for easy data tracking.

Expert Takeaway 

You can convert MBOX file to CSV format using both manual and expert solutions. If you have limited data and CSV structure & data integrity is not a major concern, manual methods may prove reliable. And also, this tool helps users to bulk convert MBOX to CSV while handling large number of files in a best way. It enables you to open MBOX files to Excel spreadsheets without limits or restrictions. Reach out to our experts available 24/7 through Live Chat if you have any queries left.

Frequently Asked Question

Q1: Can I open MBOX files in Excel?

Ans: No! Microsoft Excel cannot open MBOX files directly. In order to access MBOX email data in Microsoft Excel: convert MBOX files into CSV (a tabular file format supported by Excel).

Q2: Is it secure to convert MBOX to CSV online with free tools?

Ans: No! Online MBOX to CSV Converters may lead to a data breach. As you may be required to upload your confidential MBOX files to an external server.

Q3: Can Turgs MBOX to CSV Converter handle 50GB of emails converted from MBOX to CSV?

Ans: Yes! Turgs MBOX to CSV Conversion Tool is an industry-grade utility that helps you convert email stores in MBOX files to CSV without restriction.

Q4: Can I merge multiple MBOX files into one CSV file?

Ans: Yes! Turgs MBOX to CSV Converter software allows selecting multiple MBOX files from your PC, then converts them CSV file. You can further combine these data from these CSVs into one by simply copying and pasting.