Friday 19th September 2025

Summary: MBOX files, also called “mailbox,” are created or supported by multiple email clients such as Thunderbird, Apple Mail, Eudora, SeaMonkey, etc. This single file format has multiple emails with intact attachments. On the other side, CSV holds bulk data in tabular form. Excel spreadsheets are stored as CSV files. CSV makes the ability to store both contacts and emails. Several email clients allow you to download your contacts as a CSV file. If users want to convert MBOX to CSV for Excel then this updated guide will be helpful for users who need a simple MBOX to CSV conversion.

Users Query:-

Hi, I am Sydney Williamson from Colorado Springs, United States. I am working in a law firm. Recently, my company gave me 2K emails whose format is MBOX and they asked me to save the email contact to an Excel sheet. I searched for free solutions on AI tools and Google and I found a free method that can convert MBOX to CSV using Python. But the problem is here, I don’t know Python language, so “How can I save my large emails to CSV?” Anyone, please suggest a simple method.

After knowing the need for MBOX to CSV conversion users are now unsure which method is truly reliable to convert MBOX emails to CSV for Excel.

Top Reasons to Convert MBOX to CSV

  • Easy data management: Spreadsheet applications such as Google Sheets and Microsoft Excel make it simple for users to extract or examine CSV files.
  • Easily import into database: CSV files are a widely used format and they can also be opened or accessed in multiple apps like CRM or business applications.
  • Lightweight Format: CSV files can be easily filtered, rather than MBOX files. This file format does not take up too much space in the system.
  • Simply share: Anyone can easily share a CSV file once the MBOX file is converted because it doesn’t need any email client to open emails.
  • Backup or Archiving: Emails that are saved in CSV can be maintained for long-term archives.
  • Better availability: Unlike the MBOX file, a CSV file can be easily opened with multiple platforms or operating systems without installing a specific email application.
  • Quick Filter: Email data can be filtered once they are converted to CSV, such as specific emails, subject, sender, recipient, date, etc.
  • Flexibility: Converting MBOX files into CSV for Excel also gives you the flexibility to migrate email into other systems without support for the MBOX format.
  • Easy tracking: Another feature of a CSV file is that it can be easily analyzed by using tracking communication patterns or extracting statistics.

For this reason, users need to export MBOX to Excel CSV format. Back to the main point, users need a method to convert MBOX to CSV, but which method is good, manual or professional?

switch-mbox-to-csv

DIY (Free) Method: Migrate MBOX to Comma-separated-value by Python

DIY method can be use to shift emails from MBOX to CSV. Nevertheless, there are some limitation to exporting MBOX emails. Users can use Python to export MBOX to CSV:-

Steps to Use Python to Convert from MBOX to CSV:-

  • Install necessary libraries:

pip install mailbox pandas

  • Use this Python script to convert MBOX to CSV:

import mailbox
import csv

def convert_mbox_to_csv(mbox_file, csv_file):
mbox = mailbox.mbox(mbox_file)
with open(csv_file, ‘w’, newline=”, encoding=’utf-8′) as f:
writer = csv.writer(f)
writer.writerow([“Subject”, “From”, “To”, “Date”, “Body”])

for message in mbox:
subject = message[‘subject’]
sender = message[‘from’]
recipient = message[‘to’]
date = message[‘date’]
body = message.get_payload(decode=True)

writer.writerow([subject, sender, recipient, date, body])

# Example Usage
convert_mbox_to_csv(’emails.mbox’, ’emails.csv’)

  • Run the script.

python mbox_to_csv.py

Export MBOX to CSV by Mozilla Thunderbird Freely

  • Install or Set Up Thunderbird – Download or install Mozilla Thunderbird and log in with your email ID & password.
  • Import MBOX File – Add MBOX file or backup into Tbird. The ImportExportTools NG add-on allows users to import MBOX files into Thunderbird. Once the import process is done, check that all emails appear in Thunderbird.
  • Export Emails—Open the mailbox folder containing emails. After selecting every email, right-click and select >> ImportExportTools NG and go with this message, ‘Export All Messages,’ and choose this option, ‘Spreadsheet (CSV).’
  • Save as CSV—Thunderbird will export the selected messages in CSV format. Users can open emails now in Excel, Google Sheets, or any text editor.

Free Method (Pros & Cons) When Exporting MBOX to CSV

Pros:-

  • Complete Free No need to charge to convert MBOX emails to CSV.
  • Best for bulk conversion from MBOX to CSV.
  • Customizable for technical users and doesn’t need to install MBOX-supportive email clients.

Cons:-

  • Require Python Language.
  • Trouble handling complex email structures.
  • Do not convert, corrupt, or damaged MBOX files.
  • With a single mistake, the user can lose all MBOX data.
  • Required email client installation to export MBOX emails as Comma-separated-value format.

Accurate Solution: Export | Convert MBOX to CSV (Mac & Windows)

After knowing the free solution to export mailbox files to CSV, users want a safe, accurate, and trustworthy solution to transform MBOX to CSV. Users can download the BLR MBOX file converter to convert damaged, corrupted, or other types of MBOX files to CSV for Excel format without any trouble. This single tool can convert MBOX to PST, PDF, EML, EMLX, HTML, MHTML, and multiple other file formats without installing multiple software or email clients.

migrate-mbox-to-csv

This software solution can also export/import MBOX files into Gmail, O365, and IMAP accounts. Users can download this simple software in any Windows OS edition, such as Windows XP, Vista, 7, 8, 8.1, 10, and 11. No worry when using this software, as this program keeps the original email data structure safe and secure. Get the converter for MBOX file and easily export the first 15 emails from MBOX to CSV for an Excel spreadsheet.

Features/Specifications in Proficient Software:-

  • Taking less time to convert bulk MBOX files to CSV.
  • Easy to handle by technical and non-technical users without experience.
  • Effortless to download on a Laptop or PC.
  • Convert MBOX files to a comma-separated format, aka [CSV] with attachments.
  • Preview features available.
  • Easy-to-understand graphical user interface.
  • Convert MBOX to MHTML, HTML PST, PDF, PNG, JPG, etc. format without needing another software.
  • 5 Simple steps to convert MBOX to CSV
  • No data loss once the conversion process begins.

Steps to Export MBOX Emails to CSV with Attachments:-

  • Download the BLR Tools MBOX mailbox file converter tool on a PC.
  • Start the tool and select the MBOX files from the PC.

select-mbox-files

  • Before continuing to the following stage, view MBOX files.

preview-selected-mbox-files

  • Choose the CSV format from the list.

choose-csv-format

  • Select the destination location to save converted CSV files.
  • Use the filter features for advanced MBOX to CSV conversion.

convert-mbox-to-csv

  • After filtration, click the “Convert” icon to begin the conversion procedure.

Take Attention:- If users have the bulk of MBOX emails that they want to convert into CSV format then they can purchase a complete edition of BLR MBOX email converter software. The free demo version only converts the first 15 MBOX files to CSV without any charge.

Concisely,

Exporting MBOX files to CSV on Windows and Mac can be an exhausting task. If users know how to work with the free method, then they can transform their mailbox files to CSV. Nevertheless, in this world, millions of users still don’t know how to use Python to convert MBOX to CSV. If you are one of them, then don’t worry, use the suggested software solution to export MBOX emails to CSV with attachments. This solution will be helpful to convert all MBOX files to CSV.

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