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MBOX to CSV

MBOX to CSV

Data Extractor

Convert MBOX files to CSV, Excel, JSON, or XML on Mac. Local processing, MIME decoding, date cleanup, and attachment extraction.

100% Offline No Data Collection Free Tier Mac App Store
Download on the Mac App Store
Utilities macOS

Privacy & Security

All data processing happens locally on your device. No uploads, no tracking, no accounts required.

100% local processing

Every conversion runs entirely on your Mac. No email content is uploaded to external servers or cloud services.

No account required

Start converting immediately. No sign-up, no email verification, no user tracking of any kind.

No analytics or ad tracking

The app contains no behavior analytics, ad pixels, or third-party tracking SDKs.

You control your files

Input files, output location, and retention are entirely under your control on your own device.

Features

Multiple Output Formats
Convert MBOX files into CSV, XML, JSON, Excel, or plain text — ready for any workflow.
Advanced Data Cleaning
Standardize dates, decode MIME and Base64 text, strip HTML tags, and remove duplicate lines automatically.
Attachment Extraction
Automatically save attached files to a dedicated folder for easy management and archiving.
Handle Massive Files
Efficiently process large mailbox files with optimized streaming technology.
File Splitting
Split large outputs into manageable chunks with customizable options.
Free Tier Included
Files under 50 MB convert completely free — no time limits, no hidden costs.

How It Works

1

Step 1

Import one or many MBOX files from Gmail Takeout, Thunderbird, Apple Mail, or any compatible source

2

Step 2

Pick your output format — CSV, Excel, JSON, XML, or plain text

3

Step 3

Enable cleanup rules like date normalization, MIME decoding, and HTML stripping

4

Step 4

Export structured files and extracted attachments to a folder you control

Use Cases

Legal and compliance email audits
Produce filterable spreadsheets from large mailbox exports so legal teams can search messages by date, sender, or keyword in minutes rather than scrolling through a mail client.
Data analysis and reporting
Turn raw email archives into normalized tabular data that analysts can join with CRM records, support tickets, or incident logs to uncover communication patterns.
Platform migration and archival
Extract and restructure historical MBOX archives into portable formats before switching email providers, shutting down legacy servers, or enforcing data retention policies.

Compatible Sources & Providers

Works with all major email clients, cloud services, and data sources.

Gmail (Google Takeout)

Import MBOX archives exported via Google Takeout and convert them into spreadsheets without scripting or command-line tools.

Apple Mail

Process mailbox exports from Apple Mail and get consistent columns for sender, recipient, date, and body across every message.

Mozilla Thunderbird

Convert Thunderbird-format MBOX files into clean CSV or Excel outputs, preserving folder structure metadata.

Fastmail

Handle archived mailbox exports from Fastmail using the same drag-and-drop workflow used for other MBOX providers.

Postbox and other MBOX clients

Any desktop email client that stores mail in standard MBOX format works with the importer out of the box.

How It Compares

SysTools MBOX Converter

Typical use

A Windows-first desktop tool popular in enterprise environments that converts MBOX to PST, MSG, EML, PDF, and other formats. Starts at $49 one-time with a 25-email free trial limit.

Great Apps advantage

MBOX to CSV is purpose-built for macOS with a streamlined interface focused on spreadsheet-ready output. It includes advanced data cleaning like MIME decoding and date normalization that SysTools does not emphasize, and the free tier covers full files up to 50 MB.

Aid4Mail

Typical use

An enterprise-grade email forensics and migration tool supporting 40+ formats. Geared toward eDiscovery, legal, and large-scale migration projects with pricing to match.

Great Apps advantage

MBOX to CSV is far simpler to operate for day-to-day extraction jobs. There is no steep learning curve, no complex licensing, and the output is optimized for spreadsheet and BI workflows rather than forensic investigation.

Online MBOX converters

Typical use

Browser-based tools like GroupDocs, Advik, and BitRecover that let you upload an MBOX file and download a converted output. Convenient for quick one-off jobs when privacy is not a concern.

Great Apps advantage

MBOX to CSV processes everything locally on your Mac, so sensitive email content never leaves your device. It also handles larger files, offers richer cleanup options, and does not require an internet connection.

What Users Say

★★★★★

“We converted five years of support team archives into one clean dataset and eliminated the manual cleanup from our monthly reporting cycle.”

Support Operations Lead
★★★★★

“Date normalization and MIME decoding saved our legal review team hours on every export batch. The output dropped straight into our review platform.”

eDiscovery Analyst
★★★★★

“I needed to migrate a decade of Thunderbird mail into a data warehouse. The CSV output was clean enough to load directly without any custom parsing scripts.”

Data Engineering Manager

Frequently Asked Questions

What file formats can MBOX to CSV export to?

You can export to CSV, Excel (XLSX), JSON, XML, and plain text. Each format preserves consistent columns for sender, recipient, subject, date, and message body.

Does MBOX to CSV work with Gmail Takeout exports?

Yes. Google Takeout produces standard MBOX files that you can drag directly into the app and convert without any extra steps.

How large of an MBOX file can the app handle?

The app uses streaming technology to process multi-gigabyte mailbox files efficiently. There is no hard size limit, and you can split large outputs into smaller chunks if needed.

Is my email data sent to any server during conversion?

No. All processing happens locally on your Mac. Your email content never leaves your device.

What does the free tier include?

MBOX files under 50 MB convert completely free with no time limits, no watermarks, and no feature restrictions. Larger files require the full version.

Can I extract email attachments along with the spreadsheet data?

Yes. The app can automatically save all attachments to a separate folder while generating your CSV or Excel output, so you get both structured data and the original files.

How does MBOX to CSV handle encoded or garbled text?

The app automatically decodes MIME and Base64 encoded content, strips HTML tags, and normalizes date formats so the output is clean and human-readable.

Who typically uses MBOX to CSV?

IT administrators, legal and compliance teams, email migration consultants, data analysts, and researchers who need mailbox data in spreadsheet-ready form.

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Ready to get started?

Download MBOX to CSV from the Mac App Store.

Download on the Mac App Store