100% Private & Secure

Free MBOX Converter
Convert to Any Format

Convert MBOX, MBX, and MBS files to EML, EMLX, MSG, PST, PDF, CSV, HTML, TXT, or JSON. Supports Thunderbird, Gmail Takeout, Yahoo, Apple Mail, and more.

9 output formatsBatch file supportThunderbird & Gmail compatibleInstant conversion

Drop MBOX files here

or click to browse · select multiple files

Overview

What Is MBOX to HTML Conversion?

MBOX is a format that stores many email messages in one file — used by Mozilla Thunderbird, Apple Mail, and Gmail Takeout. MBOX to HTML conversion turns that mailbox into a single HTML web page. You get one .html file that you can open on any device to view all messages, without needing an email client or app.

HTML is the same format used for web pages. When you convert MBOX to HTML, each message is rendered in a readable layout (headers, body, and basic formatting) inside one document. Double-click the file and it opens in Chrome, Firefox, Safari, or Edge. You can scroll through emails, use the find/search, and archive or share the file easily.

Our free MBOX to HTML converter processes on your device. You drop an .mbox file, keep HTML selected as the output format, and click Convert & Download. All processing happens on your device; nothing is uploaded. The result is a portable, human-readable archive that works on any device — useful for backup, sharing threads, or viewing mail when you don’t have access to your email client.

Features

Features

Why use the MBOX to HTML converter

View on any device

HTML opens in Chrome, Firefox, Safari, Edge, or any device. No email client needed — just double-click the file or open it from a link.

One file per mailbox

All messages from your MBOX are combined into a single HTML page with clear separation, so you can scroll and read everything in one place.

No upload

Conversion processes on your device. Your MBOX file stays on your device — nothing is sent to our servers.

Private & secure

Your mailbox is never uploaded. Ideal for personal or work email you want to archive or view offline as HTML.

Preserves formatting

HTML keeps links, basic formatting, and structure so emails look readable when opened on any device.

Works with any MBOX

Use MBOX from Thunderbird, Gmail Takeout, or Apple Mail. One tool for all sources.

How it works

How to Convert MBOX to HTML

Four steps — no install, no sign-up

01
01

Open the MBOX to HTML Converter

Come to this page — HTML is already selected as the output format.

02
02

Drop your MBOX file

Drag and drop your .mbox file or click to browse. Works with Thunderbird, Gmail Takeout, and other MBOX exports.

03
03

Review the preview

Check the email count and preview table. Ensure HTML is selected as the output format.

04
04

Convert & download

Click Convert & Download. You get a single .html file. Open it on any device to view and archive your emails.

FAQ

Frequently Asked Questions

Common questions about MBOX to HTML conversion

Q1. What is MBOX to HTML conversion?
MBOX to HTML means turning an MBOX mailbox file (many emails in one file) into a single HTML web page. That page contains all messages in a readable layout so you can open it on any device without an email client.
Q2. Why use HTML format for emails?
HTML is universal: every device can open it. Converting MBOX to HTML lets you view and archive emails anywhere, share a single file that opens on any device, and keep a long-term backup that doesn’t depend on Mail, Outlook, or Thunderbird.
Q3. How does web-based viewing work?
After conversion you download one .html file. Double-click it (or open it from your file manager) and it opens on your device. You can scroll through all messages, use the find feature to search, and save or print the page as needed.
Q4. Do you upload my MBOX file?
No. The converter processes entirely on your device. Your MBOX is read and converted on your device; nothing is sent to our servers.
Q5. Can I save the HTML as PDF?
Yes. Open the downloaded HTML file, then use Print → Save as PDF (or your system’s PDF printer) to create a PDF from the same content.
Q6. Is the MBOX to HTML converter free?
Yes. The tool is free to use with no sign-up. There is no file size limit other than what your device can handle.
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