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.
Drop MBOX files here
or click to browse · select multiple files
What Is MBOX to EMLX Conversion?
MBOX is a format that stores many email messages in one file, used by Thunderbird, Apple Mail exports, and Gmail Takeout. EMLX is Apple Mail's format for a single message: one .emlx file per email, with headers and body. MBOX to EMLX conversion takes your multi-message MBOX file and produces one EMLX file per message, so you can import them into the Mail app on macOS.
Apple Mail uses EMLX files inside its mailbox data. When you convert MBOX to EMLX, you get individual message files that Mail can open and that you can organize in folders or use for backup. This is especially useful when moving from Thunderbird or Gmail to Apple Mail, or when you have an MBOX export and want it in a format native to your Mac.
Our free MBOX to EMLX converter processes on your device. You drop an .mbox file, leave the output format as EMLX (or select it), and click Convert & Download. Each message is converted to .emlx and downloaded. All processing happens on your device; nothing is uploaded to any server. You can then add the EMLX files to your Apple Mail mailbox or archive them.
Features
Why use the MBOX to EMLX converter
Native Apple Mail format
EMLX is the format Apple Mail uses for individual messages. Convert MBOX to EMLX for seamless import into Mail on macOS.
One message per file
Each email becomes a separate .emlx file with headers and content, ready to drag into Apple Mail or store in Mail folders.
No upload
Conversion processes on your device. Your MBOX file never leaves your device — ideal for personal or work email.
Thunderbird & Gmail Takeout
Works with MBOX from Mozilla Thunderbird, Gmail Takeout, or any source. Convert and import into Apple Mail on your Mac.
How to Convert MBOX to EMLX
Four steps — no install, no sign-up
Open the MBOX to EMLX Converter
Go to this page — EMLX is already selected as the output format.
Drop your MBOX file
Drag and drop your .mbox file (from Thunderbird, Gmail Takeout, or Apple Mail export), or click to browse.
Review the preview
Check the email count and preview table. Switch to EMLX if another format was selected.
Convert & download
Click Convert & Download. Each message is saved as a separate .emlx file. Import them into Apple Mail on your Mac.
Frequently Asked Questions
Common questions about MBOX to EMLX conversion
Q1. What is EMLX?
Q2. How does Apple Mail use EMLX?
Q3. Why convert MBOX to EMLX?
Q4. Do you upload my MBOX file?
Q5. Can I convert Gmail Takeout MBOX to EMLX?
Q6. Is the MBOX to EMLX converter free?
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