Open EML files online
EML is the standard saved-email format and MSG is Microsoft Outlook’s. The viewer parses the message and shows the subject, sender, recipients and body — read an email without Outlook or any mail client installed.
Drop a EML file to open it
or click to choose — everything stays on your device
Choose file🔒 100% private — files never leave your browser
Or turn EML into an image — snapshot the preview, add arrows or notes, and download a PNG.
What is a EML file?
EML is the standard saved-email format and MSG is Microsoft Outlook’s. The viewer parses the message and shows the subject, sender, recipients and body — read an email without Outlook or any mail client installed. The .EML extension identifies a Email message file, which is served with the message/rfc822 media type. You can open it here instantly — drop the file into the box above and it renders in your browser. Nothing is uploaded.
Besides this free online viewer, you can open Email files in desktop apps such as Microsoft Outlook, Apple Mail, Mozilla Thunderbird — but here all you need is a web browser.
Quick facts
| Format | Email — Email message |
|---|---|
| File extensions | .eml .msg |
| MIME type | message/rfc822 |
| Developer | IETF / Microsoft |
| Category | Office documents |
| Also opens in | Microsoft Outlook, Apple Mail, Mozilla Thunderbird |
How to open a EML file online
- Click Choose file above, or drag your EML file onto the box.
- The right viewer loads automatically and renders your file.
- Read, scroll or page through it. To open a different file, choose Open another file.
100% private — files never leave your browser.
Libraries used to render EML in the browser
This viewer is built entirely with open-source JavaScript that runs in your browser:
Frequently asked questions
What is a .EML file?
A .EML file is a Email message, identified by the message/rfc822 media type. You can open and read it instantly in the viewer above without installing anything.
What programs open EML files?
On the desktop, EML files typically open in Microsoft Outlook, Apple Mail, Mozilla Thunderbird. Online, this page opens them in any modern browser — nothing to download.
How do I convert EML to an image?
Use Snapshot to capture the EML preview, optionally add arrows, text or highlights, then download it as a PNG image.
Is it safe to open my EML file here?
Yes. The file is read and rendered entirely by JavaScript inside your own browser. It is never uploaded to a server, so nothing leaves your device.
Do I need to install anything to view a EML file?
No. There is nothing to install and no account to create. Open the page, drop your file, and it displays instantly.
Does it work on my phone or iPad?
Yes. The viewer is fully responsive and works in modern mobile and tablet browsers such as Safari and Chrome.
Is there a file size limit?
There is no hard limit, but very large files depend on your device’s memory. Big files are processed in the background so the page stays responsive.