EML viewer online

Safe & Secure Platform to read EML Files

🔒 Your data stays safe on your device, and previews happen in your web browser

Uploading...

EML Reader is a free online tool that lets you instantly open and read EML email files right in your browser. View full message details, sender and recipient info, and attachments in a clean, readable layout. Simply drag and drop one or more EML files — no setup, no waiting. Everything runs locally in your browser, so your emails stay completely private and secure.

Multi-Platform Support

platforms

You can use our reader on all major operating systems with a stable internet connection.

Why choose our Free Online EML Viewer?

No installation, no hassle

Open .EML messages right in your browser — no setup, no EXE, no plugins. Just upload the file and read it instantly. You don’t have to install any desktop viewer or “portable” utility.

Works everywhere

Mac, Windows, Linux, Chromebook, Ubuntu — if it has a browser and internet, it can open your EML. You can even view emails from a phone or tablet. No Outlook, no Thunderbird required.

Instant preview of your emails

Drag & drop an EML file — get a clean preview in seconds. The viewer shows the full message body, headers, and formatting, directly in the browser. No waiting for a download or import.

Simple, even for non-technical users

The interface is clean and straightforward. You don’t need IT skills — just choose a file and view it. The flow is step-by-step: upload → preview → read. That’s it.

Attachments and metadata included

See every detail of the email: sender, recipient, subject line, date and time, and more. Attachments are not ignored — you can view the message and also download attached files separately.

FAQ ▼

What is an EML file?

An EML file is an email message saved in the standard format used by many email clients such as Outlook Express, Thunderbird, and Apple Mail. It contains the full content of an email, including sender, recipients, subject, body text, and attachments. With Coolutils Online EML Viewer, you can open these files instantly in your browser without installing any software.

How do I open an EML file online?

To open an EML file online, visit the Coolutils Free EML Viewer page, upload your email file, and click "View." In just a few seconds, you'll see the full message text, sender and recipient details, and any attachments directly in your browser. No setup or additional programs required.

Can I view attachments from EML files?

Yes, the Coolutils Online EML Viewer not only displays the email message but also shows a list of all attachments. You can preview or download them individually Ч whether they are images, PDFs, or documents Ч with just one click, without needing any email software installed.

Is Coolutils EML Viewer secure?

Yes, it's completely safe. All files are transferred via a secure HTTPS connection and automatically deleted from our servers within 24 hours. We never share or analyze your data, so you can view even sensitive or business emails with confidence and privacy.

Convert from EML

Using CoolUtils, it is possible to convert EML files to a variety of other formats: