100% Private & Secure

Free EML Viewer
Read Email Files Instantly

Drop an .eml file to view headers, body, and attachments. No upload — everything stays on your device.

View headers & bodySee attachmentsFull MIME supportWorks with any .eml file

Drop your .eml file here

or click to browse

About

What Is an EML File?

EML is a standard file format for storing a single email message, defined by RFC 822 and extended with MIME for attachments and multipart content. Most email clients — including Microsoft Outlook, Mozilla Thunderbird, Apple Mail, and Gmail (when exporting) — can save or export messages as .eml files.

An EML file contains two main parts: a header section (From, To, Subject, Date, CC, Content-Type, etc.) and a body. The body can be plain text, HTML, or multipart MIME with both text and HTML, plus attachments. Our free EML Viewer parses this structure instantly so you can read the email without installing any software.

Because EML is plain text (with optional base64-encoded parts), it’s easy to archive, move between systems, and inspect. Use the viewer to open saved emails on a machine that doesn’t have an email client, to check exported EML during migration, or to quickly see headers and body of a forwarded message — all while keeping your data completely private.

Features

Features of the EML Viewer

Open EML files with full header and body support

RFC 822 Headers

View From, To, Subject, Date, CC, and Content-Type in a clean table. Decoded and readable.

Plain & HTML Body

Supports multipart MIME: displays text/plain or text/html body with proper formatting.

Attachment List

Lists all attachments with filename and size from Content-Disposition headers.

No Upload

Your files are never uploaded. Your data stays completely private.

Private & Secure

Your emails never leave your device. Ideal for sensitive or confidential messages.

Works Everywhere

Use on Windows, Mac, Linux, or any device. No software to install.

How to use

How to View an EML File Online

Four simple steps — no install, no sign-up

01
01

Open the EML Viewer

Go to the EML Viewer page and you’ll see the upload area.

02
02

Drop Your .eml File

Drag and drop an .eml file onto the area, or click to browse and select one.

03
03

View Headers & Body

Headers appear in a table; the email body is shown below in plain text or HTML.

04
04

Check Attachments

If the email has attachments, they’re listed with filename and size.

Use Cases for the EML Viewer

When and why to open EML files online

Email Archives

Open saved .eml archives from Outlook, Thunderbird, or other clients without installing them.

Support & Legal

View forwarded evidence or support emails without exposing them to any third party.

Migration Checks

Verify exported EML files before migrating to another email client or service.

Development & QA

Inspect EML output from apps or scripts during development and testing.

Quick Previews

Quickly preview an EML file on a shared or locked-down machine where no email client is installed.

Forensics & Audits

Read headers and body of saved emails for audits or compliance checks.

Compare Plans

Free vs Paid — EML Viewer

Get started free, upgrade when you need more power.

Feature
Free
Paid
Daily usage
5 uses/day
Unlimited
File size limit
10 MB
Up to 500 MB
All core features
No software installation
Works on any device
Files stay on your device
Batch processing
Priority support
Upgrade — starting at $6.99/mo
Upgrade to Full Version

Unlock the Full Power of EML Viewer

Remove daily limits, process larger files up to 500 MB, enable batch processing, and get priority support.

Buy Full Version — $6.99/moor $300 enterprise

File Viewers includes:

  • 21 file viewers included
  • Unlimited daily uses
  • 100 MB file size limit
  • All file formats supported
  • Email analysis tools

Also available in the All Tools Bundle

Frequently Asked Questions

Common questions about the EML Viewer

Q1. What is an EML file?
EML is a standard email format (RFC 822) used to store a single email message. Many email clients (Outlook, Thunderbird, Apple Mail, etc.) can save or export messages as .eml. The file contains headers (From, To, Subject, Date, etc.) and the body, and can include attachments via MIME.
Q2. Do you upload my EML file?
No. Your file is processed entirely on your own device and never leaves it. Nothing is sent to our servers or any third party.
Q3. Can I view HTML emails?
Yes. If the EML uses multipart MIME and includes a text/html part, the viewer displays the HTML body. Plain text parts are also supported.
Q4. Can I download attachments?
This viewer lists attachment names and sizes from the EML. To extract or download binary attachments you would need a dedicated EML extractor or your email client.
Q5. Why are some headers missing?
Only common headers (From, To, Subject, Date, CC, Content-Type) are shown in the summary table. The raw message may contain more headers; the parser reads them but the simplified view highlights the most useful ones.
Q6. Does it work on mobile?
Yes. You can open the EML Viewer on a phone or tablet, tap the upload area, and select an .eml file from your device to view it.
Q7. Is the EML Viewer free?
Yes. The tool is free to use with no sign-up, no limits, and no premium tier.
Q8. What if my EML is corrupted?
If the file is malformed or truncated, parsing may fail and you’ll see an error. Try opening the file in an email client to confirm it’s valid, or re-export it from the source.

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