EML Viewer — Open EML & MSG Email Files Online
A free online EML viewer that opens .eml, .emlx and Outlook .msg files instantly — no mail app, no sign-up, no install. Drop a file below to read the message, inspect the headers, preview inline images and download attachments. 100% in your browser — nothing uploads.
Drop .eml or .msg files here — or click to choose
Opens instantly. Your files never leave this device — parsing runs 100% in your browser.
How to use this free online EML viewer
Drop your file. Drag an .eml, .emlx or .msg file into the box above — or click the box and choose files. You can open several at once; they stack up in a list on the left so you can flip between messages.
Read the email. The viewer shows a header card (From, To, Cc, Date, Subject) and renders the HTML body exactly as a mail client would — with a Plain text tab if you prefer the raw text version.
Grab the attachments. Every attachment is listed with its name, type and size. Click Download to save any of them to your device.
Export to PDF if you need a copy. The Export PDF button opens a clean print view of the message — choose 'Save as PDF' in your browser's print dialog to keep a permanent, shareable copy.
Why you need an EML file viewer at all
EML is the near-universal format for a saved email — Gmail, Outlook, Thunderbird and Apple Mail all produce it when you download or export a single message. The catch: once an email leaves the mail app, almost nothing on a normal computer will open it. Double-click an .eml file on Windows and it tries to launch Outlook or Windows Mail; on a work machine without a configured mail client you get an error or a wall of raw MIME text in Notepad. Browsers are no help either — Chrome simply re-downloads the file instead of displaying it.
That's the gap an online EML viewer fills. Situations where this page earns its keep:
- A colleague forwarded an email as an attachment. Many corporate mail systems attach the original message as an .eml file. If your webmail won't preview it, this viewer will.
- You're digging through an email archive or backup. Exports from Gmail Takeout, Thunderbird folders or e-discovery tools arrive as piles of .eml files. Open them here one by one — or several at once — without importing anything into a mail client.
- You need to inspect a suspicious email safely. Saved a phishing sample? The viewer renders it in a sandboxed frame with scripts stripped and disabled, and shows you the full headers — so you can check the real sender and Received chain without risking a live mail account.
- You got a .msg file but don't have Outlook. Outlook's proprietary .msg format is even less portable than .eml. This viewer opens both — no Outlook licence required.
- You need the email as evidence or a record. Open the file, hit Export PDF, and you have a clean, printable copy with the sender, date and full body preserved.
What this EML file viewer shows you
From, To, Cc, Reply-To, Subject and Date — with international (RFC 2047) encoded names decoded properly, so 'José García' doesn't render as line noise.
The formatted message as the sender designed it, rendered in a sandboxed frame with scripts removed. Inline cid: images are resolved and displayed in place.
Every email's text/plain alternative one click away — handy for copying quotes or reading a heavily-designed newsletter as clean text.
Every attachment listed by name, MIME type and size, each with a one-click download. Nested .eml messages attached to the email are extracted too.
Open a whole folder's worth of saved emails in one session and switch between them in the sidebar — nothing to import, nothing to clean up afterwards.
A print-optimized view of the current email, one click away. Use your browser's 'Save as PDF' to archive or share the message.
Private by architecture — not by promise
Most "free online viewer" sites work by uploading your file to their server, converting it there, and showing you the result. For email that should give you pause: a single .eml file can contain your correspondence, other people's addresses, internal documents and legal material. You shouldn't have to trust a stranger's server with that just to read a message.
This viewer takes the other route: the parser is JavaScript running on your own device. The file is read locally, decoded locally, and rendered locally. There is no upload endpoint — the site is static pages. That's also why it's fast (no upload wait, even for a 25 MB email full of attachments) and why it keeps working if you cut your internet connection after the page loads. When you close the tab, everything is gone; nothing is stored anywhere.
EML, EMLX and MSG — what's the difference?
The standard 'one saved email' format — a plain-text MIME (RFC 822) file with headers, body and base64-encoded attachments. Produced by Gmail ('Download message'), Outlook, Thunderbird and most mail servers. Read more on our What Is an EML File page.
Apple Mail's variant, used internally on macOS — an .eml message wrapped with a length prefix and a property-list footer. This viewer strips the wrapper automatically.
Microsoft Outlook's proprietary binary format (an OLE compound file, not readable as text). Needs a dedicated parser — which this viewer includes, so .msg files open here just like .eml. Details on the MSG viewer page.
FAQ
What is an EML viewer?
An EML viewer is a tool that opens .eml email files — the standard format used when you save or export a single email message — and displays them the way your mail app would: sender, recipients, subject, date, the formatted message body and any attachments. This page is a free online EML viewer that runs entirely in your browser.
Is this online EML viewer really free?
Yes. The viewer is completely free, with no sign-up, no file limits, no watermarks and no 'pro' upsell. It works because the heavy lifting happens on your own device — we never pay to store or process your files, so we don't need to charge you.
Are my email files uploaded to your server?
No. Files are parsed 100% in your browser using JavaScript — nothing is uploaded anywhere. You can verify this yourself: load the page, disconnect from the internet, and the viewer keeps working. Your emails, attachments and headers never leave your device.
Can I open Outlook .msg files too?
Yes. Alongside .eml and .emlx, the viewer reads Outlook's proprietary .msg format directly in the browser — sender, subject, body and attachments included. See the MSG viewer page for details on how .msg differs from .eml.
How do I open an EML file in Chrome?
Chrome can't render .eml files natively — clicking one usually just downloads it again. The fix: open this page in Chrome, then drag the .eml file into the drop zone (or click it and pick the file). The email renders instantly. Step-by-step instructions are on our How to Open an EML File page.
Can I save the email as a PDF?
Yes. Open the email, click 'Export PDF', and your browser's print dialog opens with a clean, print-friendly copy of the message — choose 'Save as PDF' as the destination. Headers, body and formatting are preserved.
Can I view attachments inside the EML file?
Yes. Every attachment in the message is listed with its filename, type and size, and each has a download button. Inline images referenced by the email body (cid: images) are displayed in place inside the message, just like in a mail client.
Does the viewer run scripts inside the email?
No. The HTML body is sanitized and rendered inside a sandboxed frame with scripts disabled, so tracking pixels with scripts, forms and other active content in a suspicious email can't run. It's a safe way to inspect an email you don't fully trust.