Free EML Email Viewer

Worked example

A 1.2 MB .eml file saved from a mail client, with a PDF invoice attached and an HTML body that loads three images from a remote server. The tool shows the sender, recipients, date and subject, then the body in a sandboxed frame. The three remote images are blocked and counted, because loading them would tell the sender you opened the message. The attachment list lets you download the invoice separately, and "Load remote content" shows the images if you trust the sender.

Which settings to use, and the limits

• Open other email formats here too. Besides .eml, the viewer opens Outlook .msg files, .mbox files, .mht or .mhtml files and winmail.dat attachments. Files inside a winmail.dat are listed as normal attachments. If a message has another email attached, press "Open" next to it.
• Switch between "HTML" and "Plain text". "HTML" shows the formatted message. "Plain text" is safer for suspicious mail and easier to search or copy. "Headers" and "Raw source" show the full header block and the original file.
• Treat the Sender check as a hint. It shows authentication results that the receiving mail server wrote into the file, the number of servers on the route, and a warning when replies go to a different domain from the sender. A forged message can carry forged results, so use it to look closer, not to trust a message.
• Select several emails to make one PDF. Drop or select many files and choose "Oldest first" or "Newest first", then use "Download all as one PDF". The PDF holds each email's headers, text, inline images and attachment list. For the original mail layout, use "Print / Save as PDF" instead. "All attachments as ZIP" collects every attachment.
• Check links before you open them. Clicking a link in the body shows where it really goes and offers "Copy link" or "Open link", with a warning when the link text names a different site.

Common problems and how to fix them

It says the file is empty or is not an email.

Make sure you chose a saved message, not a shortcut or an attachment. If it is a screenshot or a PDF of an email, there is no message data to read. Re-export the email from your mail client as .eml or .msg.

Images in the email are missing.

Images hosted on a remote server are blocked until you press "Load remote content". Images stored inside the email itself appear without that step.

The email shows "no readable body content".

The message may have only attachments, or its body is in a format that is not text. Check the attachment list, the "Headers" view and "Raw source".

Making the PDF fails.

Try fewer emails at once, or press "Print / Save as PDF" instead. If part of the tool failed to load, check your connection and try again.

Some files in a batch were skipped.

The page lists the files it could not read as emails. The others still open. Re-export those from your mail client.

How it compares

A mail client shows an email in the context of your account and usually loads remote images unless you change a setting. This viewer opens one saved file without an account, blocks remote content by default, and shows the headers and raw source. It does not replace a mail client for replying or searching a mailbox.