Open a .eml file
Someone forwards you a .eml as evidence, or you find one in an export, and your computer offers to open it in a mail client you do not want it in. This opens it and nothing else happens.
- Runs entirely in your browser
- Works offline
- No upload
- No sign-up
- No watermark
Loading the tool…
How it works
- Drop the .eml file, or paste the source.
- Switch between the HTML, text and raw source views.
- Save an attachment if you need it, or print the message to PDF.
Why nothing is uploaded
Every operation on this page is done by code running inside your browser tab, using the same engine that renders web pages. The file is read from disk into your tab’s memory, transformed there, and written back out as a download. It is never sent anywhere — not to us, not to a third party.
Verify it yourself
- Open your browser’s developer tools (F12) and select the Network tab.
- Load your file and run the tool.
- The only requests you will see fetch the tool’s own code — and, for a few heavy tools, their open-source engine from a public CDN — plus one small page-view ping to loreatec.jp (page address and title, nothing more). None of them carry your file.
Frequently asked questions
Why are the images not shown?
Because loading them would fetch from the sender’s server, which is how open-tracking works — and for a message you are examining precisely because it is suspicious, that is the one thing you do not want to do. Each image is replaced with its alt text. The HTML is shown in a sandboxed frame, so scripts cannot run either.
Can it open Outlook .msg files?
No. .msg is a proprietary compound-file format, not MIME, and supporting it well would mean shipping a large parser for a format that is easy to avoid: on a Mac, dragging a message out of Outlook gives you a .eml, and any webmail can show you the source. The tool says so rather than half-opening the file.
Is a .eml safe to open here?
The file is parsed as data — no code from it ever runs. Attachments are a different matter: they are extracted for you to save, and what you do with them afterwards is outside any browser’s protection. Executables, scripts and macro-enabled Office files should not be saved unless you are certain.
How do I get a PDF with Japanese text?
Use the print button and choose “Save as PDF” in your browser’s dialog. That path uses the fonts already on your machine, which is the only reliable way to get CJK text into a PDF without embedding a multi-megabyte font.