EML Tool is a free, browser-based viewer for .eml, .emlx and .msg email files, plus guides about those formats. It is an independent project, not affiliated with, endorsed by, or sponsored by Microsoft, Google or Apple. Product names appear only to describe compatibility and belong to their respective owners.
Files you open are processed on your own device and never reach our servers. That also means you remain fully responsible for the files you choose to open and for complying with any laws or agreements that apply to their contents. Opening a suspicious email here is safer than opening it in a mail client, but no tool makes malicious attachments safe to download and run — use judgment.
The how-to guides are tested in current software versions and dated, but mail apps and operating systems change their menus and behavior over time. If a step no longer matches what you see, the software has likely updated since our last check — the page's date stamp tells you how fresh it is.
You're welcome to use the tool freely and to read, link to, and reference this site. If you want to republish or substantially reuse our writing elsewhere, link back to the original page — don't pass it off as your own.
This site is provided as-is, free of charge, with no guarantee of accuracy, availability, or fitness for any particular purpose. We're not liable for outcomes of using the viewer or following a guide here — including decisions made based on how an email renders or exports.
See also our Privacy Policy. Last updated: July 24, 2026.