How to Open an EML File — Every Real Method
An .eml file is a saved email — and almost nothing opens it by default. Here are the methods that actually work, with exact steps: in Chrome, in Gmail, in Outlook on the web, on a Mac and on an iPhone. The fastest route on any device: drop the file into our free viewer — it opens instantly and nothing uploads.
On this page
Open an EML file in Chrome
Chrome can't display .eml files natively — clicking one just downloads it again. But Chrome runs web apps perfectly well, and that's the trick:
Open this site (emltool.com) in a Chrome tab.
Drag the .eml file from your Downloads bar or file manager into the drop zone at the top of the page — or click the zone and pick the file.
The email renders immediately: headers, formatted body, attachments. Use the Plain text tab or Export PDF as needed.
Good to know: This works identically in Edge, Firefox, Safari, Brave and Chrome on Android — anything that runs a modern browser.
Open an EML file in Gmail
Gmail can preview .eml attachments, and there's a long-standing trick for opening a local .eml file with it:
In Gmail, click Compose to start a new draft.
Attach the .eml file to the draft (paperclip icon, or drag it into the compose window).
Click the attached file's preview chip in the draft. Gmail opens its message preview: sender, subject, body and any nested attachments.
Discard the draft when you're done — you never need to send it.
Good to know: Limits: Gmail's preview sometimes flattens formatting and won't show full raw headers. If the rendering looks off, drop the same file into the viewer on our homepage instead.
Open an EML file in Outlook on the web
Outlook on the web (outlook.com / Microsoft 365) handles .eml files it received as attachments well, and local files with a similar draft trick:
If the .eml arrived attached to an email: just click it — Outlook on the web previews attached .eml messages natively, including their own attachments.
If the .eml is on your computer: create a new message, attach the .eml file, then click the attachment to preview it. Delete the draft afterwards.
For the full header view (Received chain, SPF/DKIM results), Outlook's preview won't show raw headers — use our homepage viewer if you need those.
Good to know: Classic desktop Outlook on Windows opens .eml files by double-click if it's your default mail app — but this page assumes you're on the web version without that option.
Open an EML file on a Mac
macOS is the easiest desktop platform for EML — Apple Mail reads the format natively:
Double-click the .eml file in Finder. It opens in Apple Mail as a standalone message window — no importing, no account setup required (Mail just needs to be present, as it is on every Mac).
If double-click launches the wrong app: right-click the file → Open With → Mail.
Prefer not to touch Mail at all? Open this site in Safari and drop the file into the viewer — same result, nothing leaves the browser.
Good to know: Apple Mail's own internal storage uses .emlx (a wrapped variant of .eml). Our viewer opens those too, wrapper and all.
Open an EML file on an iPhone
iOS has partial native support — the Mail app can render .eml attachments — but it's inconsistent when the file lives in the Files app:
If the .eml arrived as an email attachment: tap it in the Mail app. iOS renders it as a message preview in most cases.
If the file is in the Files app (or came via AirDrop/Downloads): tapping it often shows nothing useful. Instead, open Safari, go to emltool.com, tap the drop zone, and choose the file via the file picker.
From the viewer you can read the message, save attachments to Files, and use Export PDF → share sheet to keep a PDF copy.
Good to know: The same Safari route works on iPad, and on Android via Chrome — the viewer is just a web page.
FAQ
Why won't my EML file open when I double-click it?
Because nothing on your system is registered to handle it. EML files belong to email clients — if you don't have Outlook, Thunderbird or Apple Mail installed and configured, the OS either shows an error or opens the file as raw text. The no-install fix is a browser-based viewer like the one on our homepage.
Can Chrome open EML files directly?
No. Chrome has no built-in EML renderer — clicking an .eml link just downloads the file, and dragging one into a Chrome tab either re-downloads it or shows unreadable raw MIME text. To open an EML file in Chrome you need a web-based viewer: open emltool.com in a tab and drop the file there.
How do I open an EML file without Outlook?
Three routes: (1) drop it into the free viewer on our homepage — works in any browser on any OS; (2) attach it to a draft in Gmail and use Gmail's built-in preview; (3) install a free desktop client like Thunderbird. For a one-off file, the browser viewer is fastest.
Can I open EML files on Android?
Yes — the same way as on iPhone: open this site in Chrome on Android, tap the drop zone, and pick the .eml file from your Downloads or Files app. Gmail for Android can also preview .eml attachments directly in many cases.