EML Viewer opens .eml files, emails saved from Gmail, Thunderbird, Apple Mail or Outlook on the web, and shows the subject, sender, date, message and attachments. No mail app is needed and the email never leaves your device.
What you see
| Part | Shown as |
|---|---|
| Subject, From, To, Cc, Date | A header block at the top |
| HTML message | Formatted, with images placed in the email |
| Plain-text message | The text as written |
| Attachments | A list with names and sizes; click one to save it |
The HTML of the message is cleaned before it is displayed, so scripts in an email are never run.
Where .eml files come from
An .eml file is one email in the standard internet message format (MIME). You usually get one in these situations:
| Program | How to save an email as .eml |
|---|---|
| Gmail | Open the email, click the three-dot menu, choose Download message |
| Thunderbird | Select the email, then File → Save As → File |
| Apple Mail | Drag the email to the desktop or a Finder window |
| Outlook on the web, Outlook for Mac | Download the message or drag it out; it is saved as .eml |
| Any webmail | Forward the email as an attachment; the attached copy is .eml |
When it is useful
- An email forwarded as an attachment: phones and some mail apps show the .eml as a file instead of a message. Open it here to read it.
- Evidence or records: check the exact date, sender address and recipients of a saved message without importing it into your mailbox.
- An old export: read individual messages from a backup when the original account or program is gone.
- Getting an attachment out: save a PDF or photo from inside an .eml without setting up a mail client.
Not supported here
Outlook desktop saves messages as .msg, a different format that this viewer does not open yet. Whole mailbox exports in .mbox format (for example from Google Takeout) open in the main File Viewer, which lists the messages and shows the first one.
Emails are full of addresses, names and private details. Because the file is read in your browser and not uploaded, none of that is shared with anyone.