At One Place

.eml files

.eml file
Email Message
A single saved email, headers and all, in the standard internet message format.

What opens a .eml file

Windows
Microsoft Outlook (built in on Windows 11), Mozilla Thunderbird, Notepad (built in — raw source)
macOS
Mail (built in), Microsoft Outlook, Mozilla Thunderbird
Linux
Mozilla Thunderbird, Evolution, Text Editor (built in — raw source)

What a .eml file is

EML is a plain-text file in RFC 5322 format: the headers, the body and any attachments encoded inline. Nearly every mail client can open one, which makes it the portable way to archive or forward a message with its original headers intact. Those headers are also why EML is what you send to an IT team investigating a phishing report.

Converting it

A .eml file is commonly converted to .pdf, .msg, .html or .txt. It is a plain text format, so any text editor can open and edit it directly.

Details

Extension
.eml
Full name
Email Message
Category
Documents
MIME type
message/rfc822
Created by
IETF (RFC 5322)
Format
Plain text

Common questions

How do I open a .eml file?
On Windows use Microsoft Outlook (built in on Windows 11); on macOS use Mail (built in); on Linux use Mozilla Thunderbird. A single saved email, headers and all, in the standard internet message format.
What is a .eml file?
Email Message. EML is a plain-text file in RFC 5322 format: the headers, the body and any attachments encoded inline. Nearly every mail client can open one, which makes it the portable way to archive or forward a message with its original headers intact.
Can I convert a .eml file?
Yes. It is usually converted to .pdf, .msg, .html or .txt, either by exporting from one of the programs listed above or with a format converter.

Related pages

Sources

  1. Media Types Registry — IANA
  2. Official vendor product documentation — At One Place

How these figures are compiled and checked