.EML File Extension

.EML File Extension

File Type

E-Mail Message

Developer Microsoft
3.5  |  372 Votes
Category Text Files
Format Text and Binary

What is an EML file?

An EML file is an email message saved by an email application, such as Microsoft Outlook or Apple Mail. It contains the content of the message, along with the subject, sender, recipient(s), and date of the message. EML files may also store one or more email attachments, which are files sent with the message.

More Information
Screenshot of a .eml file in Microsoft Mail
EML file open in Microsoft Mail

Microsoft developed the Electronic Mail (EML) format to comply with the industry-standard RFC 5322 for transferring messages between email clients. EML utilizes the Internet Message Format (IMF) syntax for text stored in the messages.

Because of its wide adoption among email clients, EML has become one of the most common email message formats. Some other common email message file types include .MSG .MBOX, .EMLX and .DAT.

NOTE: You can create an EML file with Apple Mail by selecting an email message, then clicking File → Save As... and choosing "Raw Message Source" in the "Format" dropdown menu.

How do I open an EML file?

You can open EML files with a variety of email programs, such as Microsoft Outlook (Windows), Apple Mail (macOS), and Mozilla Thunderbird (multiplatform).

You can also open EML files with various web browsers, including Google Chrome (multiplatform), Microsoft Edge, and Internet Explorer since they are formatted similar to .MHT files. You can change the .eml file extension to .mht and open it directly with the web browser.

Since EML files are partially saved in plain text format you can open them with a plain text editor, such as Microsoft Notepad and Apple TextEdit. However, you may need to change the .eml file extension to .txt.

Open and view .EML files with File Viewer Plus.Free Download

Programs that open or reference EML files

Updated March 18, 2021

Verified by FileInfo.com

The FileInfo.com team has independently researched the E-Mail Message file format and Mac, Windows, Linux, and Android apps listed on this page. Our goal is 100% accuracy and we only publish information about file types that we have verified.

If you would like to suggest any additions or updates to this page, please let us know.