This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

How to open .eml files

  • 1 reply
  • 1 has this problem
  • 1 view
  • Last reply by Moses

more options

I cannot open .eml files.

I cannot open .eml files.

All Replies (1)

more options

I'd be surprised if you could open them on Firefox. An EML file is an archived email that preserves the original HTML formatting and headers. Most mail clients support EML files, but if you don't have an email client installed, or are using a mobile device, there are workarounds you can use to open the file.

This file type is supported by Microsoft Outlook / Outlook Express. Firefox cannot display these natively.

You can try two things.

  • To open the .eml in Firefox, change the .eml extension to .mht
  • Open the .eml in Outlook.

Note: If you use Windows Live Mail

Some users have reported that backups created with Windows Live Mail have corrupted EML extensions (*._eml instead of *.eml). If the EML file isn't opening, check that the extension is not messed up.

Modified by Moses