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EML HTML
File conversion

Convert EML to HTML

Verified by Adam B.· reviewed by FE Editorial ·updated Aug 13, 2026
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Is it possible to convert EML to HTML?
Yes - EML converts to HTML.

Open the .eml in Mozilla Thunderbird, then use File > Save As and choose HTML format to extract the message body as a standalone .html file. The main caveat is that inline images stored as separate MIME parts may not appear in the saved file and need to be saved separately.

Also to HTML: ZHELP · WHTML · TEX

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Tested on macOS, Windows & Linux
Last verified Oct 2026

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Why convert EML to HTML?

An .eml file (RFC 822 / MIME) typically contains a text/html MIME section alongside the headers. Extracting that HTML body into a standalone .html file makes the message readable in any browser without a mail client installed, which is useful for sharing on a website or embedding in a report.

How to convert EML to HTML

Mozilla Thunderbird FREE

Open the .eml via File > Open Saved Message, then choose File > Save As > File and select HTML Files (*.html). Inline images stored as separate MIME parts may appear broken in the saved file.

Microsoft Outlook APP

Open the .eml in Outlook, go to File > Save As, and select HTML (*.htm, *.html). Outlook saves an .htm file plus a folder of image resources - keep the folder next to the HTML file for images to display correctly.

About these formats

.EML E-Mail Message (RFC 822 / MIME)

An EML file is one email message saved as a plain-text file - headers, body, and any attachments - in the internet-standard MIME/RFC 822 format. You do not need Microsoft Outlook to open…

Open .EML details →
.HTML HyperText Markup Language Web Page

An HTML file is a web page - plain text with markup tags that a browser turns into the formatted page you see. To view it, double-click and it opens in your browser (Edge, Chrome, Firefox,…

Open .HTML details →

Quality & what to watch

  • Most .eml files already contain a text/html MIME section; the HTML content is extracted, not re-encoded.
  • Inline images embedded as separate MIME parts (not data URIs) may not appear in the saved HTML file and must be saved from the original message separately.
  • Email headers (From, To, Subject, Date) are part of the .eml structure but may not be included in the exported HTML depending on the mail client.

Frequently asked questions

Will the saved HTML file look exactly like the original email?
Usually yes for the body layout, but externally linked images may not load offline and MIME-embedded images may be missing.
What if the `.eml` has no HTML body, only plain text?
The saved file will contain the plain-text content; it opens in a browser but without any HTML formatting.
Is there a way to include the email headers in the HTML output?
Thunderbird does not include headers by default in its HTML export; copy the raw header block from the .eml file manually if needed.