A free EML viewer opens raw email files and turns the headers, MIME structure, attachments, and body preview into a readable diagnostic report. Files are parsed locally in your browser.
sample-message.eml
Key message metadata from the EML headers.
Plain text, HTML, and attachment parts detected from MIME boundaries.
Here is your weekly inbound email digest. Three new parsing events are ready for review.
Here is your weekly inbound email digest. Three new parsing events are ready for review.
<p>Here is your <strong>weekly inbound email digest</strong>.</p>
id,status 1,ok 2,retried
text/csv · 36 B
attachment; filename="events.csv"
| Name | Value |
|---|---|
| From | "Launch Bot" <updates@example.com> |
| To | Support <support@mailparse.dev> |
| Subject | Weekly inbound email digest |
| Date | Wed, 18 Mar 2026 14:02:55 +0000 |
| Message-ID | <digest-123@example.com> |
| Return-Path | <bounce@example.com> |
| Content-Type | multipart/mixed; boundary="mailparse-demo" |
Choose a .eml file from your computer or paste raw EML source into the editor.
Check the sender, recipients, subject, content type, MIME part count, attachment count, and warnings.
Use the header table, MIME part list, attachment summary, and preview text to debug the email file.
An EML file viewer opens a raw email message file and shows the headers, sender, recipients, MIME parts, attachments, and message body in a readable format.
No. This viewer reads the file with browser JavaScript and parses it locally. The email content is not uploaded to MailParse or any third-party server.
Yes. It detects MIME parts marked as attachments and shows the filename, content type, disposition, and encoded part size when that metadata exists in the EML file.
Most EML files include From, To, Subject, Date, Message-ID, Return-Path, and Content-Type headers. Missing headers can make debugging or import workflows harder.
Yes. The viewer is useful for checking MIME boundaries, transfer encodings, text versus HTML parts, attachment metadata, and the exact headers an inbound email parser receives.