EML to JSON Converter - Extract Email Data

Convert EML email files to JSON format. Parse headers, body content, and attachments for analysis. Browser-based, private, no uploads needed.

Drag & drop EML file here

Supports .eml email files

Pretty print JSON

Include raw headers

Parse email addresses

JSON Output

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Frequently Asked Questions

EML is the standard file format for individual email messages. It uses the Internet Message Format (RFC 5322) and MIME encoding (RFC 2045-2049). Used by Outlook, Thunderbird, Apple Mail, and other email clients to save emails as standalone files.

All standard headers including From, To, Cc, Bcc, Subject, Date, Message-ID, Reply-To, Content-Type, MIME-Version, X-Mailer, and custom headers. Both structured (parsed) and raw header formats are available.

Headers encoded with =?UTF-8?Q?...?= (Quoted-Printable) and =?UTF-8?B?...?= (Base64) are automatically decoded. This handles international characters in subject lines, names, and other header fields correctly.

Yes. The converter lists all attachments with their filename, MIME type, and size. Attachment content is not extracted (to keep processing fast and private), but metadata is fully available for analysis.

Multipart messages are fully parsed. The converter extracts both text/plain and text/html body parts separately. Nested multipart structures (like mixed and alternative) are properly traversed.

HTML email bodies are extracted separately from plain text. Both formats are included in the JSON output, allowing you to access whichever version you need for your application.

Yes. The converter extracts Message-ID, In-Reply-To, and References headers that identify email threads and conversations. Perfect for building email analytics or thread visualization tools.

Absolutely. All parsing happens locally in your browser using JavaScript. No email content is uploaded to any server. Your EML files never leave your device, ensuring complete privacy.

Inline images appear in the attachments list with their Content-ID (CID) for reference matching. You can identify which images are referenced in the HTML body via cid: URLs.

Yes. Convert EML files to JSON for importing into databases, creating email archives, or building custom email management systems. Perfect for email forensics, backup analysis, or data migration projects.

JSON Output

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