The email category gives message parsers, importers, and forensic tools real, documented fixtures. The EML set is standards-compliant RFC 822/MIME: a plain-text message, a multipart/alternative message carrying both a text and an HTML body, and a multipart/mixed message with a base64-encoded file attachment, each with full headers (From, To, Subject, Date, Message-ID, MIME boundaries). An MBOX mailbox concatenates a short three-message thread with the classic 'From ' separator lines, so you can test mailbox splitting and thread reconstruction. Every message uses fixed dates, message IDs, and boundaries for reproducibility, and every address and name is fictional. Use them to test header parsing, MIME decoding, attachment extraction, HTML-part sanitising, and EML-to-other-format conversion.
Filter email on Browse · 110 files · 11 subcategories
Results start with a representative from each related test family. Use a card’s variant menu or the filters below to reach a specific format, profile, or failure case; every sample retains its own detail page and download.
No, every address, name, and message is fictional, with fixed dates, Message-IDs, and MIME boundaries for reproducibility.
A plain-text message, a multipart/alternative message carrying both text and HTML bodies, and a multipart/mixed message with a base64-encoded file attachment, each with full RFC 822 headers.
It concatenates a short three-message thread with the classic 'From ' separator lines, so you can test mailbox splitting and thread reconstruction.
Header parsing, MIME decoding, attachment extraction, HTML-part sanitising, and EML-to-other-format conversion.
Start with one example from each use-case group, then continue through its other test families. Choose a use case, search, or filter to find a specific profile; a card’s variant menu contains its related samples.
33 test families · 110 available files · Page 1 of 2
Authentication
An email annotated with DKIM-Signature, Received-SPF, and Authentication-Results headers (all reporting pass), for testing email-authentication header parsing. The DKIM signature value is a sample placeholder, not real c
Calendar
RFC 822 message with a text/calendar REQUEST attachment, for calendar invite importers.
Delivery
A bounce / non-delivery report (NDR), a multipart/report message with a human-readable notice, a message/delivery-status part, and the original headers, for testing bounce parsing and delivery-status extraction.
Dsn
SAMPLE delivery/DSN-related .eml (bounce-mailbox-full) for mailbox parsers.
Headers
SAMPLE .eml focusing on auto submitted header behaviour.
Mailbox
A larger mbox mailbox with a six-message back-and-forth thread, for testing mailbox splitting, thread reconstruction, and pagination over more than a couple of messages.
Messages
A multipart/mixed email with a base64-encoded CSV file attachment, for testing attachment detection, decoding, and extraction from an EML message.
Mime
A base64 text/plain message in utf-8 carrying the identical body to the quoted-printable twin beside it. Base64 is opaque to whitespace and line-start characters, so it is the reference side of the pair when a QP decoder
Smime
S/MIME-shaped SAMPLE with a placeholder PKCS7 part (not a real signature) for MIME structure tests.
Threading
A reply carrying the Exchange threading headers (Thread-Topic and a SAMPLE Thread-Index) next to the standard References chain, plus an X-MS header with an empty value. Empty header values are legal and are a common caus
Transactional
An HTML newsletter email (multipart/alternative) with a table-based responsive layout and a List-Unsubscribe header, for testing HTML-email rendering, sanitising, and marketing-email parsing.
Authentication
The failing twin of the all-pass fixture, headers otherwise identical: SPF fail, DKIM fail with a quoted reason property, DMARC fail under p=REJECT. The quoted reason string contains a semicolon-free phrase specifically
Calendar
A meeting-invitation email carrying an iCalendar (.ics) VEVENT with METHOD=REQUEST, for testing calendar-invite detection, ICS extraction, and RSVP handling.
Delivery
SAMPLE delivery/DSN-related .eml (calendar-invite-note) for mailbox parsers.
Dsn
multipart/report delivery-status SAMPLE with action=delayed for DSN parsers.
Headers
The ISO-8859-1 Subject again, base64-encoded instead of Q-encoded. Base64 hides the charset entirely, so this is the fixture that catches a decoder guessing the charset from the octets instead of reading the encoded-word
Mailbox
One mailbox whose four messages each use a different charset and alternate between quoted-printable and base64, with RFC 2047 subjects to match. The file itself is LF-stored while the encoded payloads decode to CRLF text
Messages
An mbox mailbox concatenating a short three-message email thread with the classic 'From ' separator lines and >From body escaping, for testing mailbox splitting and thread reconstruction.
The use-case group filter replaces the long list of category sections.
