100 KB EML sample file
An EML file of exactly 102,400 bytes. It is a valid Email message file, generated for this site and checked with an independent parser.
Download
sample-eml-100kb.eml
100 KB102,400 bytes
Download 100 KB EMLDirect download. No sign-up and no waiting.
- Type
- message/rfc822
- SHA-256
ee65e5dd9beab4d3a05229a9ec6fa363f43328745361a531989f78504292eadb- Direct URL
https://sampletestfiles.com/downloads/eml/sample-eml-100kb.eml
What is in this file
A single-part plain-text message with standard headers and 306 body paragraphs. Addresses use the reserved example.com and example.org domains. Lines of hyphens at the end bring the message to the exact size.
| Body paragraphs | 306 |
|---|---|
| Headers | From, To, Subject, Date, Message-ID, MIME-Version, Content-Type |
| Content type | text/plain; charset=us-ascii |
| Line endings | CRLF, wrapped at 72 characters |
How the file begins
The opening lines of sample-eml-100kb.eml, exactly as they appear in the file.
From: "SampleTestFiles Samples" <samples@example.com>
To: "Test Recipient" <recipient@example.org>
Subject: Sample email message (100 KB)
Date: Thu, 01 Jan 2026 09:00:00 +0000
Message-ID: <sample-100kb@example.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Hello,
The people, companies and addresses mentioned in these samples are
fictional. Network conditions vary, so measure a download several times
before drawing conclusions. File extensions can be renamed by anyone, soPreview
Shows the first 64 KB of the file.
Where 100 KB matters
A 102,400-byte file that sits exactly on the default request-body limit of Express. These are the default limits a file of this size is useful for testing:
| System | Limit | Note |
|---|---|---|
| Express body parsers | 100 KB (102,400 bytes) by default | A request body of exactly this size passes; anything larger returns 413 Payload Too Large. |
| Gmail message clipping | About 102 KB of HTML | Longer messages are truncated behind a "view entire message" link. |
| Amazon DynamoDB items | 400 KB per item | 100 KB fits; the 500 KB sample does not. |
Use this file for
- Checking email size handling
- Testing help-desk and archiving software
- Testing email parsers and import features
Testing notes for EML
- An HTML body is untrusted HTML and needs sanitising before display.
- Header values can be folded across lines and encoded with RFC 2047 encoded-words; parsers that read headers line by line get subjects wrong.
Technical details
| File name | sample-eml-100kb.eml |
|---|---|
| Format | EML (Email message) |
| Extension | .eml |
| MIME type | message/rfc822 |
| Size | 102,400 bytes (100 KB) |
| Kind | Text |
| SHA-256 | ee65e5dd9beab4d3a05229a9ec6fa363f43328745361a531989f78504292eadb |
| Created | 2026-10-10 |
| Validation | Exact size, signature bytes and structure checked when the file was generated |
| Preview | Available on this page |
| Source | Generated for this site; not copied from elsewhere |
| Licence | Free to use, modify and redistribute (terms) |
| Category | Email & Calendar |
Validated for expected format and integrity. As with any download, scan the file with your own security tools before opening it. How files are made and checked
Download from the command line and verify
Fetch the file with curl, then compare its checksum with the SHA-256 value above.
curl -o sample-eml-100kb.eml 'https://sampletestfiles.com/downloads/eml/sample-eml-100kb.eml'
sha256sum sample-eml-100kb.eml # Linux
shasum -a 256 sample-eml-100kb.eml # macOSOn Windows, run Get-FileHash sample-eml-100kb.eml -Algorithm SHA256 in PowerShell. A matching value proves that the download is complete and unaltered.
Related files
Questions about this file
- Is this file exactly 100 KB?
- Yes. It is 102,400 bytes, which is 100 KB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
- What is inside the 100 KB EML file?
- A single-part plain-text message with standard headers and 306 body paragraphs. Addresses use the reserved example.com and example.org domains. Lines of hyphens at the end bring the message to the exact size.
- Are the email addresses real?
- No. They use example.com and example.org, which are reserved for documentation and cannot receive mail.