http header
From header
The HTTP From request header contains an Internet email address for an administrator who controls an automated user agent.
If you are running a robotic user agent (a web crawler, for example), the From header must be sent in requests so you can be contacted if problems occur, such as a bot sending excessive, unwanted, or invalid requests.
[!WARNING] You must not use the
Fromheader for access control or authentication.
| Header type | [Request header](https://developer.mozilla.org/en-US/docs/Glossary/Request%20header) |
|---|---|
| [Forbidden request header](https://developer.mozilla.org/en-US/docs/Glossary/Forbidden%20request%20header) | No |
Syntax
From: <email>
Directives
<email>- : A machine-usable email address.
Examples
From: webmaster@example.org
Specifications
SpecificationsStandards references are available on the canonical MDN page.
Browser compatibility
Browser compatibilityCompatibility data is available on the canonical MDN page.