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The From request header contains an Internet email address for a human user who controls the requesting user agent.
If you are running a robotic user agent (e.g. a crawler), the From header should be sent, so you can be contacted if problems occur on servers, such as if the robot is sending excessive, unwanted, or invalid requests.
You shouldn't use the From header for access control or authentication.
| Header type | Request header |
|---|---|
| Forbidden header name | no |
Syntax
From: <email>
Directives
- <email>
- A machine-usable email address.
Examples
From: webmaster@example.org
Specifications
| Specification | Title |
|---|---|
| RFC 7231, section 5.5.1: From | Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content |
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
| Desktop | Mobile | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
| Basic support | Chrome Full support Yes | Edge Full support Yes | Firefox Full support Yes | IE Full support Yes | Opera Full support Yes | Safari Full support Yes | WebView Android Full support Yes | Chrome Android Full support Yes | Edge Mobile Full support Yes | Firefox Android Full support Yes | Opera Android Full support Yes | Safari iOS Full support Yes | Samsung Internet Android Full support Yes |
Legend
- Full support
- Full support