Headers: From
From header
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
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 From header for access control or authentication.
| Header type | Request header |
|---|---|
| Forbidden request header | No |
Syntax
From: <email>
Directives
<email>-
A machine-usable email address.
Examples
From: webmaster@example.org
Specifications
| Specification |
|---|
| HTTP Semantics> # field.from> |
Browser compatibility
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
From |
1 | 12 | 1 | 15 | 1 | 18 | 4 | 14 | 1 | 1.0 | 4.4 | 1 |
See also
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/From
