From

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 header name No

Syntax

http
From: <email>

Directives

<email>

A machine-usable email address.

Examples

http
From: webmaster@example.org

Specifications

Specification
HTTP Semantics
# field.from

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
From

Legend

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Full support
Full support

See also