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files/en-us/web/http/reference/headers/from/index.md

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The HTTP From {{Glossary("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.

<table class="properties"> <tbody> <tr> <th scope="row">Header type</th> <td>{{Glossary("Request header")}}</td> </tr> <tr> <th scope="row">{{Glossary("Forbidden request header")}}</th> <td>No</td> </tr> </tbody> </table>

Syntax

http
From: <email>

Directives

  • <email>
    • : A machine-usable email address.

Examples

http
From: [email protected]

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

  • {{HTTPHeader("Host")}}