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
must be sent, so you can be contacted if problems occur on servers, such as if the
robot is 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|
A machine-usable email address.
|Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content (HTTP/1.1 Semantics and Content)|
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