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 |
From: <email><email>A machine-usable email address.
From: webmaster@example.org