How can PHP developers ensure that the email sender information is correctly set when using the mail() function?

When using the mail() function in PHP to send emails, developers can ensure that the email sender information is correctly set by including the additional headers parameter with the "From" address specified. This ensures that the email client displays the sender information as intended. 

$to = "recipient@example.com";
$subject = "Test Email";
$message = "This is a test email.";
$headers = "From: sender@example.com";

mail($to, $subject, $message, $headers);

Keywords

PHP mail() function email sender headers validation

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