How can PHP form mailers be configured to ensure the sender's email address is accurately reflected in the email?

When using PHP form mailers, it is important to ensure that the sender's email address is accurately reflected in the email. This can be achieved by setting the "From" header in the PHP mail function to the sender's email address. By doing this, the email recipient will see the sender's email address in the email client.

$to = "recipient@example.com";
$subject = "Subject of the email";
$message = "This is the message body of the email";

$headers = "From: sender@example.com\r\n";

// Send email
mail($to, $subject, $message, $headers);