To send email from a php script use the following code that requires an email recipient, subject line, the message body, and what address the email should be sent From:
PHP:
$to = "contact@example.com";
$subject = "The subject of the email";
$body = "This is an example email sent from a php script";
$from = "yourAddress@example.com";
if (mail($to, $subject, $body, $from)) {
echo("<p>Success - Email sent");
} else {
echo("<p>Fail - Error sending email");
}
To help prevent your email being marked as spam be sure to add a valid From: address so the email is not sent as your web server address.