PHP mail is sent very late?

This is my code “

if ($_SERVER[“REQUEST_METHOD] == “POST” && isset($_POST[’email’]) && isset($_POST[‘subject’]) && isset($_POST[‘html_content’])

$to_email = $_POST[’email’);

$subject = $_POST[‘subject’);

$html_content = $_POST[‘html_content’);

// Configuration for mail delivery

$from_email = ‘deine@ Exemplar-email.com’;

// Set mail header

$headers = “From: $from_email\r\n”;

$headers .= “Reply-To: $from_email\r\n”;

$headers .= “Content-type: text/html; charset=UTF-8\r\n”;

// Send e-mail

$mail_sent = mail($to_email, $subject, $html_content, $headers);

if ($mail_sent) {

echo “The newsletter was successfully sent to $to_email!”;

} else

echo “There was a problem sending the newsletter to $to_email.”;

}

} else

echo “Not all required fields have been transmitted.”

}

?>

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