How to send a private message Contributors

u want automatically send message after review and published?

function fep_publish_message($post_id) {
	global $wpdb;
        $post = get_post($post_id);
        $author = get_userdata($post->post_author);
        $author_id = $author->ID;

		$from = 1;  //change with your admin id
		$title = 'SUBJECT';  //change message title
		$content = 'MESSAGE';  //change message content
		$date = current_time('mysql');
		$table = $wpdb->prefix."fep_messages";

		$wpdb->query($wpdb->prepare("INSERT INTO $table (from_user, to_user, message_title, message_contents, last_sender, date, last_date) VALUES ( %d, %d, %s, %s, %d, %s, %s )", $from, $author_id, $title, $content, $from, $date, $date));
		}
		add_action( 'pending_to_publish', 'fep_publish_message' );

You can find lots of functions like this if you search in wordpress.org or google. If you find any difficulty u can contact with me anytime.
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