How can I edit this code to limit a function?

Hi guys,

I've got this code within a script. It emails the users when I publish their story on my website (and it also emails the person whom the story is about)

However, if I edit the story and save they get repeat emails... How can I get this to only send one email (the very first time the story is approved and saved)?

		if ($table->save($_POST)){
			$story_id = $_POST['id'];

			if ($_POST['published'] == 1) {
				
				$query = "SELECT u.name, u.email"
					. "\n FROM #__users AS u"
					. "\n LEFT JOIN #__vst_stories AS s ON u.id = s.user_id"
					. "\n WHERE s.id = $story_id";
				$database->setQuery($query);
				$database->loadObject(&$row);				
				
				$query = "SELECT *"
					. "\n FROM #__vst_mail_templates"
					. "\n WHERE id = 14";
				$database->setQuery($query);
				$database->loadObject(&$obj);
				$body = str_replace('[NAME]', $row->name, $obj->body);
				mosMail($mosConfig_mailfrom, $mosConfig_fromname, $row->email, $obj->subject, $body, true);
			}

Code (markup):

Thanks for your help, RJP1

 

Remark

mosMail....

to //mosMail.... but i don't know if this affects all options, please give more code!