core.php

if(!function_exists( 'optimizer_send_message' ) ){
	function optimizer_send_message($to) {

			if (isset($_POST['contact_message'])) {
				add_filter('wp_mail_content_type', 'optimizer_contact_mail_type' );
				$to = optimizer_contact_widget_email();
				$to = explode(",",$to);

				$subject = get_bloginfo('name')." | ". esc_html($_POST['contact_subject']);
				if (isset($_POST['contact_extra'])) {$extra_field = ' / '.esc_html($_POST['contact_extra']); }else{$extra_field = '';}


				ob_start();
					echo '<p style="border-bottom: 1px solid #DADADA;padding-bottom: 15px;"><b>From:</b> '.esc_html($_POST['contact_name']).' / '.sanitize_email($_POST['contact_email']).''.$extra_field.' <br></p>';
					echo wp_kses(wpautop($_POST['contact_message']));

					$message = ob_get_contents();

				ob_end_clean();

				//$mail = wp_mail($to, $subject, $message, $headers);
				foreach($to as $email_address)
				{
					$headers = "From: ".sanitize_email($email_address)." <".sanitize_email($email_address).">\r\nReply-To:".sanitize_email($_POST['contact_email']);
					wp_mail($email_address, $subject, $message, $headers);
				}
				//if($mail){
					echo 'success';
				//}
				remove_filter('wp_mail_content_type', 'optimizer_contact_mail_type' );
			}

			exit();

	}
}