Simple change to the OptinMonster default priority for inline optins.

om-inline-prioritizer.php

<?php
/**
 * Plugin Name: OM Inline Prioritizer
 * Version: 1.0
 * Description: Simple change to the OptinMonster default priority for inline optins.
 * Author: Devin Vinson
 * Author URI: http://optinmonster.com
 * Text Domain: om-inline-prioritizer
 * Domain Path: /languages
 * @package om-inline-prioritizer
 */


/**
 * Modify the priority that OM outputs inline optins.
 *
 * Since Jetpack filters the_content at 20, we'll filter
 * at 19 to come first. Modify as needed
 *
 * @return int
 */
function omip_move_inline_priority() {

    return 19;

}

add_filter('optin_monster_api_post_priority','omip_move_inline_priority');