/**
 * Get the users based on groups from the User Access Manager plugin
 * $meta_filter can be '', MAILUSERS_ACCEPT_NOTIFICATION_USER_META, or MAILUSERS_ACCEPT_MASS_EMAIL_USER_META
 */
function mailusers_get_uam_groups($exclude_id = '', $meta_filter = '')
{
    global $wpdb;
    $uam = array();
    $groups = $wpdb->get_results("\n        SELECT DISTINCT a.id, a.groupname FROM {$wpdb->prefix}uam_accessgroups a\n\t\tINNER JOIN {$wpdb->prefix}uam_accessgroup_to_object b ON a.id = b.group_id\n\t\tWHERE b.object_type != 'role' ");
    foreach ($groups as $group) {
        $ids = mailusers_get_recipients_from_uam_group($group->id, $exclude_id, $meta_filter);
        if (!empty($ids)) {
            $uam[$group->id] = $group->groupname;
        }
    }
    return $uam;
}
                break;
            default:
                $send_roles[] = $value;
                break;
        }
    }
    //  Extract the recipinents from the various target sources
    $recipients = array();
    if (!empty($send_filters)) {
        $recipients = array_merge($recipients, mailusers_get_recipients_from_custom_meta_filters($send_filters, $exclude_id, MAILUSERS_ACCEPT_MASS_EMAIL_USER_META));
    }
    if (class_exists(MAILUSERS_USER_GROUPS_CLASS) && !empty($send_ug)) {
        $recipients = array_merge($recipients, mailusers_get_recipients_from_user_groups($send_ug, $exclude_id, MAILUSERS_ACCEPT_MASS_EMAIL_USER_META));
    }
    if (class_exists(MAILUSERS_USER_ACCESS_MANAGER_CLASS) && !empty($send_uam)) {
        $recipients = array_merge($recipients, mailusers_get_recipients_from_uam_group($send_uam, $exclude_id, MAILUSERS_ACCEPT_MASS_EMAIL_USER_META));
    }
    if (class_exists(MAILUSERS_ITTHINX_GROUPS_CLASS) && !empty($send_groups)) {
        $recipients = array_merge($recipients, mailusers_get_recipients_from_itthinx_groups_group($send_groups, $exclude_id, MAILUSERS_ACCEPT_MASS_EMAIL_USER_META));
    }
    if (class_exists(MAILUSERS_PMPRO_CLASS) && !empty($send_pmpro)) {
        $recipients = array_merge($recipients, mailusers_get_recipients_from_membership_levels($send_pmpro, $exclude_id, MAILUSERS_ACCEPT_MASS_EMAIL_USER_META));
    }
    if (!empty($send_roles)) {
        $recipients = array_merge($recipients, mailusers_get_recipients_from_roles($send_roles, $exclude_id, MAILUSERS_ACCEPT_MASS_EMAIL_USER_META));
    }
    if (empty($recipients)) {
        ?>
			<p><strong><?php 
        _e('No recipients were found.', MAILUSERS_I18N_DOMAIN);
        ?>