zZzzZ. — /home/dfperez/public_html/wp-content/plugins/gosmtp-pro

Editing: gosmtp-pro.php

<?php
/*
Plugin Name: GoSMTP Pro
Plugin URI: https://gosmtp.net
Description: Send emails from your WordPress site using your preferred SMTP provider like Gmail, Outlook, AWS, Zoho, SMTP.com, Sendinblue, Mailgun, Postmark, Sendgrid, Sparkpost, Sendlayer or any custom SMTP provider.
Version: 1.1.1
Author: Softaculous Team
Author URI: https://softaculous.com
Text Domain: gosmtp
License: GPLv3 or later
License URI: https://www.gnu.org/licenses/gpl-3.0.html
*/

/*
* GoSMTP
* https://gosmtp.net
* (c) GoSMTP Team
*/

/*
GoSMTP's Mailer API connecters are derived from Fluent SMTP:
https://wordpress.org/plugins/fluent-smtp/
(C) FluentSMTP & WPManageNinja Team

FluentSMTP is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.	
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
*/

// We need the ABSPATH
if (!defined('ABSPATH')) exit;

if(!function_exists('add_action')){
	echo 'You are not allowed to access this page directly.';
	exit;
}

// If GOSMTP_VERSION exists then the plugin is loaded already !
if(defined('GOSMTP_PREMIUM')) {
	return;
}

define('GOSMTP_PRO_VERSION', '1.1.1');
define('GOSMTP_PRO_DIR', plugin_dir_path(__FILE__));
define('GOSMTP_API', 'https://api.gosmtp.net/');
define('GOSMTP_PRO_FILE', __FILE__);

include_once(GOSMTP_PRO_DIR.'functions.php');

$gosmtp_tmp_plugins = get_option('active_plugins', []);
$_go_version = get_option('gosmtp_version');

$go_req_free_update = !empty($_go_version) && version_compare($_go_version, '1.0.7', '<');

if(
	!defined('SITEPAD') && (
	!(in_array('gosmtp/gosmtp.php', $gosmtp_tmp_plugins) || 
	gosmtp_pro_is_network_active('gosmtp')) || 
	!file_exists(WP_PLUGIN_DIR . '/gosmtp/gosmtp.php') || 
	!empty($go_req_free_update) )
){
	include_once(GOSMTP_PRO_DIR .'/main/gosmtp-init.php');
	return;
}

define('GOSMTP_PREMIUM', plugin_basename(__FILE__));
include_once(dirname(__FILE__).'/init.php');