Add check to avoid db operation if email logging option is disabled

readme.txt

@@ -3,7 +3,7 @@ Contributors: sparkpost, rajuru
 Tags: sparkpost, smtp, wp_mail, mail, email
 Requires at least: 4.3
 Tested up to: 4.9.4
-Stable tag: 3.1.0
+Stable tag: 3.1.1
 License: GPLv2 or later
 
 Send all your email from WordPress through SparkPost, the most advanced email delivery service.
@@ -51,6 +51,9 @@ Visit plugin's [official issue tracker](https://github.com/SparkPost/wordpress-s
 
 
 == Changelog ==
+= 3.1.1 =
+- Avoid db checking if email logging is not enabled
+
 = 3.1.0 =
 - Improved UI
 - (Optional) Email logging support for better debugging

sparkpost.class.php

@@ -85,6 +85,13 @@ protected function install_db()
 
     function db_update_check()
     {
+        //no need to check db version if email logging is not enabled
+        $mailer = self::get_setting('sending_method');
+        $email_logging_enabled = self::get_setting('log_emails');
+        if($mailer != 'api' ||  !$email_logging_enabled) {
+          return false;
+        }
+
         if (get_site_option('sp_db_version') != $this->db_version) {
             return $this->install_db();
         }

wordpress-sparkpost.php

@@ -5,7 +5,7 @@
 Plugin Name: SparkPost
 Plugin URI: http://sparkpost.com/
 Description: Send all your email from Wordpress through SparkPost, the world's most advanced email delivery service.
-Version: 3.1.0
+Version: 3.1.1
 Author: SparkPost
 Author URI: http://sparkpost.com
 License: GPLv2 or later
@@ -18,7 +18,7 @@
 
 define('WPSP_PLUGIN_DIR', plugin_dir_path(__FILE__));
 define('WPSP_PLUGIN_PATH', WPSP_PLUGIN_DIR . basename(__FILE__));
-define('WPSP_PLUGIN_VERSION', '3.1.0');
+define('WPSP_PLUGIN_VERSION', '3.1.1');
 
 require_once(WPSP_PLUGIN_DIR . 'sparkpost.class.php');