diff --git a/composer.json b/composer.json
index 618b1eb..cce3d6c 100644
--- a/composer.json
+++ b/composer.json
@@ -15,7 +15,7 @@
         }
     ],
     "require": {
-        "php": "~7.4.0 || ~8.0.0",
+        "php": "~7.4.0 || ^8.0",
         "composer-runtime-api": "^2.2"
     },
     "require-dev": {
diff --git a/src/ModuleLoader.php b/src/ModuleLoader.php
index 098bcef..05e1271 100644
--- a/src/ModuleLoader.php
+++ b/src/ModuleLoader.php
@@ -6,6 +6,7 @@
 
 use RuntimeException;
 use SzepeViktor\TestMode\Modules\Module;
+use SzepeViktor\TestMode\ThirdPartyModules as ThirdParties;
 
 use function apply_filters;
 
@@ -37,12 +38,29 @@ static function (string $fqcn): bool {
         );
     }
 
+    /**
+     * @return list<class-string>
+     */
+    public static function getThirdParties(): array
+    {
+        $modules = [];
+
+        if (class_exists(\MakeCommerce::class)) {
+            $modules[] = ThirdParties\MakeCommerce::class;
+        }
+
+        return $modules;
+    }
+
     /**
      * @return list<class-string>
      */
     public static function getAll(): array
     {
-        $modules = apply_filters('szepeviktor/test-mode/modules', self::getBuiltins());
+        $modules = apply_filters(
+            'szepeviktor/test-mode/modules',
+            array_merge(self::getBuiltins(), self::getThirdParties())
+        );
 
         return array_filter(
             $modules,
diff --git a/src/Plugin.php b/src/Plugin.php
index 0641611..96cb43b 100644
--- a/src/Plugin.php
+++ b/src/Plugin.php
@@ -34,7 +34,7 @@ public static function loadTextDomain()
     {
         /** @var string */
         $pluginBasename = Config::get('baseName');
-        load_plugin_textdomain('plugin-slug', false, sprintf('%s/%s', dirname($pluginBasename), 'languages'));
+        load_plugin_textdomain('szv-test-mode', false, sprintf('%s/%s', dirname($pluginBasename), 'languages'));
     }
 
     /**
@@ -77,10 +77,10 @@ public static function printRequirementsNotice()
 
         printf(
             '<div class="notice notice-error"><p>%1$s <a href="%2$s" target="_blank">%3$s</a> %4$s</p></div>',
-            esc_html__('Plugin Name activation failed! Please read', 'plugin-slug'),
+            esc_html__('Plugin Name activation failed! Please read', 'szv-test-mode'),
             esc_url('https://github.com/szepeviktor/starter-plugin#installation'),
-            esc_html__('the Installation instructions', 'plugin-slug'),
-            esc_html__('for list of requirements.', 'plugin-slug')
+            esc_html__('the Installation instructions', 'szv-test-mode'),
+            esc_html__('for list of requirements.', 'szv-test-mode')
         );
     }
 
diff --git a/src/ThirdPartyModules/MakeCommerce.php b/src/ThirdPartyModules/MakeCommerce.php
new file mode 100644
index 0000000..c094074
--- /dev/null
+++ b/src/ThirdPartyModules/MakeCommerce.php
@@ -0,0 +1,45 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SzepeViktor\TestMode\ThirdPartyModules;
+
+use SzepeViktor\TestMode\Modules\BaseModule;
+use SzepeViktor\TestMode\Modules\Module;
+
+use function add_filter;
+
+class MakeCommerce extends BaseModule implements Module
+{
+    public function getName(): string
+    {
+        return 'MakeCommerce payment gateway';
+    }
+
+    public function getLabel(): string
+    {
+        return 'Use sandbox, or do not start at all.';
+    }
+
+    public function testmode(): void
+    {
+        add_filter(
+            'pre_option_'.'mc_api_mode',
+            static function () {
+                return 'test';
+            },
+            PHP_INT_MAX,
+            0
+        );
+    }
+
+    public function disabled(): void
+    {
+        add_filter(
+            'pre_option_'.'mc_api_mode',
+            '__return_null',
+            PHP_INT_MAX,
+            0
+        );
+    }
+}