diff --git a/Classes/Utility/ConfigurationUtility.php b/Classes/Utility/ConfigurationUtility.php
index bb3b040..261dcc4 100644
--- a/Classes/Utility/ConfigurationUtility.php
+++ b/Classes/Utility/ConfigurationUtility.php
@@ -5,6 +5,9 @@
 namespace Pluswerk\MailLogger\Utility;
 
 use Exception;
+use ReflectionException;
+use ReflectionMethod;
+use RuntimeException;
 use TYPO3\CMS\Core\TypoScript\TypoScriptService;
 use TYPO3\CMS\Core\Utility\GeneralUtility;
 use TYPO3\CMS\Extbase\Configuration\BackendConfigurationManager;
@@ -14,23 +17,49 @@ class ConfigurationUtility
     /** @var array<array-key, mixed> */
     protected static array $currentModuleConfiguration = [];
 
+    public function __construct(
+        private readonly BackendConfigurationManager $backendConfigurationManager,
+        private readonly TypoScriptService $typoScriptService
+    ) {
+    }
+
     /**
      * @return array<array-key, mixed>
+     * @throws ReflectionException
      */
     public static function getCurrentModuleConfiguration(string $key): array
+    {
+        return GeneralUtility::makeInstance(self::class)->getConfiguration($key);
+    }
+
+    /**
+     * @return array<array-key, mixed>
+     * @throws ReflectionException
+     */
+    public function getConfiguration(string $key): array
     {
         if (!self::$currentModuleConfiguration) {
-            // we always use the BackendConfigurationManager, because flux is overwriting the ConfigurationManager and always uses the FrontendConfigurationManager instead of the correct one for the current context
-            $request = $GLOBALS['TYPO3_REQUEST'] ?? throw new Exception('No $GLOBALS[\'TYPO3_REQUEST\'] found', 1688138054);
-            $fullTypoScript = GeneralUtility::makeInstance(BackendConfigurationManager::class)->getTypoScriptSetup($request);
+            // we always use the BackendConfigurationManager, because flux is overwriting the ConfigurationManager
+            // and always uses the FrontendConfigurationManager instead of the correct one for the current context
 
-            $typoScriptService = GeneralUtility::makeInstance(TypoScriptService::class);
+            // TYPO3 v13 requires $request parameter, v12 does not accept it
+            $reflection = new ReflectionMethod($this->backendConfigurationManager, 'getTypoScriptSetup');
+            if ($reflection->getNumberOfParameters() > 0) {
+                // v13: pass request parameter
+                $request = $GLOBALS['TYPO3_REQUEST'] ?? throw new Exception('No $GLOBALS[\'TYPO3_REQUEST\'] found', 1688138054);
+                /** @phpstan-ignore-next-line arguments.count - v13 compatibility */
+                $fullTypoScript = $this->backendConfigurationManager->getTypoScriptSetup($request);
+            } else {
+                // v12: no parameters
+                /** @phpstan-ignore-next-line arguments.count - v12 compatibility */
+                $fullTypoScript = $this->backendConfigurationManager->getTypoScriptSetup();
+            }
 
             if (empty($fullTypoScript['module.']['tx_maillogger.'])) {
-                throw new Exception('Constants and setup TypoScript are not included!', 7780827935);
+                throw new RuntimeException('Constants and setup TypoScript are not included!', 7780827935);
             }
 
-            self::$currentModuleConfiguration = $typoScriptService->convertTypoScriptArrayToPlainArray($fullTypoScript['module.']['tx_maillogger.']);
+            self::$currentModuleConfiguration = $this->typoScriptService->convertTypoScriptArrayToPlainArray($fullTypoScript['module.']['tx_maillogger.']);
         }
 
         return self::$currentModuleConfiguration[$key];