From 5882e9745eed09d8f7a0b47917134f4567e3dbbd Mon Sep 17 00:00:00 2001
From: Lars Gebhardt-Kusche <lars@kusche.berlin>
Date: Tue, 24 Feb 2026 02:09:12 +0100
Subject: [PATCH] fer

---
 src/ApiKernel.php | 39 ++++++++++++++++++++++++---------------
 1 file changed, 24 insertions(+), 15 deletions(-)

diff --git a/src/ApiKernel.php b/src/ApiKernel.php
index 7b2a276..5ef6fc3 100755
--- a/src/ApiKernel.php
+++ b/src/ApiKernel.php
@@ -2357,7 +2357,11 @@ class ApiKernel
                 'html_length' => strlen($html),
                 'mail_error' => $this->lastMailError,
             ]);
-            $this->fail('Send failed', null, 500);
+            $detail = null;
+            if ($this->isStagingEnv()) {
+                $detail = ['mail_error' => $this->lastMailError];
+            }
+            $this->fail('Send failed', $detail, 500);
         }
 
         if ($customerId > 0) {
@@ -5816,20 +5820,8 @@ SQL;
 
     private function writeDebugLog(string $name, array $payload): void
     {
-        $env = strtolower((string)($this->conf['env'] ?? ''));
-        if ($env !== 'staging' && (!defined('APP_ENV') || strtolower((string)APP_ENV) !== 'staging')) {
-            $host = '';
-            if (!empty($_SERVER['HTTP_X_FORWARDED_HOST'])) {
-                $host = strtolower(trim(explode(',', (string)$_SERVER['HTTP_X_FORWARDED_HOST'])[0]));
-            } elseif (!empty($_SERVER['HTTP_HOST'])) {
-                $host = strtolower((string)$_SERVER['HTTP_HOST']);
-            }
-            if ($host !== '') {
-                $host = preg_replace('/:\\d+$/', '', $host);
-            }
-            if ($host !== 'staging.emailtemplate.it') {
-                return;
-            }
+        if (!$this->isStagingEnv()) {
+            return;
         }
         $dir = $this->debugDir();
         debug_log_write($name, $payload, [
@@ -5840,6 +5832,23 @@ SQL;
         ]);
     }
 
+    private function isStagingEnv(): bool
+    {
+        $env = strtolower((string)($this->conf['env'] ?? ''));
+        if ($env === 'staging') return true;
+        if (defined('APP_ENV') && strtolower((string)APP_ENV) === 'staging') return true;
+        $host = '';
+        if (!empty($_SERVER['HTTP_X_FORWARDED_HOST'])) {
+            $host = strtolower(trim(explode(',', (string)$_SERVER['HTTP_X_FORWARDED_HOST'])[0]));
+        } elseif (!empty($_SERVER['HTTP_HOST'])) {
+            $host = strtolower((string)$_SERVER['HTTP_HOST']);
+        }
+        if ($host !== '') {
+            $host = preg_replace('/:\\d+$/', '', $host);
+        }
+        return $host === 'staging.emailtemplate.it';
+    }
+
     private function defaultApiBase(): string
     {
         $base = $this->conf['base_url'] ?? '';