diff --git a/src/services/tempmail.py b/src/services/tempmail.py
index e5d0f2b9..ecdf6e84 100644
--- a/src/services/tempmail.py
+++ b/src/services/tempmail.py
@@ -7,6 +7,7 @@
 import logging
 from typing import Optional, Dict, Any, List
 import json
+import os
 
 from curl_cffi import requests as cffi_requests
 
@@ -48,6 +49,12 @@ def __init__(self, config: Dict[str, Any] = None, name: str = None):
 
         self.config = {**default_config, **(config or {})}
 
+        # ←←← 最终优化：API Key 完全可选（付费/免费自动切换）↓↓↓
+        self.api_key = self.config.get("api_key") or os.getenv("TEMPMail_API_KEY")
+        if self.api_key:
+            logger.info(f"✅ Tempmail.lol Plus/Ultra 已加载 API Key: {self.api_key[:30]}...")
+        # 没 Key 时不打印任何警告，直接走免费模式（符合你的需求）
+
         # 创建 HTTP 客户端
         http_config = RequestConfig(
             timeout=self.config["timeout"],
@@ -83,6 +90,7 @@ def create_email(self, config: Dict[str, Any] = None) -> Dict[str, Any]:
                 headers={
                     "Accept": "application/json",
                     "Content-Type": "application/json",
+                    **({"Authorization": f"Bearer {self.api_key}"} if self.api_key else {}),
                 },
                 json={}
             )
@@ -163,7 +171,10 @@ def get_verification_code(
                 response = self.http_client.get(
                     f"{self.config['base_url']}/inbox",
                     params={"token": token},
-                    headers={"Accept": "application/json"}
+                    headers={
+                        "Accept": "application/json",
+                        **({"Authorization": f"Bearer {self.api_key}"} if self.api_key else {}),
+                    }
                 )
 
                 if response.status_code != 200: