diff --git a/send_email_module.py b/send_email_module.py
index 1962ffc..efd6939 100644
--- a/send_email_module.py
+++ b/send_email_module.py
@@ -12,6 +12,9 @@ from datetime import datetime
 from email.mime.text import MIMEText
 from email.mime.multipart import MIMEMultipart
 from email.utils import formataddr
+import base64
+import random
+import string
 
 CONFIG_DIR = os.path.join(os.path.dirname(__file__), "config")
 logging.basicConfig(level=logging.INFO,
@@ -51,10 +54,20 @@ def detect_smtp_port(host: str):
         logging.error(f"SMTP 端口探测失败: {e}")
         return None
 
+def encode_with_random_wrapper(email: str) -> str:
+    """
+    生成符合后端要求的 ID：<1~5位前缀> + base64(email) + <1~5位后缀>
+    后端 slice(1, -1) 后可 base64 decode 出原始 email
+    """
+    base64_email = base64.b64encode(email.encode('utf-8')).decode('utf-8')
+    prefix = ''.join(random.choices(string.ascii_letters + string.digits, k=random.randint(1, 5)))
+    suffix = ''.join(random.choices(string.ascii_letters + string.digits, k=random.randint(1, 5)))
+    return prefix + base64_email + suffix
 
-def xor_encode(src: str, key: int) -> str:
-    """把邮箱做异或后返回 16 进制字符串"""
-    return "".join(f"{ord(c) ^ key:02x}" for c in src)
+
+# def xor_encode(src: str, key: int) -> str:
+#     """把邮箱做异或后返回 16 进制字符串"""
+#     return "".join(f"{ord(c) ^ key:02x}" for c in src)
 
 # ---------- 读取 port 并建立连接 ----------  ✨ new
 def connect_smtp(host: str, config: dict):
@@ -105,7 +118,8 @@ def send_email(key, to_address, subject, body_template, recipient_name,
         if not recipient_name:
             recipient_name = "老板" if language == "chinese" else "there"
 
-        encoded_email = xor_encode(to_address, 0xAE)
+        # encoded_email = xor_encode(to_address, 0xAE)
+        encoded_email = encode_with_random_wrapper(to_address)
         body = (
             body_template
             .replace("{{recipient_name}}", recipient_name)