diff --git a/src/daemon/spawner.py b/src/daemon/spawner.py
index 524d87e..9eeb8dd 100644
--- a/src/daemon/spawner.py
+++ b/src/daemon/spawner.py
@@ -698,20 +698,38 @@ curl -X POST http://{api_host}:{api_port}/api/projects/{project_id}/tasks/{task_
         logger.info("Agent %s retry %s=%d/%d (session=%s)",
                     agent_id, retry_field, count, self.max_retries, session_id)
 
-        # 构建续杯 message
+        # 构建续杯 message（Mail 用专用模板，Task 用标准模板）
         task_info = self._get_task_info(db_path, task_id) or {}
-        fallback_hint = "\n⚠️ 之前有 fallback 执行，请调 API 检查任务当前状态和已有产出，确认是否已完成。" if retry_field == "retry_count" else ""
-        message = self.RETRY_PROMPT.format(
-            project_id=task_info.get("project_id", ""),
-            task_id=task_id or "",
-            title=task_info.get("title", ""),
-            retry_count=count,
-            max_retries=self.max_retries,
-            api_host=self.api_host,
-            api_port=self.api_port,
-            agent_id=agent_id,
-            fallback_hint=fallback_hint,
-        )
+        project_id = task_info.get("project_id", "")
+        is_mail = project_id == "_mail"
+
+        if is_mail:
+            # Mail 续杯：精简模板，不含状态转换指令
+            must_haves = task_info.get("must_haves", "{}")
+            try:
+                meta = json.loads(must_haves) if must_haves else {}
+            except Exception:
+                meta = {}
+            message = MAIL_RETRY_PROMPT.format(
+                from_agent=meta.get("from", "unknown"),
+                title=task_info.get("title", ""),
+                retry_count=count,
+                max_retries=self.max_retries,
+            )
+        else:
+            # Task 续杯：标准模板
+            fallback_hint = "\n⚠️ 之前有 fallback 执行，请调 API 检查任务当前状态和已有产出，确认是否已完成。" if retry_field == "retry_count" else ""
+            message = self.RETRY_PROMPT.format(
+                project_id=project_id,
+                task_id=task_id or "",
+                title=task_info.get("title", ""),
+                retry_count=count,
+                max_retries=self.max_retries,
+                api_host=self.api_host,
+                api_port=self.api_port,
+                agent_id=agent_id,
+                fallback_hint=fallback_hint,
+            )
 
         # 续杯 spawn（counter 保持占用，直到 max_retries 或最终完成时 release）
         # session 策略：原始是 main session (session_id=None) 时，retry 也用 main session