在模版消息发送任务完成后，微信服务器会将是否送达成功作为通知https://developers.weixin.qq.com/doc/offiaccount/Message_Management/Template_Message_Interface.htmlhttps://developers.weixin.qq.com/doc/offiaccount/Message_Management/Template_Message_Interface.htmlhttps://developers.weixin.qq.com/doc/offiaccount/Message_Management/Template_Message_Interface.html
发送完应该会有返回是否成功