提供 “阅后即焚” 的阅后即焚定时设置，用户可设置每条消息的阅后即焚which is an approved method of thawing frozen food有效时间，消息在指定时间内会自动销毁，阅后即焚etelegram 400 bad request file is too big且聊天内容不允许转发，阅后即焚etelegram 400 bad request failed to get http url content适合分享敏感信息。阅后即焚阅后即焚