https://blog.wongcw.com/2020/07/07/%e7%94%a8%e5%a5%bdsmart-reply-compose%e5%8a%9f%e8%83%bd%e5%a4%a7%e5%b9%85%e6%8f%90%e5%8d%87gmail%e5%b7%a5%e4%bd%9c%e6%95%88%e7%8e%87/