Terence – There is now an email service that offers and supports internationalized email addresses in 12 languages, including Chinese. See http://datamail.in or http://电邮.在线

This has all happened recently. I registered the Chinese email 小山@电邮.在线 with DataMail. I have successfully exchanged emails between my Chinese DataMail address and my ASCII gmail address. I have had this email address for less than 2 weeks.

Additional info at https://schappo.blogspot.co.uk/2017/01/chinese-email-address.html

André Schappo