Email Address Internationalization: 例子@例子.中国

For 30 years, Internet email addresses have used the format user@example.com, with the character set A-Z, 0-9, and -. Gradually mail has been extended to support bæ and löffel in most places, but not in addresses. Now Email Address Internationalization (EAI) work has added support for unicode in addresses, simplifying syntax simultaneously.