Per DNN - Google will support non-Latin characters and accented characters. Non-Latin characters will now work with email addresses when using Gmail. Gmail has added support for internationalized domain names in email addresses, in what is certainly big news for the more than half of the world that uses a non-Latin alphabet. That means that addresses ending in شبكة. (dot Shabaka) should now work. (I’m assuming Gmail handles all IDNs, including right-to-left.) That also goes for addresses with accented characters (e.g. Ramón).