Comment 3 for bug 191945

Code to handle Unicode email addresses can be found at http://stuartbishop.net/Software/EmailAddress/index.html

However, the last time I went over the RFC's the example email address is invalid, as the account name portion should be US-ASCII. This is because the character set used to encode the account name is undefined. Some systems assume LATIN-1 so things appear to be ok, at least until they attempt to communicate with a system that assumes something else (UTF-8, ASCII, system locale). If this is no longer correct and the RFCs have been updated then it should be trivial to update the linked code to cope.