Valid Email Addresses
A valid email address as of this form: local-part @ domain-part In particular, the local part is required to be one of the following: dot-atom quoted string a combination of the above. E.g. my.name.is."Johannes Kuah"@example.com Dot-Atom A string of ASCII characters excluding the following special characters : whitespace ( ) < > @ , ; : \ " . [ ] Quoted String A string of ASCII characters including the above special characters enclosed within normal ASCII quotation marks ("). However, the backslash \ and quotation mark " must also be preceded by a backslash \ References http://tools.ietf.org/html/rfc2822#section-3.4 http://tools.ietf.org/html/rfc3696#page-5