Not really, according to the spec the '+' can be interpreted as part of the email address. The approach gmail takes seems to have gained widespread adoption, bu

Not really, according to the spec the '+' can be interpreted as part of the email address. The approach gmail takes seems to have gained widespread adoption, but it's not mandated by the spec. Believe I saw this on HN recently: http://haacked.com/archive/2007/08/21/i-knew-how-to-validate-an-email-address-until-i.aspx/ http://haacked.com/archive/2007/08/21/i-knew-how-to-validate...