Re:Show HN: NBox – Sign up anywhere without giving your emai...
by ballenf on Tuesday June 20, 2017 @04:27PM
(#14598292)
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...