Regular expression for email and 'No Email'

Need regular expression to validate email address also if user don't have email, user able to type 'No Email'. such that regular expression should validate 'No Email' as a valid string.

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 @"^(([w.-]+)@([w-]+)((.(w){2,3})+)|(No Email))$"

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You can combine your regex with an or expression |

var regex = "(.+@.+..+|No Email)"

http://refiddle.com/h2x

The validation part need some improvement (not RFC compliant) but you get the idea.

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