Swift String Extension to validate emails conforming RFC 5322 Internet Message format

EmailValidatorStringExtension.swift

extension String {

  //Regex fulfill RFC 5322 Internet Message format
  func isEmailFormatted() -> Bool {
    let predicate = NSPredicate(format: "SELF MATCHES %@", "[A-Za-z0-9!#$%&'*+/=?^_`{|}~-]+(\\.[A-Za-z0-9!#$%&'*+/=?^_`{|}~-]+)*@([A-Za-z0-9]([A-Za-z0-9-]*[A-Za-z0-9])?\\.)+[A-Za-z0-9]([A-Za-z0-9-]*[A-Za-z0-9])?")
    return predicate.evaluate(with: self)
  }
}