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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def send_email(self):
 """ send email notification according to user settings """

        # send only if user notification setting is set to true
        if self.check_user_settings():
            send_mail(_(self.type), self.email_message, settings.DEFAULT_FROM_EMAIL, [self.to_user.email])
            return True
        else:
            # return false otherwise
            return False