code: def send_confirmation_instructions(user):
      
  
      confirmation_link, token = generate_confirmation_link(user)
  
      _security.send_mail(config_value('EMAIL_SUBJECT_CONFIRM'), user.email,
                          'confirmation_instructions', user=user,
                          confirmation_link=confirmation_link)
  
      confirm_instructions_sent.send(app._get_current_object(), user=user,
                                     token=token)
docs: Sends the confirmation instructions email for the specified user.
  
      :param user: The user to send the instructions to