code: def sendUserLeft(self, context={}):
      
      self.__init__(context['organization'], async_mail=self.async_mail, override_receiver=context['user'].email, locale=context['user'].locale)
      self.sendEmail('userLeft-toUser', 'You have left an organization', context)
  
      self.__init__(context['organization'], async_mail=self.async_mail, override_receiver=context['organization'].owner.email, locale=context['organization'].owner.locale)
      self.sendEmail('userLeft-toOwner', 'An user has left an organization you own', context)
docs: Sent when user leaves organization