def perform(campaign)
      campaign.apply_premailer
      campaign.list.subscriptions.availables.each do |s|
        campaign.push_notification(s)
      end
    end
def perform(campaign)
      campaign.apply_premailer
      campaign.list.subscriptions.availables.each do |s|
        campaign.push_notification(s)
      end
    end
send to all list with state passive & subscribed