Send all email on QA/Staging to alternate address

action_mailer.rb

# add to config/initializers
if hostname =~ /qa/ || Rails.env.staging?
  class OverrideMailRecipient
    def self.delivering_email(mail)
      mail.to = "[email protected]"
    end
  end
  ActionMailer::Base.register_interceptor(OverrideMailRecipient)
end