discourse/app/jobs/scheduled/clean_up_email_logs.rb

module Jobs

  class CleanUpEmailLogs < Jobs::Scheduled
    every 1.day

    def execute(args)
      return if SiteSetting.delete_email_logs_after_days <= 0

      threshold = SiteSetting.delete_email_logs_after_days.days.ago

      EmailLog.where(reply_key: nil)
              .where("created_at < ?", threshold)
              .delete_all
    end

  end

end