If it's gmail, go to GMail, find a spam message, click More, click Filter messages like these, set up the filtering-subject, sender, whatever you want to filter on, click on Create filter with this search, check the Delete box, check the Also apply box and click Create filter.f it's gmail, go to GMail, find a spam message, click More, click Filter messages like these, set up the filtering-subject, sender, whatever you want to filter on, click on Create filter with this search, check the Delete box, check the Also apply box and click Create filter.