Melody

if instead of only deleting the spam emails, you use the BLACKLIST & BOUNCE features....the blacklist blocks them for future and the bounce send them an email saying your email addy cannot be accessed for delivery

both blocking and bouncing PREVENT those people from future spamming you, something just deleting doesnt do

also

on mailwasher at the top right you have a little box saying "show headers" when you want to look at an email Iyou view them in maiwasher by double clicking on the subject)

anyway, sometimes people send phising or masked emails pretending to be from say eBay or a bank...with the show headers feature, you can see where the emails truly originate from