Best way to eliminate most spam is to install www.spamfighter.com, it is free and works quite well with very little training to sort out the good from the bad. And yes you cam block items from opening and add the automatically to "blacklist".

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I am using the free version of SPAMfighter for private users.
It has removed 60 spam emails to date.
Paying users do not have this message in their emails.
Try SPAMfighter for free now!