email block and unblock button easily seen/findable on email page
email bloc/unblock button on email home page
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The best way to get rid of spam is to mark these emails as spam! This will help the spam filters. So please don't just delete the emails. We also recommend unsubscribing from these emails. If you'd like to block domains, you'll need to upgrade to Yahoo Mail Plus, but we can't stress enough the best way to get rid of spam is marking it as spam. Hope this helps!