Add ScreenedUrl. Rename BlockedEmail to ScreenedEmail.

app/serializers/screened_email_serializer.rb

@@ -0,0 +1,11 @@
+class ScreenedEmailSerializer < ApplicationSerializer
+  attributes :email,
+             :action,
+             :match_count,
+             :last_match_at,
+             :created_at
+
+  def action
+    ScreenedEmail.actions.key(object.action_type).to_s
+  end
+end