akismet integration

db/migrate/20170914200122_add_is_spam_to_dmails.rb

@@ -0,0 +1,7 @@
+class AddIsSpamToDmails < ActiveRecord::Migration
+  def change
+  	Dmail.without_timeout do
+	    add_column :dmails, :is_spam, :boolean, default: false
+	  end
+  end
+end