This tends to seem different for everybody dependant upon the channels you might be leveraging and also your stop target. You may measure e mail open rates, new Fb likes, or product pre-orders. You may as well observe a combination of quite a few handy metrics. Salesforce’s “Top via Transform” https://trentonwzbgf.wikiexpression.com/3335985/new_step_by_step_map_for_easy_signup