Login to the Current Version The most powerful and easiest way to use Marketing Optimizer. Marketing Optimizer v6 customers sign in here. Login to the Legacy Interface If you became a client prior to September 1st, 2019 and have not yet migrated to v6. Marketing Optimizer v5 customers Sign in here. Don’t have an account? See for yourself how easy it is to integrate call tracking and marketing automation. Click here to get a demo and start optimizing your marketing today.