Google AdWords lets create ads that appear in Google search results for certain keywords in certain regions, driving more qualified traffic to their website.
MailChimp gives you all the power of enterprise-level automation without any of the headaches. Provide timely, relevant information with MailChimp Workflows.
Gmail is a free, advertising-supported email service offered as part of Google's G Suite, with 15GB of storage, color-coded inbox filters and unsend button.