Google Optimize is a free website optimization tool that helps online marketers increase visitor conversion rates and overall visitor satisfaction by continually A/B testing different combinations of website content.
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.
MailChimp list management features help users organize and target their list for sending. They automatically remove bounce backs and unsubscribes from their list.
Wix is a website building & publishing platform which helps users create professional websites exactly the way they want, with a drag & drop website editor.