Do you want to be able to track your WordPress users as they subscribe and unsubscribe from your MailChimp lists?
Of course you do, but your MailChimp plugin is probably no help beyond generating that subscribe form. What you need is MailChimp webhooks.
In this article, I’ll show you how to build a simple plugin to update your WordPress site with all your MailChimp list activity.
What Is A Webhook?
A webhook is simply a url that gets called when a certain event takes place, passing pertinent data about the event.