Constant Contact Extension
WooCommerce Constant Contact Extension
That is where this extension comes in handy! The constant contact extension for WooCommerce allows you to easily add opt in buttons almost anywhere on your website.Email marketing is powerful way to engage with your customers and keep them coming back to your store.
Once setup this extension gives you the option to add an opt in tick box on your checkout page as well as a widget that allows your customers to opt in which can be placed where you decide.