WooCommerce by WordPress is very popular eCommerce software. I have many clients that have integrated their Shopify, WooCommerce, Magento and other eCommerce software with Mailchimp. The simplicity of marketing your products effectively is incredible once your store is integrated with Mailchimp.
Best of all, many of the eCommerce integrations with Mailchimp are simple to setup and, once setup, just run in the background (for example customers are automatically added as contacts into your Mailchimp audience).
In the video below I show how easy it is to connect WooCommerce with Mailchimp. You’re then well on your way to getting more sales.