The Micro-Influencer Outreach flow is a flow that leverages Gatsby, a 3rd party app that helps stores connect with influencers better. Through Gatsby, stores can capture influencer handles in their sign-up forms and then encourage & reward them when they mention their store.
Engaging with new customers is a must if you plan on building a long-term relationship with them. The Post Purchase flow allows you to just that. It should not be confused with an Order Confirmation message (that is sent separately by your eCommerce platform) but is instead an opportunity to begin sharing brand and product information, providing helpful tips or FAQs, and to eventually upsell and cross-sell the customer on other products in your store.