Email marketers know just how vital understanding key performance indicators (KPIs) are to the success of their marketing efforts. Knowing your brand’s personal numbers is an excellent start. However, those numbers really mean nothing if you have nothing to compare them to. This fact is especially true for ecommerce brands that are looking to improve their conversion rates. Before we can dive into ecommerce conversion rates by industry for 2019, let’s discuss what an ecommerce conversion rate is. What is…