Email marketing is important to any online business nowadays; however, not every online store can make use of it. To some Magento 2 store owners, the limitation in the management of email marketing campaigns on the Magento 2 default setting has lead to possible loss in profit and productivity due to the inefficiency management of email marketing.
Moreover, regular emails comparing to transaction emails have low open-rate and are usually considered to be spam. Low engagement with the customers will prevent the Magento store owners from retain customers and possibly lead to low customer satisfaction.