Businesses send out marketing newsletter emails that provides the audience on the newsletter subscription list promotions, announcements, and brand content regularly. According to Statista, 333.2 billion emails are expected to be sent and received each day in 2022 and the number is expected to grow every year. Marketing newsletters are one of the most common types of emails that businesses send out, but it is also the hardest to get right. Many businesses consider it a challenging task to create engaging content to keep the audience’s attention and to make them read the email.