In addition to the topic, a sample text, images of the hero, copies of the letter and images, there is another element that should not be neglected. Once the target group has been reached, you should define the goal of the mail campaigns. What was the power of email and what caught your attention? It must have been an interesting copy of an email that made a difference. Your copy can make or break your email campaigns. See this Readdle letter which contains a sketch of the YouTube video and then the CTA in the first folder. You can store and send content in your emails to build brand loyalty and encourage collaboration with other companies.