Keep the email short. If you write an email that's too long, there's a chance that recipients will skim over it or stop reading it at a certain point. This could mean that they miss your call to action, or what you're trying to get across. Try to edit out pieces of information that aren't critical to the overall message. Make messages as short and concise as possible. Avoid over-elaboration or background that can clutter your blast.
Email design matters in any successful email marketing campaign. If your emails look terrible, that reflects badly on you, and can make people stop reading. With more people than ever reading emails on mobile devices, it’s important to use a responsive email template so your email resizes automatically whether people are reading it on a phone, tablet, or desktop.