3. Design e-mails that catch attention

Don't be the kind of brand or company that has a clustered newsletter, even worse a boring-ly designed one! 

Your content may be top-class but if it isn't eye catching, no one's going to read it! Layout your content to be engaging, informative, and easy-to-read.

It also important to remember that you shouldn't overcrowd your newsletter. Try to use graphics or animation that support your content (but not too much).