Email design is a big part in the world today. Many companies like to make their emails stand out and include promotional items, deals and special offers. Many popular brands like ASOS and Etsy like to include lots of imagery in the emails that they send, showing off popular items and promotions.
Sending emails to clients is important to maintain communication between company and client. You don’t want the customer to forget about you. Sending promotional emails or newsletters maintains contact between both parties.