In 2012 I redesigned the WCH email newsletter to focus heavily on images and graphic elements. We feature four or five items each month, which are highlighted by large images (the same ones we use for our online slideshows and internal digital signage) and minimal text. This new design has increased open rates.
We also added the ability to target our audiences better and automatically send emails based on blog posts. This has seen an increase in engagement with our email newsletters.
One part of this email campaign that I am very proud of is adding an animated header. Adding a .gif that is relavant to the season or specific activities has been very popular with our users.