• Outlook does not support background images;
• Gmail mobile app (all platforms) partly supports Responsiveness.

If you're looking for a responsive template that is easy to modify this design is the best solution! The structure is simple starting with an empowering heading image and slogan and continuing with a grid structure. Like most modern email templates, the emphasis is set on images and slogans.

The design is also compatible with MailChimp and Campaign Monitor which allows you to stay on top of your campaign. Also, most email clients accept this format and display it correctly.