1. Design for the preview pane-The human eye normally scans an email from the left top corner to the right top corner and then down. So, it's a good idea to have a graphic banner for visual impact, but it should not be too large. That is why you should try to get the main idea of your message as close to the upper left corner of your email, so it can be visible in the preview pane, without the reader needing to scroll down.
2.The background color- If you wish to use an image in the background of your design, just keep in mind that some email providers are not compatible with having a background, that is why we recommend not to use background images, that way your newsletter can look exactly how you want the client to see it.
3. A link could save the day- It is a wonderful idea to provide a link based on your website, because even though you may put great efforts in your newsletter, there could be visualization problems. This will allow your clients to see the newsletter on the browser if they cannot see it in their inbox.