Google is rolling out an update to Gmail, which will add a responsive design to the content we see in emails. What does this mean? Look at the following picture and you will get an idea of what the change is.
When we open emails with links in them, say for example YouTube pages, Gmail shows you a preview of the page.
The way it is displayed on a phone, using the Gmail app, differs vastly from what you will see on your desktop computer’s web browser. The latter has a larger screen and will display more content, but the phone app also displays the same, which isn’t exactly “mobile-friendly”.
This is about to change soon, with the responsive design. This is not an update to the app or a server side change, but an actual formatting design which email designers will need to use. Gmail ‘s new design will auto fit text, links, buttons on all screen sizes, so the emails look much better and easier to read or click on links. This isn’t restricted to Android devices, but also applies to desktops as well.
Gmail and Inbox by Gmail will begin supporting emails created with responsive design sometime later this month.
via Gmail Blog