Responsive Html Email is a newsletter that has a combination of HTML and inline CSS coding that allows it to display perfectly across different devices such as Desktops, Tablets, and Mobile. For example, without making use of responsive emails, the same newsletter that shows up perfectly on a PC monitor but on mobile devices does not look good.
Responsive Html Email automatically adapts to all screen resolutions, allowing subscribers to read emails on the go with convenience and meeting a modern demand in mobile presence.
Responsive HTML emails using media query css under a specific width. By default is for the Desktop & Microsoft Outlook version and when it goes to tablet and mobile devices, the media query will be activated. Then the Email will show perfectly on tablet and mobile devices.
Another important thing is that for Outlook version emails, always need to use Outlook conditional code.