How to place an image in HTML background in EngageOne Digital Delivery

While generating an eHTML output, there is an option of specifying URL of an image which would be rendered as email background when email is
opened by recipient. URL of the image can be specified as the 'Background Image' of eHTML output device configuration.

User-added image

To ensure that image URL is accessible, ensure machine on which email gets opened is connected to internet.

UPDATED:  April 13, 2017