While most other online marketing seems to be adding more engaging visual, audio and video bells and whistles, e-mail is under threat of being stripped of its key charm: images that entice consumers to click through to the retailer or publisher's Web site. Not everyone is aware of the repercussions this will have, particularly for retail, news media and marketing. These industries are heavily reliant on e-mail marketing and communications as a key revenue source and driver for other channels.