These days, almost every day, we will end up receiving an email about a promotional offer but quite often they are image based. If you are a user with vision impairment, you cannot read that email with a screen reader. If you are viewing that email on a mobile device, often, images does not get loaded or take a lot of time to load due to poor connectivity.
Today (though not really new), I have observed email applications specially GMail uses some sort of intelligence to filter if an email is spam, if it decides as spam, it doesn’t by default load images of that email. Here is a screenshot of a promotional email I have recently received and how GMail displays it:
This Screen short displays a warning from GMail saying that this email may be spam and hence images are not loaded. Though there is an option to load images, what if user is a beginner or someone who does not know such features. In this scenario, actually messaging is lost. Fabulous emails can be generated using HTML and not really just as embedded into an image.