Image spam is a type of email that contains images instead of words. It's usually used to get people to click on bad links, which can lead to viruses or other problems for your computer. It looks just like a regular email, but instead of containing words, it has images or even animations. When you click on the images, you can usually be taken to a website that isn't safe, so it's important not to click on any images in emails that you don't recognize.