If you want the consumer to see photos, add a link to a website that already displays photos. For example, if you're selling a home, add a link to the listing on your website. If you're selling an item that is also posted on a site like Amazon, provide a link to your Amazon post.
Tip: If the URL is long, go to a site like tinyurl.com to shorten it. Then, paste it in the "Main Info" or "Auto-Responder" section of your promotion.