Just because your online content and services can technically be available 24×7, doesn’t mean you can’t impose availability deadlines as a powerful marketing tool. Limitation and deadlines are a powerful tool to drive conversions — getting fence-sitters to finally buy. Here’s a great email promo sent to prospects from AWAI for an educational course. Note it looks like text-only, although it’s formatted in HTML. Also note the use of a numbered list for ease in readability and strong benefit copy.