These ads will likely follow the lead ad or lead generation template, including a form where Facebook users can fill in their name and email address directly. Being able to enter this information directly on Facebook cuts down on the work required from potential subscribers to complete the process. Just make sure that the ad copy and images you use really sell the value of your newsletter, otherwise the ads won’t be nearly as effective.
While carousel and collection ads are the obvious choice for these kinds of situations, a dynamic product ad or Instant Experience ad can also work well. Regardless, when featuring a set of products, make sure that each one is visually distinct from the other and includes its own headline and CTA (which should be specific to the individual product).