GetResponse is an excellent tool for affiliate marketing because it allows you to create customizable email newsletters and autoresponders. This means that you can easily promote your affiliate products to your subscribers and then track the results of your campaigns. Moreover, GetResponse offers a variety of lead capture forms and opt-in forms that you can use to grow your email list. It has a wide range of features that make it easy to manage your affiliate campaigns, including automatic email tracking and reporting, as well as a built-in lead capture system.