There are several links on the Your Brand by Nick Leffler website which are affiliate links. There are two types of affiliate links on this website, services I recommend, and services that I simply link to.
The services I recommend come from finding they are superior from other similar services. I only recommend services that I am confident are the highest quality.
Services I link to are services that are mentioned in blog posts which I provide a link to. They are not usually services that I recommend, but they are not necessarily poor quality. The context of blog posts where they are mentioned should help explain if the service is good or simply linked to for relevance.
MailChimp is my recommended email marketing system because it is simple to use and has many features for automation. There are also several plugins that allow for seamless tie-in to WordPress.
BeaverBuilder is a great page builder that comes with many features that can replace many WordPress plugins. It makes it easy to create visually appealing websites rapidly and doesn't leave behind shortcodes.