Spend some time putting in work on a landing page. This is the place where you’ll drive traffic to. The people who subscribe to your mailing list are going to be easier convince to back you when your campaign starts. In my experience, simple landing pages work best. Also, just asking for email, or name & email, will increase the number of raw leads. It good to explain the benefits, with only some of the features. This will keep them curious. I think WIX is an excellent source to build a landing page and a website. They just make everything really easy and user friendly.