An Email Service Provider (ESP) is a company that offers you a way to send automated email messages Online. AWeber is our preferred ESP because of its ease of use and services. Here's a link for you to set up your account: http://www.ospautoresponder.com
Online Sales Pro integrates with four ESPs when we create swipes for our customers: AWeber, MailChimp, GetResponse, and ActiveCampaign.
This means that the swipes we create for you would then connect the leads from your landing page to your ESP's autoresponder, sending sales messages to the potential customers who sign up for more information about your product or service.