You could tell your visitors that you offer original content in your free e-zine. For example, you could say, "Subscribe to our free e-zine and get our all- original content!" Another example, "Subscribe to our free e-zine and get the latest, up-to-date business news!"

You could tell your visitors to read a sample issue of your free e-zine on your web site. For example, you could say, "Read a sample issue before you subscribe to our free e-zine!" Another example, "Check out a sample article before you decide to subscribe to our free e-zine!"

You could offer your visitors free software if they subscribe to your free e-zine. For example, you could say, "Subscribe to our free e-zine and get our new marketing software free!" Another example, "Subscribe to our free e-zine and download our e-book software for free!"

You could offer your visitors a free sign up to your affiliate program if they subscribe to your free e-zine. For example, you could say, "Subscribe to our free e-zine and gain access to our profitable affiliate program!" Another example, "Get a free subscription to our affiliate training newsletter when you become one of our affiliates!"

You could offer your visitors a free web service, like free e-mail, if they subscribe to your free e-zine. For example, you could say, "Subscribe to our free e-zine and get a free bonus e-mail account!” Another example, "Subscribe to our free e-zine and get a free autoresponder!”

You could publish some of your current e-zine subscribers’ testimonials on your web site. For example, you could say, "Why put off subscribing? Just see what other subscribers are saying!" Another example, "Subscribe today and experience the benefits the people below are experiencing!"

You could publish any positive reviews you have received about your free e-zine on your web site. For example, you could say, "Just read this review from (publication name) about our free e-zine!" Another example, "Check out our e-zine review in (magazine name)!"

You could tell your visitors what's going to be published in your next e-zine issue. For example, you could say, "Subscribe now so you don't miss our next issue about (topic)!" Another example, "Subscribe today and learn about how to (topic) in next week’s issue!"

You could tell your visitors that they have the right to republish your e-zine’s content on their own web site if they subscribe to your free e-zine. For example, you could say, "Subscribe to our free e-zine and we will give you the right to republish our content on your website or in your e-zine!"