1) Showoff Well Known People
You could publish a list of well known, famous, or respected people who have subscribed to your free e-zine. For example, you could say, "Just look at who else is subscribed!" Another example, "Look at all the experts who have subscribed to our e-zine!"
2) Increase Perceived
Value
You
could tell your visitors what a subscription to your free e-zine
is worth in dollars. For example, you could say, "Subscribe
to our free e-zine. We used to charge $120 a year for a subscription."
Another example, "Subscribe to our free e-zine! (Valued at
$99!)"
3) Publish Viral Content
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!"