1. Give incentives
Give people an incentive to subscribe to your newsletter. It offers a free program if they subscribe. It could be a free ebook, free report, free advertising, etc. Make sure the freebie will attract your target audience.

2. Joint Venture
Joint venture with a similar e-zine. Combine your subscriber bases together and publish a magazine. Edit and publish each issue together. We will promote the e-zine which means more subscribers.

3. Allow filing
Allow your subscribers to archive back issues of your e-zine on your website. They may need content for your website. If people visit your site and as your e-zine, to be signed.

4. form a ring E-zine
form a ring of e-zine. Team up with 4 to 10 similar e-zines. All editors according to the list of other e-zine subscription name and information on all issues. You could call this section "Other Free E-zines that you will enjoy"

5. Ask subscribers
Ask subscribers to your e-zine from friends, family or associates. If you enjoy your e-zine, to be signed. It's almost like your subscribers are supporting your e-zine.