1. Swap sponsor, feature, or solo ads with other ezine publishers.
Your swaps will create a win-win situation as both you and other publisher will successfully get profitable promotion at no cost.
Swap your ads for at least three issues in a row or three solo ads for three solo ads to get greatest results from these swaps.
2. Provide your visitors with a bonus for subscribing to your ezine such as access to your membership site, ebooks, a complimentary ad, or something else that your visitors would find to be valuable.
Increase value your visitors place on your bonuses by telling them how much they would be worth if they were to pay for them or by making them available for only a limited amount of time.
3. Write articles.
Your articles will help you to establish yourself as an expert in your field and get more of your subscribers to visit your site.
Your articles can also be used as a valuable promotional tool that increases your circulation.
Add a resource box that promotes your ezine or a line to your resource box that promotes your ezine in addition to your business and then get word out about your articles.
An excellent way to do this is to submit your articles to article directories, article announcement lists, and to other ezine publishers.
Also publish your articles on your site and let your visitors know that they can reprint your articles.
For a list of article directories, and announcement lists that you can submit your articles to visit: http://netpromarketer.com/articlepromote.html