In addition, it also provides you with a great deal of social proof because if somebody reads about you and whatever it is that you are selling in a newspaper or magazine, they are more likely to take you seriously. There are many free press mailing list release sites on the internet you could use. I have done this with a very high level of success. Yet another technique that you can use is to create insightful articles and post those articles throughout the Internet.
At the end of each of these articles you will want to include a link to whatever relevant website you are promoting. Ideally, that relevant mailing list website will include an option page that will enable you to grow your mailing list. You could do a quick search with your favorite search engine and find a huge list of article directories you could post to.
Finally, it certainly never hurts to reach out to more established individuals within the marketplace to see if they might be interested in promoting whatever product you are selling. Once somebody purchases your product, you can mailing list then invite them to join your mailing list. This is yet another way to grow the size of your mailing list without having to directly spend any money of your own.