Offer an incentive to your visitors. You should, whenever possible, offer them a free gift if they subscribe, such as a free report or ebook. There a hundreds of free ebooks which you can give away. You are bound to increase your sign-ups by doing this, provided you offer them something related to your site's theme. In fact…
If your website is related to the content of this site, you can give away this PDF file, “Earn Money at Home – The Science of Making Money Online” to all your subscribers as a free gift.

Next, you should submit your newsletter to all the newsletter directories you can find. There a plenty of them on the net and some of them get a lot of traffic every month. If your articles are good quality and informative, newsletter and website publishers will be interested and your work could get published in hundreds of different newsletters and websites. Not only will this increase your credibility, it could result in thousands more visitors to your site. This is because at the end of all your articles which you allow others to publish will be an “About the Author” section and a link back to your website.

Also, if lots of your articles are published on other websites then your link popularity will improve dramatically. This will result in higher search
engine rankings in afqam and the other engines that use link popularity as a ranking factor, which or course means lots more visitors and profit for you.
Include details of your newsletter in your signature file. This is the little bit of text that you attach to every email you send to people you are in contact with. In fact, your email signature file will also be included with any email discussion group correspondence you have.

Email discussion groups like those provided through afqamansgroup offer a great way to communicate with people who have similar interests as the topic of your newsletter. Contribute to the discussion by posting useful information and solutions to problems. You can also mention
"We have put together more in-depth advice on xxx. Feel free to visit our website. You’ll find loads of free information and resources."

This technique alone will drive much more traffic into your site. It also begins to establish you, the author, as an authority in your field. Once your online customers come to trust your information, they will also trust your recommendations for products/services you endorse.
Similar mediums to email discussion lists are newsgroups and online discussion forums. Remember that you cannot advertise your newsletter directly in any of these mediums, but listing your website in your signature is perfectly OK (in most cases). The amount of subscribers you get through your forum signature file will depend on the quality of your post. If you post interesting and useful information, people will think that your newsletter/website will also be helpful.

Apart from these, ad swaps are a very effective way to gain subscribers. You should find other publishers with newsletters similar to yours and trade ads with them. You run their ad and they will run yours. This helps both parties. You should swap ads with publishers who have a comparable list size to your own. Another method of swapping would be to have the other webmaster recommend your newsletter in the confirmation email he or she sends to people who have just subscribed, and you in turn could do the same for them.