First add subscribe text box for your visitors to subscribe by their email. And manage the email lists then use these addresses for marketing. If you follow these steps then it would be free.
References :
http://www.prowebearning.com/

First you must know what is it than . Find Email address for mailing and start Marketing.Free Thousands Email Addrress Providing
References :
http://www.open-online-store.com

also go to http://www.Freewebsitetraffic.tv to get your site first page rank of the major search engines and thousands of traffic visitors everyday.
References :

We are running our own email marketing events by ourselves. You may do that in the same way.

We prepare our own monthly newsletter. It covers some industry news and our company news. These news are used to raise the interest of reader. Of course, we will also put our product information and other promotion in the newsletter.

We send our newsletter every months. The response rate is quite good.
We decided to put more effort on it.

I have used an email marketing software, called RoboMail, for some times. It’s quite easy to use.

I can prepare the email template & paste the HTML code directly. It also allow me to insert variable into the email content & title and we can make the email personalized to the receipients. This feature is really nice. We think personalization is the most important part of our email marketing.

You may try it too, it has trial version and allows you to send email
http://www.evinco-software.com/eng/robomail-mass-email-software.php
References :
Experience in my working company

The ten most important tips for anyone managing the email marketing process.
1. Only send emails to persons who have requested to receive them.
2. Only include content relevant to the type of content the person has requested.
3. Be consistent with your sending frequency. Pick a schedule, whether it is weekly, bi weekly, or monthly and as often as you can stick to that schedule.
4. In most cases it is best to send business to business emails Tuesday through Thursday. We’ve found that the best times of the day to send are just after the start of the day around 9:30am or just after lunch around 1:30pm. It is best to avoid sending business to business emails after 4pm or on weekends.
5. In most cases it is best to send business to consumer emails either between 5pm and 8pm Tuesday through Thursday or between Friday evening and Sunday afternoon.
6. To improve deliverability, add a message at the top of your emails that says something like: “To ensure receipt of our emails, please add something@yourcompany.com to your Address Book.”
7. Make the From Name for your messages either your company name or the name of a person at your company. Once you choose a From Name, keep it consistent. During the split second decision subscribers make whether to open your email, the most important factor in their decision is whether the From Name is familiar to them.
8. Be sure to include both a plain text and an HTML version of your newsletter. iContact will automatically detect which subscribers can view the HTML message and which can only see the plain text message. If you don’t include a plain text message, around 5% of your recipients will see a message with nothing in it.
9. Don’t use all caps or multiple exclamation marks within your subject line or body. Doing this will trigger spam filters. See our section below on Deliverability Best Practices for additional words to avoid.
10. Build your list at every opportunity you have. If you have a retail location, add a point -of- sale sign-up form. At conferences or events, bring a paper sign- up form or have a laptop with a sign -up form set up and available for interested parties. Finally, add your newsletter sign up form to every page on your web site. You can use the signup form generator within iContact to automatically generate the code you need.

Below is the link for more on Email Marketing
References :
http://www.ezdia.com/Best_practice_for_email_marketing/Content.do?id=434

Here’s a good primer on getting started with email marketing for the first time: http://www.activecampaign.com/blog/bulk-email-software/

You will need a good web host, an email marketing software package (I recommend http://www.activecampaign.com/email-marketing/ as a solid program that can grow with you), and an opt-in email list. Check the links at the bottom of the article for tips on building up your subscriber list both online and offline.
References :

Check this website..http://aweber.com/?334307
References :