Promotion through email marketing is very effective to sell your products or services online. Easy way is you need a wordpress plugin like wisija, newsletter plugin to do that, if you don't know, google it , send can make in cron job for number of emails each hour.
Mailchimp is free for 2000 subscribers. It's great coz you can create your own HTML themes and you can also use their basic templates. You can also connect it with Google analytics so you can track the data.
Email marketing is a way to reach consumers directly via electronic mail.Email marketing also provides an easy way to track how effective it is. By keeping track of how many hits your website gets after a mass mailing, itâ€™s easy to gauge whether this technique works for your company. Email marketing can be more than just text, rich media formats can provide images and give your product or service texture and flavor.
First I would like to know for which domain you want to run the email marketing campaign? If you are want to go through Classified site then I would like to recommend you Craig dominator, Backpage dominator, Zillow scraper etc. It has the option to fetch the email ids from the respective keywords
and send mail to all that. These scrapers have option to promote your products through email marketing.
Email marketing can provide benefits only if it is used properly. Make sure that your email newsletter is precise and impressive. If it has a boring subject and boring content, then people will never read it and they will also not be interested in your new email newsletters.