Search on the google you will find many email marketing company which can offer services as per your budget. If you have data base, there are few email marketing companies like mailchimp.com which can allow you to send emails up to certain numbers. If you are new, I would suggest you to prefer experts help.
Here are some of the tips, which can help you to start email marketing
1.Make it easy to subscribe means Post a signup form on your homepage, blog, Facebook page, and wherever else your customers and fans are already active.
2. Personalize email whenever possible
3. Have Email drives accessibility across-channels
4. Optimizing for mobile is extremely important
5. Build an acquisition strategy
6. Tell subscribers what to expect
7. Send a welcome email
8. Design your newsletter to fit your brand.
9. Send people content they want means Email newsletter services offer features like groups and segmentation to help you make your content relevant to the people reading it.