There are some great tools for email marketing available, including Aweber, MailChimp, SendReach and Constant Contact. That career is SEO consulting. These are all very popular tools that do the job, with the added bonus that they're all very easy to use. Again, these are slow, but effective (and free) ways to generate traffic. In addition, there are a huge number of templates that can give you very professional-looking emails to send out.
Look at other companies and who they are marketing to, see what need you fill for each demographic and what their buying habits are and explain why you want to market to the specific segments you've chosen. The supplier provides the actual product.