Email marketing is a proven, direct approach to reach past customers who typically provide a high conversion rate. The content within the emails are typically special offers or promotions that your company is offering.
Why you should Send Email Newsletters
Once you have the system in place, it is a cheap way to reach people who are familiar with your company. While sales will most likely not be overwhelming the cost is so low that it is no big deal. It is a great way to keep your brand in the minds of customers should they ever need your services again. Additionally, technology allows full tracking of conversion rates so you can test different marketing strategies.
Email marketing is another piece of the puzzle that should be implemented, for sure. If you outsource to another company be sure they are using all of the proper techniques and not cross promoting some of their own services.