The answer to this question is that, yes, they do. An e-newsletter is a great way of building an opt-in list and keeping in touch.
Your newsletter list should include dormant customers, current customers, prospective customers, suppliers and influencers.
The key is to write interesting, informative and helpful material, which is relevant to your target market. How often should a newsletter be sent out? The answer is once a month (month in, month out).
The killer is the writing! However, there is a simple process which can help you to get the writing done.
There are numerous e-newsletter products available.
If you would like some advice on this subject: just ask.