They allow you to showcase your expertise in a way that helps build awareness and confidence in your company.
And great content will prompt your readers to take action--visit your website, make an inquiry, book an appointment, request a proposal or come in to shop.
You are an expert in your field, and a newsletter gives you the chance to show it by giving your readers valuable nuggets of information that they can take action on.
When you consider what topics to cover, think of the questions that you are frequently asked.
Giving them a little bit of free advice every month will build their trust in you and make you the obvious choice when they're in need of what you offer.
Invite your readers to submit their questions, and in each issue choose one or two to answer.