In this always-on, mobile world, consumers receive a constant flood of marketing communications across multiple channels, including email, SMS texting, smart phone apps, social media and now even smart TVs. But email remains among the most efficient and cost-effective ways for a small- to medium-size business to promote itself and generate business.

To get the most out of this important marketing channel, consider these five email best practices:

1. Start with a Great List

The best email campaigns won’t help you sell more if they aren’t targeting enough of the right people. So building your opt-in list is essential. Many small businesses go only as far as including a website opt-in form.…