Email marketing is a great way to engage your customers, keep them current and also make them loyal.

Email is a great way to start and nurture relationships with your customers, but don’t just send updates on your products. Give them a look inside your company. Share customer interviews and case studies. Write blog posts, and record short videos that will help your customers.

Maybe you have new content to share or you want to check in with current customers because you haven't heard from them in a while. Keep your emails personable and quick to read.

(Here are some more tips on building customer loyalty with email marketing and beyond, if you want other ideas: http://www.fieldboom.com/blog/customer-loyalty/.)