Chances are you get a lot of email over the course of a day. This deluge of electronic communication may even be the reason you avoid sending them to your customers and potential customers. There’s a lot of noise out there. If you’re not regularly communicating with your audience it’s easy to slip their mind.
It doesn’t matter how much they like and trust you. If they don’t think of your business when they are in the market for your product or service, they won’t buy from you.