Your customer list represents the majority of your future income. Don't leave it unattended. To make money from your customer list, you must make regular contact.
Studies show that 55 percent of the customers you lose leave because you paid them no attention. Another 16 percent leave because they got a competitor's offer. That's 71 percent who really leave you for the same reason: You weren't there but your competition was. There's no need to let that happen. Staying in touch ensures a higher "top-of-mind" rating with customers.