Do: Keep in contact with clients. Use time-specific coupons and rebooking discounts to inspire return visits. Use thank you cards and promotion updates to maintain connections with new and returning customers. Don't: Overdo it. A barrage of e-mails can deter clients from opening them. Aim for no more than once a week, but no less than once a month when it comes to e-mail frequency. Want to read more? Subscribe to one of our monthly plans to continue reading this article.