Send a memorable gift for the client's birthday or the anniversary of your business relationship.
The customer hasn’t made a purchase in a while? Reach out with a gentle reminder about your brand and present them with a gift card.
Reward the customers who’ve shared their feedback with you. They'll be more willing to contribute next time around, and post their positive opinions online.
If a client is dissatisfied with your services, send out something nice to soften the blow while you’re working on solving the issue.