Two-sided marketplaces often face challenges with fragmented customer communication due to reliance on multiple third-party systems for authentication, payment, and shipping notifications. To enhance buyer and seller satisfaction, these marketplaces can adopt a unified notifications strategy focused on brand consistency, cross-channel reach, and intelligent orchestration. This approach allows marketplaces to send consistent, branded messages across various channels like email, SMS, and in-app notifications, ensuring effective communication without overwhelming users. By leveraging these strategies, marketplaces can improve user engagement, reduce friction, and prevent fraud. Tools like Knock facilitate this process by offering template management, multi-channel support, and workflow orchestration, enabling marketplaces to efficiently manage notifications and enhance the overall user experience.