Courier Create is an innovative embeddable message designer specifically built for React apps, enabling complex B2B platforms to provide their customers with a seamless way to design and manage personalized notifications directly within their applications. By integrating Courier Create through a simple SDK setup, companies can allow their users to customize message content, structure, and branding while maintaining secure, account-specific settings using JWT authentication. The tool supports multi-tenancy and scales efficiently, ensuring each customer's templates and branding remain isolated and protected while automatically syncing to Courier's comprehensive delivery infrastructure across various channels like email, push, SMS, and in-app notifications. The platform's ease of integration and scalability make it an attractive solution for businesses looking to enhance user-owned messaging experiences without the burden of complex integrations or additional services.