1. Pricing Structure: Braze offers a more customizable pricing structure based on the volume of messages sent and the number of active users, allowing for more flexibility and cost-effective options compared to Mailchimp.

2. Messaging Channels: Braze supports a wider range of messaging channels including in-app messaging, push notifications, email, and SMS, providing a more comprehensive approach to user engagement compared to Mailchimp which primarily focuses on email marketing.

3. Personalization Capabilities: Braze provides advanced personalization capabilities such as AI-driven recommendations and dynamic content delivery, enabling brands to deliver highly tailored and relevant messages to users, surpassing Mailchimp's more basic personalization features.

4. Automation and Workflow: Braze offers robust automation and workflow tools that allow for complex user journeys and trigger-based messaging, surpassing Mailchimp in terms of intricate automation capabilities.

5. Data Analysis and Reporting: Braze provides more in-depth data analysis and reporting features, with real-time analytics and detailed insights into user behavior, giving businesses a better understanding of campaign performance compared to Mailchimp's more limited reporting capabilities.

6. Integrations: Braze offers a wide range of integrations with other platforms and tools, facilitating seamless data transfer and cross-platform marketing efforts, enhancing its overall usability compared to Mailchimp.

In Summary, Braze stands out from Mailchimp with its more customizable pricing, diverse messaging channels, advanced personalization, robust automation, detailed data analysis, and extensive integrations.