SuprSend

SuprSend, built by SuprStack Inc., is a unified notification platform that lets companies send, manage, and optimize customer communications across email, SMS, push notifications, Slack, WhatsApp, and in-app messaging from a single system. It includes a visual workflow builder with branching logic and conditional triggers, batching and digest functionality, and 'Wait Until' triggers based on user actions, along with timezone-aware delivery optimization. Multi-channel WYSIWYG template editors support A/B testing, internationalization, and AI-powered template generation, while an in-app notification inbox ships as drop-in React components or headless APIs with a user preference center for opt-in/opt-out control. SuprSend offers native SDKs, an MCP server for natural language automation, real-time logging, and enterprise features including SOC 2 Type 2, HIPAA, GDPR, and CCPA compliance with SSO and audit logging. It offers a free tier to get started, with paid tiers available by contacting the company.