Envoy lets SaaS teams reliably deliver email, SMS, and system notifications from a single platform, with built-in retries, provider failover, observability, billing, and access control.

Built with Go, PostgreSQL, Redis, Docker, Kubernetes, and AWS, the system is designed around the problems that become difficult at scale — duplicate messages, failed providers, retries, concurrent requests, and tracking delivery across multiple tenants.

Teams can trace a notification from trigger → processing → provider → delivery, while logs and workflow visibility make it easier to identify and debug failures.

The platform also supports multiple providers per channel, so providers can be switched or added without rebuilding the notification pipeline.

Multi-tenant architecture

Async notification processing

Idempotency and duplicate prevention

Retry + automatic provider failover

Provider abstraction

Billing & quota enforcement

Role-based access control

Observability and delivery tracing

Automated AWS/Kubernetes deployment

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