Building a Multi-Channel Notification Service in .NET 8

The article describes a .NET 8 multi-channel notification service that queues API requests in RabbitMQ instead of sending directly.

A dispatcher uses Scriban templates, applies per-recipient rate limits, and fans out work to channel-specific workers.

Email, SMS, and push delivery are handled by separate workers with retries and dead-letter queue support for failed messages.

The design improves responsiveness, resilience, and scalability while making it easier to swap providers or add new channels.