2K+ messages/sec at peak load

2K+ messages/sec at peak load and 99.9% delivery rate across SMS and email. That is what I built Conjoin Messaging for. Conjoin Messaging is a high-throughput messaging platform designed for reliability across multiple channels. I built the core delivery pipeline, including queue-based processing, retry handling, provider-aware rate limits, and delivery tracking.

The result was a messaging layer that could handle traffic spikes without sacrificing deliverability, giving teams a dependable foundation for transactional notifications, lifecycle messaging, and user engagement. I owned it end-to-end of course, building the backend messaging infrastructure, focusing on performance, reliability, observability, and operational resilience. If you're building critical backend systems or planning to start one without knowing how, let's talk.