GreenArrow has released version 4.357.0 of its email engine, introducing several updates aimed at improving monitoring, queue handling, and bounce management for high-volume senders.
The key updates include:
- Prometheus Metrics Integration
The new release adds support for Prometheus metrics, allowing teams to monitor message throughput, latency, and throttling in real time. This makes it easier to track performance and identify issues quickly. - Remote Throttle Optimizations
The update improves the engine’s remote throttle code, helping manage message flow across many domains more efficiently and reducing potential delivery bottlenecks. - Queue Behavior Changes
For the HTTP Submission API, messages will now return an error if the internal queue is full, rather than being silently enqueued. This provides clearer feedback to senders and helps prevent delayed or lost messages. - New Bounce Processor Rules
GreenArrow has added additional rules for bounce processing, helping senders manage backpressure and maintain stable inbox placement during spikes.
Impact for Senders
These changes improve observability, reliability, and bounce management, which are crucial for teams managing high-volume email campaigns. Prometheus integration and queue handling updates provide more transparency and control over message delivery, while bounce rules and throttle optimizations help maintain consistent inbox performance.
GreenArrow is an enterprise member of emailexpert, supporting our mission to connect email and digital messaging professionals worldwide.
