KumoMTA

Take Control of Your Email Infrastructure

Free

Description

KumoMTA is a robust Mail Transfer Agent (MTA) built to empower enterprise organizations with reliable, high-throughput email delivery. Released under the Apache 2 license, it offers a transparent and open-source approach, enabling businesses to break free from restrictive commercial licenses while leveraging a scalable and customizable email infrastructure solution.

Designed for large senders, KumoMTA allows seamless integration with modern technologies such as Docker, Kubernetes, and a rich Lua scripting engine. Its architecture supports advanced observability tools, direct database access, and horizontal scaling, making it ideal for managing complex MailOps environments and ensuring optimal deliverability.

Key Features

High Performance: Capable of sending millions of emails per hour on a single server
Horizontal Scalability: Easily scales across multiple servers with Docker and Kubernetes
Integration Flexibility: Supports Lua scripting, webhooks, AMQP, Kafka, and direct database access
Advanced Observability: Compatible with Prometheus and Grafana for monitoring
Open-Source Model: Released under Apache 2 license with transparent GitHub-hosted source code
Community Driven: Active community supporting and improving the tool continuously