ARCHITECTURE

The new approach
to email architecture

Unrivalled technology. Unparalleled performance.
ARCHITECTURE

The new approach
to email architecture

Unrivalled technology. Unparalleled performance.

A clean-slate revolution

Until now, the commercial MTA platforms that have long dominated the email landscape have been evolutions of legacy products. The result? Bloated code, patches on patches, and years of tech debt leading to instability, security risk, and less-than optimal performance.
At Kumo, our product engineering team’s first-hand experience designing and deploying some of the world’s largest sender platforms made us uniquely qualified to wipe the slate clean and start from scratch — not just because the old models failed to keep up, but because the industry was calling for a new approach.

Architected for today’s technologies

For organizations from emerging disruptors to specialized email service providers to the largest global enterprises, the need to integrate seamlessly into enterprise-grade and AI-first workflows is paramount. Our completely reimagined architecture was built with this need in mind, providing significant advantages over re-architected or pre-existing commercial offerings.
KumoMTA was purpose-built to be:

check Customizable. “Config as code” approach allows for extensive customization.

check CI/CD: Modular system leveraging continuous integration / continuous deployment processes and the extended Rust community allows for easier updates and future-proofing.

check Integratable. State-of-the-art integration features give you complete visibility with API injection/management, webhooks, AMQP, Kafka, secure keystores, and data-source-based configuration.

check Cloud-Native. Flexible cloud-friendly deployment options—including support for containers, clustered throttles, HAProxy, SOCKS5 proxies, and more—ensure smooth rollout, load balancing and reliable server performance.

Unmatched performance

Unlike expensive commercial MTA offerings or proprietary cloud platforms, KumoMTA was architected for speed and scalability, providing the speed, capabilities, and features demanded by enterprise mail teams, ESPs and other high volume senders:

check Fast. Send tens of millions of messages per hour on a single instance.

check Flexible. From straightforward configuration replacements to deep integrations into MailOps environments, you can quickly and easily shape your messaging workflows.

check Scalable. Modular, cluster-able design means you can scale horizontally using Docker and Kubernetes to support volumes up to hundreds of millions per day across multiple data centers.

check Safe. Deliver millions of messages per hour without data loss, and without dangerous shortcuts like in-memory spooling of messages.

Ben Dyer
Ben Dyer
Taguchi Marketing

“Kumo appears to be capable of far higher single-node throughput than our legacy MTA platform, which has far-reaching implications for increasing our capacity to handle larger campaigns in tighter timeframes. Additionally, our data and reporting systems originally provisioned around the requirements of the legacy MTA will likely have their operational life extended multiple years as a result of switching to Kumo. We expect to see significant improvements when warming up new IPs and onboarding new customers also.”

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