Recent Articles

How we built the most performant Message Transfer Agent on the planet

Getting started When we started talking about building an MTA, there were a couple of items we knew had to be top of...

Site Names - The Right Solution for MX Rollup

Tl;Dr: As email moved from self-hosted to mailbox providers to white-label hosting with custom domains, both...

Getting your Kumo On

Um, what? What exactly is a Kumo, and why would you want one?

Announcing General Availability of KumoMTA (and First Production Deployment)

Introduction Today we're pleased to announce that KumoMTA is out of beta a full two months early!!

Native Tenant Awareness - No More Ambiguity

Over the years the MTA landscape has grown more sophisticated. In the beginning, Open-Source MTAs like Postfix and...

Open-Source MTAs - Now the Right Choice for Large-Scale Senders

Introduction I was recently watching a live stream of the excellent Deliverability Summit conference in Prague and was...

Understanding Message Transfer Agents (MTAs): The Backbone of Email Communication

Introduction In today's digital age, email has become an integral part of our personal and professional lives. We rely...