The Fastest Growing Email Community
Our Sponsors and Users
Our Memberships
"We’ve known Kumo’s founders and worked with them for many years, That personal connection was critical.
The fact they’re involved was enough to get us over the line to becoming a customer."
"I really enjoy our MTA being open source and being able to see the issue and commit pipelines. It gives us a lot of transparency around where issues might sit that we never had before with a closed source MTA and lets us transparently know when bugs that are important to us are resolved. The pace of iteration and change that ultimately helps our end users is vastly improved."
Our Partners
Integration Partner
Ongage
Ongage is an email marketing platform that helps your business to personalize engagements and drive conversions through data.
Services Partner
Postmastery
Postmastery is a leader in email deliverability and email infrastructure management. They are an authorized EU-based support provider of Kumo for the purpose of selling and providing Support Services to KumoMTA End Users.
Deliverability Partner
EmailConsul
EmailConsul is a comprehensive email analytics and monitoring solution designed to enhance email deliverability. The platform provides DMARC analytics, inbox placement, threat intelligence, blocklist monitoring, in-depth reporting, and more to help businesses maintain a healthy sender reputation and ensure messages reach their intended audience.
Our Latest Blog Posts
Only 48 days after the last stable release, we bring you even more MTA goodness. This week, KumoMTA published the...
Slightly before the dawn of the Spring Equinox this year, KumoMTA published the third stable release of 2025. The first...
When we first conceived the idea of KumoMTA, one of the primary goals was to empower people to deploy wherever they...