KumoMTA icon
KumoMTA icon

KumoMTA

KumoMTA is the only true Open-Source PowerMTA alternative, capable of matching performance of several million messages per hour while providing granular traffic shaping configuration and automation across unlimited IPs.

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  • Self-Hosted
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Office & Productivity, Online Services

GitHub repository

  •  533 Stars
  •  102 Forks
  •  93 Open Issues
  •   Updated  
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KumoMTA was added to AlternativeTo by Mike Hillyer on and this page was last updated .
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What is KumoMTA?

KumoMTA is the only true Open-Source PowerMTA alternative, capable of matching performance of several million messages per hour while providing granular traffic shaping configuration and automation across unlimited IPs.

KumoMTA is a more flexible PowerMTA alternative, offering a configuration and automation system powered by embedded Lua scripting, allowing it to be extended to accommodate any use case.

KumoMTA provides all the functionality of the top commercial MTA solutions such as Halon and Green Arrow, but with better performance and an Open-Source license.