Built for Email
at Scale
Enterprise-grade email delivery infrastructure platform built on KumoMTA. Self-hosted, AI-powered deployment with LLM auto-healing, 71+ REST API endpoints, advanced analytics, and comprehensive deliverability management. Full control. No vendor lock-in.
Our Mission
Email is the backbone of digital communication — marketing campaigns, transactional receipts, password resets, notifications, and critical business alerts all depend on reliable email delivery.
Yet most organizations rely on third-party email service providers that impose arbitrary limits, increase costs at scale, and provide little visibility into the deliverability pipeline. PostMTA was built to change that.
We believe that organizations should own their email infrastructure — deploy on their own servers, control their reputation, and have complete visibility into every aspect of delivery. PostMTA gives you full control over your email infrastructure without compromise.
Built on Proven, Open-Source Technology
PostMTA integrates industry-leading open-source components into a cohesive, production-hardened email delivery platform.
71+ API endpoints, high-performance server
Responsive dashboard with App Router
17 optimized database tables
In-memory cache, rate limiting, sessions
High-performance MTA engine
Reverse proxy with TLS termination
LLM auto-healing deployment
Service management with auto-restart
Enterprise-Grade by Design
Open Source Foundation
Built on open-source technology. KumoMTA at its core, with full transparency.
Enterprise Security
Self-hosted on your infrastructure. Full control over data, compliance, and security.
AI Innovation
Revolutionary LLM auto-healing deployment. Self-healing infrastructure with zero-trace AI.
Ready to Transform Your Email Infrastructure?
Deploy PostMTA on your own infrastructure in under 30 minutes with our AI-powered setup. Full control, enterprise-grade security, and expert support when you need it.