PostMTA
PostMTA is an enterprise email delivery platform built on KumoMTA.
Pricing: paid — Free trial available · Visit website
PostMTA is a robust self-hosted email delivery solution designed for enterprises. It leverages AI-powered deployment, offers over 71 REST APIs, and includes features like DKIM/DMARC/BIMI support, IP warmup automation, bounce management, SMTP relay, and advanced deliverability analytics.
Pros
- AI-powered deployment
- Over 71+ REST APIs
- Advanced email deliverability analytics
Cons
- Self-hosted requires technical expertise
- Limited free tier available
- Initial setup can be complex
FAQ
Is PostMTA open source?
No, it is a paid solution.
Does PostMTA support DKIM/DMARC/BIMI?
Yes, it supports these features.
What is the pricing model for PostMTA?
Paid with a free trial.
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Last updated: 2026-09-11