Email delivery that never sleeps.
PostMTA is enterprise email infrastructure — built for teams that send at scale and can't afford a single message going missing. Sub-second dispatch. 99.99% uptime. Full transparency.
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Delivered
2.1B+ emails/month
Trusted by engineering teams at
The Problem
Email delivery fails silently. Until it matters.
Shared IPs
Your sender reputation is held hostage by your neighbors' behavior.
Black-box analytics
You find out about failures when customers complain.
Manual warmup
Weeks of guesswork before you can send at volume.
The Solution
Infrastructure that watches itself.
Dedicated IPs included
Your reputation stays yours, forever.
Real-time analytics
30-second granularity. Know before your customers do.
Automated IP warmup
Scheduled ramping, zero guesswork.
Everything you need to send with confidence
SMTP Relay
Battle-tested MTA, drop-in replacement for SendGrid, Mailgun, SES.
Real-Time Analytics
30-second granularity. Bounce, complaint, delivery, inbox placement.
Dedicated IPs
Your reputation, not shared. Never affected by a neighbor's mistakes.
Webhook Events
Every state transition on every message. Delivered, bounced, complained.
DKIM/SPF/DMARC
One-click DNS. Automated key rotation.
IP Warmup
Scheduled ramping to build sender reputation automatically.
Send your first email in minutes
Connect
SMTP or REST API. Your existing code works. Drop in your credentials.
Send
We handle warmup, reputation, DKIM rotation, and delivery routing.
Monitor
Real-time analytics, webhooks, and alerts keep you in the know.
"We went from 68% to 97.3% inbox placement in three weeks. PostMTA's team actually understands email infrastructure."
Built for enterprises that need reliability
No shared IPs
Dedicated infrastructure, your reputation stays yours
White-glove support
A real human who answers the phone
HIPAA on all plans
No enterprise premium, no questions asked
Start sending in minutes.
30-day free trial. Full Professional access. No credit card required.