Postmark Platform
The Postmark Platform plan costs $18 per month for 10,000 emails.
What the plan includes
Unlimited domains, servers, streams and users, with inbound email. Extra emails $1.20 per 1,000; $66 a month at 50,000 emails.
As stated on postmarkapp.comThe plans either side of it
- Pro$16.50 per month for 10,000 emailsone below
10 domains, 6 users, inbound email, retention up to 365 days. Extra emails $1.30 per 1,000; $60.50 a month at 50,000 emails.
- High volumeCustomone above
Custom pricing for large senders, arranged through sales.
What else costs about this much
| Tool | Starts at | Free plan |
|---|---|---|
| Elastic Email | $19 a month | Yes |
| Twilio SendGrid | $19.95 a month | No |
| Emailit | $20 a month | Yes |
| KingSMTP | $20 a month | No |
| Resend | $20 a month | Yes |
| Bird Email | $15 a month | Yes |
Each tool’s own starting price, within a quarter of what this plan costs. A starting price is not the same plan, so read what each one includes before weighing them against each other.
Postmark Platform questions
How much is the Postmark Platform plan?
The Postmark Platform plan costs $18 per month for 10,000 emails. Unlimited domains, servers, streams and users, with inbound email. Extra emails $1.20 per 1,000; $66 a month at 50,000 emails.
What is the difference between Postmark Pro and Platform?
Pro costs $16.50 per month for 10,000 emails and gives you 10 domains, 6 users, inbound email, retention up to 365 days. Extra emails $1.30 per 1,000; $60.50 a month at 50,000 emails. Platform costs $18 per month for 10,000 emails and gives you unlimited domains, servers, streams and users, with inbound email. Extra emails $1.20 per 1,000; $66 a month at 50,000 emails.
Is it worth moving from Platform to High volume?
That depends on what you need. High volume costs Custom and adds custom pricing for large senders, arranged through sales. The listing is what each plan states; neither plan is graded on its own.
Does Postmark have a free plan or a trial?
Yes. Free developer plan: 100 emails a month with no expiry and no overages, for testing an integration or a small side project. No credit card needed.
When was this checked?
Oct 18, 2026, against https://postmarkapp.com/pricing. Vendors change prices and plans without notice, so confirm on their site before you buy.