Postmark pricing
Every published tier, with the effective cost per 1,000 emails calculated from the list price. Transcribed from Postmark's own pricing page, not from a vendor summary.
The free tier, and what it actually allows
- › Developer plan, intended for testing rather than production traffic
- › Full message retention still applies at 45 days
Every paid tier
| Plan | Price | Included | Overage | Per 1,000 |
|---|---|---|---|---|
| Basic | $15.00/mo | 10,000 | $1.80 per 1,000 | $1.50 |
| Pro | $16.50/mo | 10,000 | $1.30 per 1,000 | $1.65 |
| Platform | $18.00/mo | 10,000 | $1.20 per 1,000 | $1.80 |
Per-1,000 figures are list price divided by included volume. They ignore overages, which are billed separately at the rate shown.
What the headline price does not show
- › All three paid plans start at the same 10,000 emails. Moving up buys retention and features, not volume, so the effective cost per 1,000 rises while the overage rate falls.
- › That inversion means the right plan depends on how far past the included volume you expect to run. Below 10,000 the cheapest plan wins; well above it, the higher plan with the lower overage does.
- › Dedicated IPs need 300,000 sends a month before Postmark will sell you one.
add-ons
- Dedicated IP (Pro and above, 300,000+/mo required): from $50/mo per IP
Entry price against the alternatives
| Provider | Free tier | Paid entry |
|---|---|---|
| Postmark | 100/mo developer plan | $15/mo for 10,000 emails |
| SendGrid | 60-day free trial only (permanent free tier was removed May 2025) | $19.95/mo for 50,000 emails |
| Amazon SES | Up to $200 in AWS Free Tier credits for new accounts | $0.10 per 1,000 emails |
| Mailgun | 100/day permanent free plan | $15/mo for 10,000 emails (Basic) |
| Resend | 3,000/mo permanent, capped at 100/day, one domain | $20/mo for 50,000 emails |
Each figure carries a last-checked date on that provider's profile. See Postmark alternatives for a ranked view.
Common questions
How much does Postmark cost?
Postmark starts at $15.00/mo for 10,000 emails a month, which works out to $1.50 per 1,000. The published tiers run up to $18.00/mo for 10,000. Rates verified 2026-08-06 against https://postmarkapp.com/pricing.
Is Postmark free?
There is a free tier at $0.00/mo covering 100 emails/month, but Developer plan, intended for testing rather than production traffic.
Is Postmark cheaper than SendGrid?
At the entry tier, Postmark is $15.00/mo for 10,000 against SendGrid at $19.95/mo for 50,000 emails. The free tiers differ too: Postmark offers 100/mo developer plan, SendGrid offers 60-day free trial only (permanent free tier was removed May 2025).
What is the cheapest Postmark tier per email?
The $15.00/mo tier at 10,000 emails, which is $1.50 per 1,000. Note that cost per 1,000 does not fall monotonically as you move up the plans.
reading this as developers picking email infrastructure
The question here is which one a backend engineer would rather operate. That means SDK depth in the language already in use, whether a retry can safely be replayed, how much the event log tells you when a customer says the email never arrived, and whether the pricing curve stays sane as volume grows.
Applied to Postmark pricing, that means weighing developer experience, SDK breadth, idempotency keys, and operating track record ahead of the rest, against password resets, receipts, and magic links shipped from application code.