Postmark API pricing
Transactional-only specialist that consistently leads deliverability benchmarks with a never-expiring dev tier.
Free tier or trialBilled per monthly email volume·Verified Jun 27, 2026
Free tier
100 emails/mo (never expires)
Plans and prices
| Plan | Price | What it covers |
|---|---|---|
| Developer (Free) | $0/mo | 100 emails per month, never expires; full API access for testing |
| Basic | $15/mo | 10,000 emails included; overage $1.80 per additional 1,000 emails |
| Pro (Most Popular) | $16.50/mo | 10,000 emails included; overage $1.30 per additional 1,000 emails |
| Platform | $18/mo | 10,000 emails included; overage $1.20 per additional 1,000 emails |
| Dedicated IP add-on | from $50/mo per IP | Requires ~300,000+ emails/month and Pro plan or higher; discouraged for lower-volume senders |
What to watch for on the bill
- Expensive at scale, ~$600-900/mo for 500k emails vs ~$50 on Amazon SES; economics favor SES/Mailgun beyond ~200k/month
- Some long-time users report concerns about pricing posture and practices since the ActiveCampaign acquisition
The pricing page, as we saw it
Source: https://postmarkapp.com/pricing. Prices change. Confirm on the vendor page before you commit.
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