How much does Postmark cost in 2026? Pricing breakdown
Quick Answer: Postmark restructured its pricing in 2026. As of July 2026: a Free plan ($0, 100 emails/month, hard cap) plus three paid tiers that all start at 10,000 emails/month and differ mainly by overage rate — Basic $15/month ($1.80 per 1,000 extra), Pro $16.50/month ($1.30 per 1,000, the "Most Popular" tier), and Platform $18/month ($1.20 per 1,000). Transactional and broadcast streams are on every plan; dedicated IPs are $50/month each and DMARC monitoring $14/month per domain. Postmark is known for strong inbox placement on transactional email.
Postmark Pricing (as of July 2026)
Postmark restructured into a Free plan plus three paid tiers that all start at 10,000 emails/month and differ by overage rate and features.
| Plan | Price | Base | Overage |
|---|---|---|---|
| Free | $0 | 100 emails/mo (hard cap, no overage) | — |
| Basic | $15/month | 10,000 emails | $1.80 per 1,000 |
| Pro | $16.50/month ("Most Popular") | 10,000 emails | $1.30 per 1,000 |
| Platform | $18/month | 10,000 emails | $1.20 per 1,000 |
The 2026 change replaced the old per-volume tiers (10K/50K/100K/300K) with three tiers at the same 10,000-email base — the price step ($15/$16.50/$18) buys a progressively lower overage rate, which matters most for high-volume senders. Add-ons: dedicated IPs from $50/month each, DMARC monitoring $14/month per domain, custom activity retention from $5/month. Billing is monthly on volume (no annual plan).
How to choose
- Small/testing: Free (100/month) or Basic.
- Growing volume: Pro or Platform, where the lower per-1,000 overage pays for itself once you send well above 10,000/month.
How Postmark compares (transactional, ~50K emails/month)
| Platform | Approx. monthly | Stream separation |
|---|---|---|
| Postmark (Pro + overage) | ~$70 (10K + 40K overage) | Yes (built-in) |
| Mailgun Foundation | $35 | Manual via subaccounts |
| SendGrid | ~$20-90 | Partial |
| Amazon SES | ~$5 | No |
Postmark's built-in transactional/broadcast stream separation and its reputation for inbox placement are the reasons teams pay a premium over raw SES.
Editor's Note: A SaaS sending ~80K transactional emails/month chose Postmark based on a 30-day A/B — Gmail inbox placement was 99.1% on Postmark vs 96.4% on the alternative for identical content. Re-checked July 2026: Postmark now has three tiers at the same 10,000-email base (Basic $15 / Pro $16.50 / Platform $18) where the higher tier buys a lower per-1,000 overage — so a high-volume sender should pick the tier by overage rate, not base price, since above 10,000/month the overage is what dominates the bill. — Rafal Fila, ShadowGen
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