How much does Postmark cost in 2026? Pricing breakdown
Quick Answer: Postmark: Developer free (100/mo), 10K $15/mo, 50K $55/mo, 100K $115/mo, 300K $305/mo. Transactional + broadcast streams on all plans. Dedicated IP $50/mo on 300K+.
Postmark Pricing (as of April 2026)
| Plan | Monthly Price | Emails Included |
|---|---|---|
| Developer | Free | 100 emails/month |
| 10K | $15/month | 10,000 emails |
| 50K | $55/month | 50,000 emails |
| 100K | $115/month | 100,000 emails |
| 300K | $305/month | 300,000 emails |
| Higher volume | Scaled pricing | 500K+ |
All plans include transactional and broadcast streams, templates, API access, webhooks, and the 45-day message log. Dedicated IPs are $50/month each on plans of 300K and above.
Plan Selection by Use Case
| Use Case | Recommended Plan | Monthly Cost |
|---|---|---|
| CI/dev testing | Developer Free | $0 |
| Small SaaS | 10K | $15 |
| Growing SaaS | 50K or 100K | $55-$115 |
| High-volume SaaS | 300K+ | $305+ |
Transactional Email Comparison (50K emails/month)
| Platform | Monthly Cost | Stream Separation |
|---|---|---|
| Postmark 50K | $55 | Yes (built-in) |
| Mailgun Growth | $35 | No (manual via subaccounts) |
| SendGrid Pro | $89 | Partial |
| Brevo Business | $65 | No (single stream) |
| Amazon SES | ~$5 | No |
What''s Not Included
- Marketing automation (list management, drip campaigns, segmentation) — use ActiveCampaign or another tool
- SMS — not supported
- A/B testing of broadcast emails — limited functionality
Editor''s Note: A SaaS sending ~80K transactional emails/month landed on the Postmark 100K plan at $115/month. We had previously evaluated Mailgun Scale at $90/month. The $25/month premium for Postmark was worth it based on a 30-day A/B: Gmail inbox placement was 99.1% on Postmark vs 96.4% on Mailgun for the same content and volume. For the sibling app that needed inbound parsing, we stayed on Mailgun.
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