Postmark
Dev & InfrastructureOur verdict
Transactional email API and SMTP built for fast, reliable delivery. Free developer plan; paid from $15/mo.
- Best for:
- Developers and SaaS teams who need password resets, receipts and alerts delivered fast, through a REST API or SMTP.
- Skip it if:
- You mainly send marketing newsletters; Postmark is built for transactional email first.
Watch-outs
The free Developer plan is 100 emails a month with no overages, so it's for testing, not production.
Source: postmarkapp.com/pricing · checked
Inbound email processing starts on Pro, not Basic.
Source: postmarkapp.com/pricing · checked
Dedicated IPs start at $50 a month per IP and need Pro or higher and 300,000+ emails a month.
Source: postmarkapp.com/pricing · checked
At a glance
Free plan
Yes · 100 emails a month, no overages, never expires
Source: postmarkapp.com/pricing · checked
Pricing
| Plan | Price (USD) | |
|---|---|---|
| Free | Free | 100 emails a month, REST API and SMTP, templates, up to 10 domains |
| Basic | $15per month | 10,000 emails, extra $1.80 per 1,000, 45-day retention, 5 domains, 4 users |
| Pro | $16.50per month | 10,000 emails, extra $1.30 per 1,000, inbound email, custom retention, 10 domains |
| Platform | $18per month | 10,000 emails, extra $1.20 per 1,000, inbound email, unlimited domains and users |
Pricing checked on · Postmark pricing page
AI & integrations
Public API · API docs
Source: postmarkapp.com/pricing · checked
No exclusive perk right now; you get the standard offer.
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FAQs
Is Postmark free?
Yes. The free Developer plan includes 100 emails a month with no overages, and it never expires. It's meant for testing rather than production sending.
Source: postmarkapp.com/pricing
How much does Postmark cost?
For 10,000 emails a month, billed monthly, Basic is $15, Pro is $16.50 and Platform is $18. Extra emails cost $1.80, $1.30 or $1.20 per 1,000 depending on the plan.
Source: postmarkapp.com/pricing
Does Postmark support inbound email?
Yes, but only on Pro and Platform. Basic doesn't include inbound email processing.
Source: postmarkapp.com/pricing
Can I send with Postmark over SMTP or an API?
Both. You can send through Postmark's REST API or over SMTP, and both are included on every plan, the free one too.
Is Postmark secure?
Postmark hosts its servers in SOC 2 certified data centres, and outbound email uses opportunistic TLS so it's encrypted in transit. Postmark also supports SPF, DKIM and DMARC.
Sources: postmarkapp.com/security, postmarkapp.com/dpa