Does Postmark have a free plan?

No free plan is listed on the vendor's pricing page. Postmark is sold on usage-based pricing.

What are the main drawbacks of Postmark?

The trade-offs we noted: Strict about what counts as transactional; Costs more per message than bulk providers; Not intended for marketing campaigns.

When should you not use Postmark?

Skip Postmark if: You send newsletters or campaigns — Postmark is built for transactional streams; Your volume is under 300,000/month and you need a dedicated IP: it is only offered above that, from $50/month; You need long retention on the base tier: Basic keeps 45 days, longer retention is Pro or a $5/month add-on.

Marketing

Postmark

Reliable transactional email delivery.

What it is

Postmark focuses narrowly on transactional email and is known for delivery speed and inbox placement, keeping marketing mail on separate infrastructure. Keeping transactional and bulk mail on separate infrastructure is the reason deliverability holds up, and it is also the constraint: this is not where you send campaigns. Message streams make that separation explicit rather than optional.

Postmark pricing

Postmark lists 1 plan and none of them carries a monthly charge.

Postmark plans and published prices, taken from the vendor’s pricing page.
Plan	Price	What the vendor’s page says
Free	$0/mo	Free: 100 emails/month

Prices read from the vendor's own pricing page on 2026-09-08. Vendors change plans without notice — check the source before you budget. Source

Key features

Separate message streams
Keeps transactional and broadcast mail on distinct sending reputations.
Delivery analytics
Reports bounces, opens and time-to-inbox per message.
Inbound parsing
Turns replies into structured webhooks for the application to process.

Strengths and trade-offs

What works well

Reputation for reliable inbox delivery
Separate streams for transactional and broadcast
Detailed delivery diagnostics

Where it falls short

Strict about what counts as transactional
Costs more per message than bulk providers
Not intended for marketing campaigns

Who it is for

Teams where receipts, resets and alerts must arrive.

Pick it or skip it

Pick Postmark if

Transactional email (receipts, password resets) where deliverability and speed matter more than marketing features
Developers testing an integration: 100 emails a month are free
Products sending around 10,000 emails a month for $15 with 5 custom domains

Skip it if

You send newsletters or campaigns — Postmark is built for transactional streams
Your volume is under 300,000/month and you need a dedicated IP: it is only offered above that, from $50/month
You need long retention on the base tier: Basic keeps 45 days, longer retention is Pro or a $5/month add-on

Our verdict

If delivery reliability matters more than price per message, this is the one to beat.

Frequently asked questions

Does Postmark have a free plan?: No free plan is listed on the vendor's pricing page. Postmark is sold on usage-based pricing.
Who is Postmark best for?: Teams where receipts, resets and alerts must arrive.
What are the main drawbacks of Postmark?: The trade-offs we noted: Strict about what counts as transactional; Costs more per message than bulk providers; Not intended for marketing campaigns.
When should you not use Postmark?: Skip Postmark if: You send newsletters or campaigns — Postmark is built for transactional streams; Your volume is under 300,000/month and you need a dedicated IP: it is only offered above that, from $50/month; You need long retention on the base tier: Basic keeps 45 days, longer retention is Pro or a $5/month add-on.

What we checked

Public APIOffers a documented API you can build against.Yes
Mobile appHas a native app for iOS or Android, not just a mobile website.No
Open source / self-hostableSource is open and the tool can be run on your own infrastructure.No
SSO (SAML)Supports SAML single sign-on on at least one plan.Yes

“Not checked” means exactly that — we have not verified it, and we do not guess.

Evidence and freshness

Status: Vendor pricing page verifiedReviewed: 2026-09-08

Postmark — Pricing ↗
Checked 2026-09-08 · Supports: Free: 100 emails/month, Basic $15/month for 10,000 emails, overage $1.80 per 1,000, 5 domains, 45-day retention, Pro $16.50/month, $1.30 per 1,000, 10 domains, retention up to 365 days, inbound, Platform $18/month, $1.20 per 1,000, unlimited domains and users, dedicated IP from $50/month per IP at 300,000+ emails/month; custom retention from $5/month; DMARC monitoring from $14/month per domain, unused emails do not roll over

Limit: Vendor pricing page was reviewed by an editor on this date; this record is not a ToolCompare benchmark. Prices and limits change.

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