Postmark's pricing page
Captured from postmarkapp.com. Pricing changes often, so confirm the current numbers on the live page.
Buying shortcut
Which Postmark plan should you choose?
Start here
Free
Testing integration and deliverability. It is the first tier to check when you only need the core Postmark workflow. Watch for: No overages
Public price
$0/mo
100 emails/month, no overages.
Main upgrade
Basic
Solo developers and smaller teams. Inspect this tier when the lower tier starts blocking reporting, automation, collaboration, or support needs. Watch for: No inbound processing listed in the Basic card
Public price
$15/mo
10,000 emails/month; extra emails at $1.80 per 1,000.
High-volume or advanced
Platform
Agencies and larger teams. Treat this as the serious-operations tier, especially if the first two plans leave key limits or add-ons unresolved. Watch for: Does not replace lifecycle campaign tooling
Public price
$18/mo
10,000 emails/month; extra emails at $1.20 per 1,000.
What Postmark costs at your size
The cheapest plan that covers each size, from Postmark's published pricing. Check the sources below for the date it was verified.
Cost scenarios
Pricing pages show the entry point. These scenarios show what the plan means in real buying situations.
App sending password resets and receipts
Postmark: Basic or Pro depending on inbound and retention needs. Sequenzy: Better if marketing lifecycle workflows are also needed. Postmark is excellent for transactional email. Sequenzy is broader for SaaS lifecycle campaigns.
SaaS lifecycle email program
Postmark: Delivery is covered, but campaign workflow is separate. Sequenzy: Lifecycle workflows and sending in one platform. Sequenzy is better if you want onboarding and retention automation, not just transactional delivery.
Agency managing many client domains
Postmark: Platform tier starts with unlimited custom sending domains. Sequenzy: Not primarily an agency transactional email tool. Postmark Platform is better for agency-style transactional sending.
What to watch for
Free is only for testing and allows no overages.
Postmark is not a full marketing automation platform.
Inbound processing and longer retention require higher paid plans.
Costs beyond the headline price
- Sending past a tier limit does not stop delivery; overages are added to the next monthly bill at the plan overage rate, for example $1.80 per 1,000 extra emails on Basic.
- Dedicated IPs start at $50/month per IP and require sending 300,000 or more emails per month on a Pro plan or higher.
- Custom activity retention starts at $5/month and is only available on Pro plans or higher.
- DMARC monitoring starts at $14/month per domain.
- Postmark offers no annual plans and unused emails do not roll over to the next month.
Postmark pricing is easy to model
Postmark publishes clear starting volumes and overage rates. That makes it easy for engineers to budget transactional email without guessing how list size affects the bill.
The tradeoff is scope. Postmark handles delivery well, but it does not replace the planning, generation, segmentation, and lifecycle workflow layer that SaaS teams need for onboarding and retention.
The main pricing choice is not whether Postmark is expensive. It is whether transactional delivery is the whole job. Basic is attractive when you need dependable delivery for receipts, password resets, notifications, and other application email. Pro becomes more relevant when inbound processing, longer retention, and more operational visibility matter. Platform is a different buyer: agencies or teams managing many domains and client-like sending environments.
If your team is trying to improve activation or retention, the Postmark bill is only one part of the cost. You also need message strategy, audience rules, event triggers, copy, QA, and reporting that maps to product behavior. The Postmark alternatives guide and the Postmark comparison are useful companion pages because they separate delivery needs from lifecycle marketing needs.
Postmark vs Sequenzy
Postmark is better if your main need is reliable transactional delivery. Sequenzy is better if the problem is lifecycle marketing for a SaaS product.
A common setup is to use an infrastructure product for strict transactional mail and a lifecycle platform for onboarding, expansion, and retention. That split can work well, but it should be an intentional architecture choice rather than an accidental result of choosing the lowest transactional email plan.
Postmark vs Sequenzy
How Postmark compares with Sequenzy, which bills on emails sent rather than contact count.
How Sequenzy prices the same volume
Sequenzy price per 1k emails
$0.82 / 1k at $49/mo for 60k emails
Verdict
Postmark is one of the clearest transactional email tools to price. It is not trying to be a SaaS lifecycle marketing suite, so Sequenzy is a better fit when the email program includes onboarding, activation, retention, and revenue workflows.
FAQ
Sources checked · Oct 8, 2026
Written by Nic Polotnianko, co-founder of Sequenzy, which appears in this comparison. How we compare tools