Postmark review (2026): pricing, and why not for cold email
Postmark pricing verified: free 100 emails a month, then Basic $15, Pro $16.50 and Platform $18 for 10,000. Why its permission rules exclude cold email.
Postmark at a glance
Facts checked Oct 8, 2026 on postmarkapp.com
- Price
- From $15 per month for Basic at 10,000 emails; Pro $16.50; Platform $18; prices rise with monthly volume
- Pricing model
- Monthly plans priced by the emails you send and receive. The free Developer plan includes 100 emails a month, never expires and allows no overage. At 10,000 emails a month Basic is $15, Pro $16.50 and Platform $18; at 50,000 they are $55, $60.50 and $66; at 125,000 $115, $126.50 and $138; at 300,000 $245, $269.50 and $294; and at 1.5 million $775, $852.50 and $930. Extra emails cost $1.80, $1.30 and $1.20 per 1,000 on Basic, Pro and Platform at the lower volumes, falling to $1.70, $1.20 and $1.15 at the top. Pro adds inbound processing, retention up to 365 days and 10 domains; Platform makes domains, servers, streams and users unlimited. Dedicated IPs start at $50 a month per IP for senders of 300,000 emails a month on Pro or higher, custom retention starts at $5 a month, and DMARC monitoring at $14 a month per domain.
- Minimum order
- None
- Free trial
- Free Developer plan of 100 emails a month that never expires; your first purchase is refundable within 30 days if you are not satisfied
- Billing
- Monthly, renewing until cancelled; cancellations and downgrades take effect at the end of the billing period, and unused emails expire at month end
- Setup time
- Minutes for a server token, plus DKIM and Return-Path DNS records for each sending domain
- DNS setup
- You add Postmark's DKIM and Return-Path records at your DNS host
- IP location
- Shared, vetted IP pools, with broadcast mail kept apart from transactional; dedicated IPs from $50 a month at 300,000 emails
- Warmup
- Dedicated IPs are fully managed; there are no mailboxes to warm
- Replacements
- Not applicable
- Domains
- Bring your own: 5 on Basic, 10 on Pro, unlimited on Platform
- Integrations
- REST API, SMTP, Message streams, Inbound email webhooks (Pro and up), Event webhooks, Templates, Official SDKs
Best for: Product teams that want fast, reliable transactional email, plus a separate stream for opted-in broadcasts, on clean shared IPs.
Not for: Cold outreach of any kind, or anyone sending to purchased, rented or scraped lists.
Postmark pricing
Published prices as of Oct 8, 2026 from their pricing page. Prices change; check before you buy.
| Plan | Price | What you get | Notes |
|---|---|---|---|
| Developer | $0 | 100 emails a month that never expire | No overage allowed |
| Basic | $15 a month | 10,000 emails, 5 domains, 4 users, 45-day retention | Extra $1.80 per 1,000; no inbound |
| Pro | $16.50 a month | 10,000 emails, 10 domains, inbound, retention to 365 days | Extra $1.30 per 1,000 |
| Platform | $18 a month | 10,000 emails, unlimited domains, servers and users | Extra $1.20 per 1,000 |
| Dedicated IP | From $50 a month | Managed IP for 300,000+ emails a month | Pro or higher |
- Developer$0
100 emails a month that never expire
No overage allowed
- Basic$15 a month
10,000 emails, 5 domains, 4 users, 45-day retention
Extra $1.80 per 1,000; no inbound
- Pro$16.50 a month
10,000 emails, 10 domains, inbound, retention to 365 days
Extra $1.30 per 1,000
- Platform$18 a month
10,000 emails, unlimited domains, servers and users
Extra $1.20 per 1,000
- Dedicated IPFrom $50 a month
Managed IP for 300,000+ emails a month
Pro or higher
What Postmark does well
- Every price is on the page, from $15 for 10,000 emails up to 1.5 million, and the free Developer plan never expires.
- Transactional and broadcast mail travel on separate message streams, so a newsletter cannot drag down your password resets.
- Your first purchase is refundable within 30 days if you are not satisfied, and cancellations simply take effect at the end of the period.
- Strict limits on complaints and bounces keep the shared IP pools clean, which is the reason teams pay for it.
- Inbound processing, retention up to 365 days, and unlimited domains and users on the higher plans, with DMARC monitoring as an add-on.
Where it falls short
- The terms allow only permission-based lists, ban purchased or rented ones, and require complaint rates under 0.1% and bounces under 10%, which rules out cold email.
- It turns away whole categories of sender, including affiliate marketing, list brokers and make-money-online offers.
- No mailbox: replies need inbound processing on Pro or higher, and there is no Google or Microsoft reputation behind the mail.
- Basic leaves out inbound processing and caps you at 5 domains and 4 users.
- Unused emails expire at the end of each month, and downgrades only take effect when the billing period ends.
PureMail score for Postmark
Five criteria, 1 to 5 each, scored on what Postmark publishes. How we score.
3.4 / 5
- Price and value
- 4 / 5
- Setup and control
- 4 / 5
- Deliverability foundations
- 4 / 5
- Terms and support
- 4 / 5
- Fit for cold email
- 1 / 5
Published prices, effective cost per mailbox at 10, 30 and 100, no hidden fees. Unpublished pricing scores 1.
Time to first send, DNS automation, domain options, sequencer connection, ownership of domains and mailboxes.
Mailbox type and its inherited reputation, IP policy, warmup path, replacement policy for blocked mailboxes.
Minimum order, billing flexibility, refund and cancellation terms, support channel and hours.
Built and permitted for outbound, integrations with sequencers, warmup and verification tools.
What Postmark is
Postmark is a transactional email service, run today by ActiveCampaign, for the mail an application has to deliver quickly: receipts, password resets, sign-in links and notifications. Its terms are unusually strict, and that is the product. Postmark limits who may send, how many complaints an account may draw and which industries it will serve, which keeps its shared IPs clean and its delivery fast. The same strictness is why it has no place in a cold email stack.
How Postmark’s pricing works
Pricing follows the number of emails you send and receive each month, and every step is published. The free Developer plan covers 100 emails a month for as long as you like, with no overage. At 10,000 emails Basic costs $15, Pro $16.50 and Platform $18. At 50,000 the three cost $55, $60.50 and $66, at 300,000 they cost $245, $269.50 and $294, and at 1.5 million $775, $852.50 and $930. Extra emails cost $1.80, $1.30 and $1.20 per 1,000 at the lower volumes.
The plans differ in what surrounds the sending. Basic has 5 custom domains, 4 users and 45 days of retention, and no inbound processing. Pro adds inbound processing, retention up to 365 days and 10 domains. Platform makes domains, servers, streams and users unlimited. Dedicated IPs cost from $50 a month per IP on Pro or higher, for senders of at least 300,000 emails a month, and DMARC monitoring is a $14-a-month add-on per domain. Billing renews monthly until you cancel, with cancellations and downgrades taking effect at the end of the period, unused emails expiring at month end, and a refund on your first purchase within 30 days if the service disappoints.
Message streams and broadcasts
Postmark separates mail into message streams. Transactional streams carry the messages a user triggers, and broadcast streams carry opted-in newsletters and announcements, kept apart so a campaign that draws complaints cannot slow a password reset. Broadcast streams add an unsubscribe link and the one-click unsubscribe headers Gmail and Yahoo require. Higher plans allow more streams and servers, Platform makes them unlimited, and every broadcast stream assumes the recipients asked to hear from you.
Why Postmark is the wrong tool for cold email
The terms leave no room. Every list must be a permission-based subscription, purchased or rented lists are prohibited, unsubscribe requests must be honoured, and an account must keep its spam complaint rate below 0.1% and its bounce rate below 10%, or Postmark may pause or cancel it. The terms also name businesses it may refuse outright, including affiliate marketing, list brokers and make-money-online offers. Cold email is sent to people who did not opt in, so it fails the first rule before the rates come into it.
There is a product reason too. Postmark sends from a domain you verify, not from a mailbox, so replies need inbound processing on Pro or higher and code of your own, and no Google or Microsoft account lends the message its reputation.
What to use instead
Send outreach from real mailboxes at a real provider, warmed up, spread across several domains, connected to a sequencer and held to modest daily volumes. Every tool in our inbox provider category works that way, and it is what PureMail’s ready-to-send Google Workspace and Microsoft 365 inboxes are built for. Keep Postmark for the mail your product sends to its own users.
Postmark alternatives
For transactional email, SendGrid offers a 60-day trial and dedicated IPs on its Pro plan. Mailgun adds an EU sending region and a dedicated IP on Scale. Mailtrap pairs its sending API with a testing sandbox. The SMTP relay category compares them.
Who Postmark is for
Product teams that need transactional email to arrive fast and reliably, and want a separate stream for opted-in broadcasts on clean shared IPs. For cold outreach, look elsewhere.
Postmark alternatives we have reviewed
SendGrid
Twilio's transactional email API and SMTP relay: 60-day free trial, Essentials from $19.95 a month, Pro from $89.95 with dedicated IPs. Not for cold email.
Mailgun
Sinch's email API and SMTP relay: free 100 emails a day, Basic $15 a month, Foundation $35 for 50,000, Scale from $90 with a dedicated IP. Not for cold email.
Mailtrap
Transactional email API and SMTP service from Railsware: 4,000 emails a month free, then $15 for 10,000 up to $1,250 for 2.5 million; unsolicited email barred.
Postmark FAQ
How much does Postmark cost?
As of 8 October 2026, the free Developer plan includes 100 emails a month. At 10,000 emails a month Basic costs $15, Pro $16.50 and Platform $18; at 50,000 they cost $55, $60.50 and $66; and at 1.5 million $775, $852.50 and $930. Extra emails cost $1.15 to $1.80 per 1,000 depending on plan and volume, and dedicated IPs start at $50 a month.
Can I use Postmark for cold email?
No. Postmark's terms allow only permission-based lists, prohibit purchased or rented ones, and require a spam complaint rate under 0.1% and a bounce rate under 10%, with accounts paused or cancelled when they break those rules. Cold outreach to people who never opted in is what those rules exist to keep out. Use real mailboxes and a sequencer for outreach.
Does Postmark have a free plan or trial?
Every account starts on the free Developer plan, which includes 100 emails a month, never expires and allows no overage; it is meant for testing an integration. If you upgrade and are not satisfied, Postmark refunds your first purchase within 30 days of buying it. Later purchases are not refundable.
What are Postmark message streams?
Streams separate kinds of email inside one server: transactional streams for receipts and password resets, and broadcast streams for opted-in newsletters and announcements, kept apart so one cannot harm the other. Broadcast streams add an unsubscribe link and one-click unsubscribe headers automatically. Higher plans allow more streams and servers, and Platform makes them unlimited.
Does Postmark offer dedicated IPs?
Yes, as a managed add-on from $50 a month per IP, available on Pro or higher to senders of 300,000 emails a month or more. Below that volume everyone sends from Postmark's shared, vetted pools, which its complaint and bounce limits are designed to keep clean.
Sources
Disclosure: PureMail sells Google Workspace and Microsoft 365 inboxes and competes with some tools in this directory. We do not assign star ratings and we do not take payment for placement. Spotted an error? Email [email protected] and we will correct it within a week.
More tools in the directory
Mailgun
Sinch's email API and SMTP relay: free 100 emails a day, Basic $15 a month, Foundation $35 for 50,000, Scale from $90 with a dedicated IP. Not for cold email.
Mailtrap
Transactional email API and SMTP service from Railsware: 4,000 emails a month free, then $15 for 10,000 up to $1,250 for 2.5 million; unsolicited email barred.
SendGrid
Twilio's transactional email API and SMTP relay: 60-day free trial, Essentials from $19.95 a month, Pro from $89.95 with dedicated IPs. Not for cold email.
Setup guides from PureMail
How to Set Up SPF, DKIM and DMARC for Cold Email Domains
Step-by-step SPF, DKIM and DMARC setup for cold email domains on Google Workspace and Microsoft 365, plus the mistakes that quietly kill deliverability.