- Price
- From $15/month for 10k emails
- Free plan
- Yes
- Setup
- Needs a developer
- Up and running
- An afternoon of code, plus up to a day for account approval before real users get emails.
What Postmark is for
Postmark sends the emails your app fires on its own (login codes, password resets, receipts) and its whole pitch is getting them to the inbox in seconds. It keeps these transactional emails apart from newsletters, in separate streams, so a bad campaign doesn't drag your login codes into spam.
How it plugs into your product
- 1Sign up with a company email (not Gmail) and add your sending domain with the DNS records Postmark shows.
- 2Request account approval: a person reviews it, usually in under 24 hours on weekdays. Until then you can only send to your own verified domains.
- 3Create a server token, keep it on your backend and send through the API or SMTP.
- 4Add a webhook for bounces so your app stops emailing dead addresses.
Does it fit your idea?
It fits if
- A SaaS where a login code stuck in spam means a lost sign-up, like passwordless login or two-factor codes.
- A B2B product sending 10,000 to 50,000 transactional emails a month that values support and delivery logs.
- You want product updates and transactional email in one account but kept on separate streams.
Look elsewhere if
- You are still testing the idea: the free plan is only 100 emails a month.
- You send hundreds of thousands of emails a month on a tight budget: Amazon SES or Resend cost less.
- You want to email cold or purchased lists: Postmark reviews accounts by hand to keep that out.
What people only find out after building
Read this before you build on it. Each item links to the official page that says so.
Until a person approves the account, you can't email any address outside the domains you verified, and link tracking stays off.
Official source: postmarkapp.comPlans include a monthly volume and charge for the extra: on Basic, each 1,000 emails past 10,000 costs $1.80, so a busy month raises the bill.
Official source: postmarkapp.comA dedicated IP starts at $50/month and is only offered from the Pro plan up to senders of 300,000 or more emails a month.
Official source: postmarkapp.comMessage history is kept 45 days by default; longer retention (up to 365 days) needs the Pro plan or higher.
Official source: postmarkapp.com
Price
From $15/month for 10k emails
100 emails a month to test, with no overage.
- Free tier
- 100/month
- Price for 50k emails/month
- $55/month (Basic, 50k tier)
- Setup
- REST API, SMTP and SDKs; account review
Checked on Oct 28, 2026 · official pricing
What it costs in practice
A SaaS sending 30,000 emails a month on Basic: $15 for the first 10,000 + 20 × $1.80 = about $51/month. Rough estimate; at 50,000 the next tier is $55.
Estimate from the official price. Check it before you decide.
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