Postmark pricing, price hikes and cheaper alternatives
Postmark (postmarkapp.com) is a email API. Volume tiers on Basic, Pro and Platform, plus overage. Free plan: 100 emails/mo (Free plan).
What Postmark costs
- 10k emails / month: $15/mo
- 50k emails / month: $55/mo
- 100k emails / month: $115/mo
- 500k emails / month: $455/mo
- 1M emails / month: $775/mo
Plan compared: Basic plan. Cheapest paid plan (plus overage when that's cheaper) covering the monthly volume, billed monthly. Contact-based pricing assumes 4 emails per contact.
Postmark price hikes
- Postmark raised prices 15–50% · Jan 3, 2023
New subscriptions and plan changes moved to higher prices; existing plans were honored.
Cheaper alternatives to Postmark
At 100k emails/mo, Postmark costs $115/mo. 7 email APIs cost less:
- Amazon SES: $10/mo (À la carte, $0.10 per 1k (any account can switch to it))
- SendGrid: $34.95/mo (Essentials (Pro above 100k))
- Resend: $35/mo (Pro (Scale above 100k))
- MailerSend: $68/mo (Hobby + overage, then Starter)
- Mailgun: $75/mo (Basic, Foundation, then Scale)
- Brevo: $82/mo (Starter (Standard 500k, Professional 1M))
- Plunk: $100/mo (Pay as you go)
Postmark alternatives: 7 cheaper email APIs compared, at every size.
Every change we logged
- Aug 6, 2025 · Price cut: Pro and Platform became available from the 10k tier.
- Jul 5, 2023 · Repriced: Prepaid credit packs discontinued in favour of subscriptions; unused credits became account credit.
- Jan 3, 2023 · Price increase: New subscriptions and plan changes moved to higher prices; existing plans were honored.
Sources
Pricing page: postmarkapp.com/pricing. Prices last checked Oct 16, 2026. Postmark has no 100k tier; the 125k tier ($115) is cheaper than 50k plus overage.