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Proprietary vs Proprietary

Postmark vs Amazon SES: Which One Should You Choose in 1970?

Postmark is a proprietary Transactional Email API tool priced as per-email volume, no overage surprises, starting at $15/mo (10,000 emails). Amazon SES is proprietary, priced as pay-as-you-go per 1,000 emails, starting at $0.10 per 1,000 emails.

Quick verdict

Choose Postmark for
Postmarkbest-in-class transactional deliverability with separate message streams
Choose Amazon SES for
Amazon SESthe lowest per-email price of any major provider

Postmark vs Amazon SES: feature comparison

FeaturePostmarkProprietaryAmazon SESProprietary
Open-Source AvailableNoNo
Self-HostableNoNo
Self-Hosting DifficultyN/AN/A
Pricing ModelPer-email volume, no overage surprisesPay-as-you-go per 1,000 emails
Starting Price$15/mo (10,000 emails)$0.10 per 1,000 emails
Free TierFree trial: 100 test emails/mo3,000 message charges/mo for the first 12 months on a new AWS account
GitHub StarsN/AN/A

Pricing takeaway

Postmark starts at $15/mo (10,000 emails) (free trial: 100 test emails/mo). Amazon SES starts at $0.10 per 1,000 emails (3,000 message charges/mo for the first 12 months on a new AWS account).

Postmark
Per-email volume, no overage surprises. Starts at $15/mo (10,000 emails). Free trial: 100 test emails/mo.Full Postmark pricing breakdown
Amazon SES
Pay-as-you-go per 1,000 emails. Starts at $0.10 per 1,000 emails. 3,000 message charges/mo for the first 12 months on a new AWS account.Full Amazon SES pricing breakdown

Pros and cons

Pros

  • Best-in-class transactional deliverability with separate message streams
  • Simple per-email pricing with no feature gating on the API
  • Detailed activity log for every message, which makes debugging delivery fast

Cons

  • No production free tier at all
  • Almost no marketing campaign tooling
  • Per-email cost is high next to Amazon SES or Resend at volume

Pros

  • The lowest per-email price of any major provider
  • Scales to millions of messages with regions, dedicated IPs and reputation dashboards
  • Wires into IAM, CloudWatch and the rest of AWS without extra glue

Cons

  • Onboarding is console-and-DNS first: leaving the sandbox takes setup and a support request
  • Deliverability tooling is basic compared with SendGrid or Postmark
  • Billing arrives as one line in a larger AWS invoice, which is easy to lose track of

Postmark vs Amazon SES: FAQ

Is Amazon SES a good alternative to Postmark?

Postmark is a proprietary Transactional Email API tool priced as per-email volume, no overage surprises, starting at $15/mo (10,000 emails). Amazon SES is proprietary, priced as pay-as-you-go per 1,000 emails, starting at $0.10 per 1,000 emails.

Which is cheaper, Postmark or Amazon SES?

Postmark starts at $15/mo (10,000 emails) (free trial: 100 test emails/mo). Amazon SES starts at $0.10 per 1,000 emails (3,000 message charges/mo for the first 12 months on a new AWS account).

Is Postmark or Amazon SES open source?

Postmark is proprietary. Amazon SES is proprietary.

Can I self-host Postmark or Amazon SES?

Postmark cannot be self-hosted. Amazon SES cannot be self-hosted.

Do Postmark and Amazon SES have a free tier?

Postmark: Free trial: 100 test emails/mo. Amazon SES: 3,000 message charges/mo for the first 12 months on a new AWS account.