Two transactional email providers, compared on price, features and ratings, so you can pick fast.
Updated September 2026
THE VERDICT
AWS SES wins on price and deliverability. Postmark wins on developer experience and reviews.
AWS SES starts at $0.10 versus Postmark's $10. Postmark rates higher with developers (4.6 vs 4.2 on G2). Pick based on volume and team, and the scorecard below breaks down where each one leads.
Winner cells are tinted, green where AWS SES leads, violet where Postmark does.
FAQ
AWS SES starts at $0.10 versus Postmark's $10. Because pricing models differ by tier, the cheaper option depends on your monthly volume, so compare the pricing rows in the scorecard above.
Amazon SES is pay-as-you-go with no fixed monthly plan. Outbound email through shared sending costs $0.10 per 1,000 emails, or $0.0001 per message, and is billed per recipient rather than per message. Additional charges apply for outgoing attachment data, dedicated IP addresses, and inbound email processing.
Postmark offers a free developer plan that includes 100 emails per month. It does not require a credit card and does not expire, but sending stops once the 100 email limit is reached. This tier is intended for testing and development rather than production traffic.
Yes. Many teams route different message types through different providers or fail over between them. Courier lets you send through both behind a single API and switch providers without changing your code.
Why not both?
Use both behind one API.
Route AWS SES, Postmark, or both, and switch providers without changing your code. Courier sits in front of every channel.
Pricing, plans and feature availability as of September 2026 and may change. Ratings are aggregated from public review platforms. Postmark is an ActiveCampaign product.