Email API pricing, vendors side by side
What sending transactional email costs at the email APIs we track: plan fees, included emails and overage per 1,000, read off each vendor's own page.
Price one workload across every email API vendor
Starts at 100,000 emails a month. Change the numbers and the table re-sorts, cheapest first.
| Vendor | Estimated month | Cheapest listed option | What is not priced | Source |
|---|---|---|---|---|
| AWS | $10.00 | Pay as you go: SES outbound email (a la carte, no plan) | Sourcechecked 2026-10-25 | |
| Resend | $65.00 | Pro ($20.00 a month): Emails beyond the Pro plan | Sourcechecked 2026-10-25 | |
| Twilio SendGrid | $89.95 | Pro ($89.95 a month): Emails included in Pro 100k | Sourcechecked 2026-10-25 | |
| Mailgun | $90.00 | Scale ($90.00 a month): Extra emails on Scale | Sourcechecked 2026-10-25 | |
| Postmark | $126.00 | Platform ($18.00 a month): Extra emails on Platform | Sourcechecked 2026-10-25 |
List prices in USD before tax and discounts. Each vendor is priced on its cheapest plan that lists a rate for every line, and the vendor's own region and tier assumptions apply (see each vendor page). "From" means some lines have no listed price, so the real bill is higher.
The rates behind the estimate
The published rate for each line of the workload, with the free or included amount. Each row links to the vendor's own pricing page.
| Vendor | Rate | Free or included | Plan | Source |
|---|---|---|---|---|
| AWS | SES outbound email (a la carte, no plan)$0.10 per 1,000 emails | None | All | Sourcechecked 2026-10-25 |
| SES outbound email on the Essentials plan$0.16 per 1,000 emails, falling with volume | None | SES Essentials | Sourcechecked 2026-10-25 | |
| Resend | Emails beyond the Pro plan$0.90 per 1,000 emails | First 50,000 emails included | Pro | Sourcechecked 2026-10-25 |
| Emails beyond the Scale plan (100k step)$0.90 per 1,000 emails | First 100,000 emails included | Scale | Sourcechecked 2026-10-25 | |
| Free plan emailsincluded | Up to 3,000 emails, no overage listed | Free | Sourcechecked 2026-10-25 | |
| Postmark | Extra emails on Basic$1.80 per 1,000 emails | First 10,000 emails included | Basic | Sourcechecked 2026-10-25 |
| Extra emails on Pro$1.30 per 1,000 emails | First 10,000 emails included | Pro | Sourcechecked 2026-10-25 | |
| Extra emails on Platform$1.20 per 1,000 emails | First 10,000 emails included | Platform | Sourcechecked 2026-10-25 | |
| Twilio SendGrid | Emails included in Essentials 50kincluded | Up to 50,000 emails, no overage listed | Essentials | Sourcechecked 2026-10-25 |
| Emails included in Pro 100kincluded | Up to 100,000 emails, no overage listed | Pro | Sourcechecked 2026-10-25 | |
| Mailgun | Extra emails on Basic$1.80 per 1,000 emails | First 10,000 emails included | Basic | Sourcechecked 2026-10-25 |
| Extra emails on Foundation$1.30 per 1,000 emails | First 50,000 emails included | Foundation | Sourcechecked 2026-10-25 | |
| Extra emails on Scale$1.10 per 1,000 emails | First 100,000 emails included | Scale | Sourcechecked 2026-10-25 |
How to choose email API on price
Plans are volume steps
Free tiers are small
Deliverability costs extra
Email API pricing questions
Which email API vendor is cheapest?
For 100,000 emails a month, AWS comes out lowest at about $10.00 a month on list prices, and Postmark highest at about $126.00, checked 2026-10-25. A different workload can change the order, so enter your own numbers in the estimator.
How is the estimate worked out?
Each vendor is priced on its cheapest plan that lists a rate for every line of the workload: the plan fee plus each usage line, after any free or included amount. A plan's monthly minimum counts as a floor. Volume tiers are applied in order. Taxes, discounts and committed-use deals are left out.
How current are these prices?
Every rate was read off the vendor's own pricing page on 2026-10-25 and links to it. Prices change often: check the vendor's page before you commit, and tell us if a number here is out of date.
Vendor pages and other categories
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