Data note
Resend vs Postmark: What Transactional Email Costs in 2026
Resend and Postmark prices side by side as of 2026-10-25, including overage rates, add-on costs, and what 50,000 emails actually bills.
Resend is cheaper at every volume above a few thousand emails: $20/month for 50,000 emails with $0.90 per extra 1,000, against Postmark's $15/month for 10,000 emails with $1.80 per extra 1,000. At 50,000 emails a month that is $20 versus roughly $87 at Postmark's published overage rate.
- Resend Free: 3,000 emails per month, capped at 100 emails per day, $0 (checked 2026-10-25).
- Resend Pro: $20/month for 50,000 emails, then $0.90 per extra 1,000 (checked 2026-10-25).
- Postmark Basic: $15/month for 10,000 emails, then $1.80 per extra 1,000 (checked 2026-10-25).
- Postmark's free developer plan is 100 emails per month and does not expire (checked 2026-10-25).
- 50,000 emails a month costs $20 on Resend Pro and about $87 on Postmark Basic at its $1.80 overage rate (calculated 2026-10-25).
- Resend's dedicated IP add-on is $30/month; Postmark's dedicated IPs start at $50/month and require 300,000 emails per month (checked 2026-10-25).
2 primary sources · If this is out of date, tell us and we will re-measure.
On this page
Both Resend and Postmark sell the same thing — a reliable API that puts a password reset in an inbox instead of a spam folder — and both price it per email. The plans diverge sharply once you leave the entry tier.
Here are the published numbers as of 2026-10-25, and what the same monthly volume bills on each.
Entry tiers, side by side
| Resend | Postmark | |
|---|---|---|
| Free plan | 3,000 emails/month, 100/day | 100 emails/month, no expiry |
| First paid tier | $20/month, 50,000 emails | $15/month, 10,000 emails |
| Overage rate | $0.90 per extra 1,000 | $1.80 per extra 1,000 |
| Next tier up | $90/month, 100,000 emails | $16.50/month, $1.30 per extra 1,000 |
| Volume ceiling | 100,000 included before overage | Listed tiers step to $1.20 per extra 1,000 |
| Dedicated IP | $30/month add-on | From $50/month, requires 300,000 emails/month |
| Extra domains | $20/month for 100 more | Included |
What the same volume actually bills
| Emails per month | Resend | Postmark (at Basic overage) |
|---|---|---|
| 100 | $0 | $0 |
| 3,000 | $0 | $15 |
| 10,000 | $20 | $15 |
| 25,000 | $20 | $42 |
| 50,000 | $20 | $87 |
| 100,000 | $90 | $177 |
The Postmark column is arithmetic on the published Basic rate: $15 plus $1.80 for every additional 1,000. Postmark's pricing slider shows the per-1,000 rate dropping to $1.30 and then $1.20 at higher volumes, so the real 100,000-email bill sits below that $177 figure. Resend's column is its published plan price, with $0.90 per 1,000 only once a plan's included volume is used up.
How we measured it
Both pricing pages were loaded on 2026-10-25 and the numbers read out of the plan tables, not the marketing copy. Overage arithmetic is plain multiplication; no benchmark was run and no discount was assumed. Where a vendor answers a pricing question in its FAQ rather than in the table — Postmark's "no tier between 100 and 10,000", Resend's "no monthly-to-annual switch" — that answer is quoted rather than restated as a number.
What changes in practice
The crossover is narrow and early. Postmark is cheaper below roughly 13,000 emails a month, and above that Resend's included volume wins until Postmark's volume discounts close the gap. A product sending 10,000 emails a month — password resets and receipts for a few thousand users — is paying $15 either way, so price is not the deciding factor at that size.
The expensive part of email is not the per-email rate. It is deliverability: shared IP reputation, the receiving provider's filtering, and the first week after you switch providers. Postmark's reputation is the reason people pay its overage rates, and Resend's shared IP pools are the reason its entry tier is cheap. Neither vendor publishes a deliverability number you can compare, so this is the one line in the table where the price is not the whole story.
Watch the add-ons. A dedicated IP costs $30/month on Resend and starts at $50/month on Postmark, and Postmark only sells it to accounts sending 300,000 emails a month or more. On Resend, 100 extra domains cost $20/month, which is more than the Pro plan itself.
Bottom line
Under about 13,000 emails a month the two are within a few dollars, and Postmark's tooling is the tiebreaker. From 20,000 upward, Resend's included volume is cheaper by a factor that grows with usage — about 4x at 50,000 emails — unless Postmark's volume tier and reputation justify the difference for your sending pattern.
Frequently asked questions
Is there a cheaper Postmark plan between 100 and 10,000 emails?
No. Postmark's own FAQ states there is no tier between the 100-email free developer plan and the 10,000-email Basic plan at $15/month.
Do unused emails roll over to the next month?
No. Postmark states unused emails expire at the end of the billing period. Resend's paid plans use pay-as-you-go overage instead, billed in buckets of 1,000 emails.
What does a second sending domain cost?
On Resend the domains add-on is $20/month and adds 100 more domains to the plan's allowance. Postmark includes unlimited domains on paid plans and does not list a per-domain fee.
Is open and click tracking included for free?
Yes on Resend — tracking is a per-domain setting available on every plan including Free. On Postmark, link tracking is included, and open tracking has been part of the product since its early plans.
Sources
- Resend pricingChecked 2026-10-25
- Postmark pricingChecked 2026-10-25
Cite this page
Nadia Voss (2026). “Resend vs Postmark: What Transactional Email Costs in 2026”. Actual Database. https://actualdatabase.com/resend-vs-postmark-transactional-email-pricing/