Transactional email APIs · Comparison
Postmark vs Resend
2 products compared side by side: what you pay for with each one first, then the five access facts, entry prices, recorded plan limits and the bottom line of each review. The evidence note under the table says how each product was checked.
Side by side
| Metric | Postmark | Resend |
|---|---|---|
| What you're paying for | Saves engineering timeInbound email processing and up to 365 days of message history from $16.50 a month, so you do not build mail parsing or log storage yourself. | Compliance includedA SOC 2 Type II report and a pre-signed GDPR DPA on every plan, with 3,000 free emails a month and 50,000 for $20. |
| Overall score | 5.8 | 8.2Best |
| Free option | Free plan | Free plan |
| Card to start | No card needed | –Not measured |
| Getting access | Self-serve | Self-serve |
| Starter priceCheapest paid plan | $15/mo | $20/mo |
| Pricing model | Usage-based | Tiered |
| Pricing page | Public prices | Public prices |
| Free plan | 100/mo (testing) | 3,000/mo, 100 a day |
| Price for 50,000 emails/mo | $66–$87 at listed overage rates | $20 (Pro) |
| Retention on the entry paid plan | 45 days (up to 365 on Pro) | 30 days |
| SOC 2 report | Data center's, under NDA | Type II, self-serve download |
| EU option | No; US hosting | EU sending region; data stored in the US |
| SSO | Not listed | $150/mo add-on on Scale |
| HIPAA BAA | Not mentioned | No |
| Bottom line | From its public pages, Postmark is the pick when inbound email and long message history matter more than price at volume. Check whether your security reviews accept a data-center SOC report. | From its public pages, Resend is the cheapest way here to send 50,000 emails a month and the easiest to clear a security review with. Check the data-residency and HIPAA limits first. |
Evidence: Postmark: facts checked 2026-10-15 from its public sign-up and pricing pages, no completed hands-on run; Resend: facts checked 2026-10-15 from its public sign-up and pricing pages, no completed hands-on run. Prices in USD as listed, excluding tax. "–" means not recorded.
When to pick each
In the words of each review, with the date its facts were checked.
From our Postmark review
Checked Oct 15, 2026- Pick Postmark when
- You need inbound processing or message history beyond 30 days, and want to start without a card.
- Pick Resend when
- You need a vendor SOC 2 Type II report, or send around 50,000 a month, where Resend’s $20 Pro plan costs less.
From our Resend review
Checked Oct 15, 2026- Pick Resend when
- You need a SOC 2 Type II report and a signed DPA without a sales call, and 50,000 emails for $20.
- Pick Postmark when
- You need inbound email processing or message history beyond 30 days, and want to start without a card.
Entry price
Baseline: each product's cheapest paid plan, per month. Included usage differs, so read the line under each price.
- PostmarkLowest priceBasic$15/mo10,000 emails/mo, then $1.80 per 1,000
- 45-day retention
- 5 custom domains
- Up to 4 users
- Unlimited emails per day
- ResendPro$20/mo50,000 emails/mo ($35 for 100,000), then $0.90 per 1,000
- No daily limit
- 10 domains
- 30-day data retention
Prices as listed on each pricing page, in USD per month, excluding tax. Observed: Postmark 2026-10-15, Resend 2026-10-15.
Which one fits
- If you need to start today without a sales call
- ResendSelf-serve sign-up; the highest score of the 2 self-serve products here (8.2/10).
- If you want to try it without entering a card
- PostmarkFree plan, no card needed; scored 5.8/10.
- Lowest starter price
- Postmark$15/mo for the Basic plan.
- Highest overall score
- Resend8.2/10 (Excellent). The review shows the score breakdown and the run behind it.
Picked by fixed rules from the table above, not by hand. How we score
Full reviews
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