Resend vs Postmark Pricing at Every Volume from 10,000 to 1.5 Million Emails

Postmark is cheaper than Resend at exactly two points: 10,000 emails a month ($15 against $20) and 1.5 million ($775 against $825). At every volume between, Resend costs less, often by a wide margin: $20 against $55 at 50,000 emails and $35 against $115 at 100,000. Neither sells an annual plan, and neither allows cold email.

We read both price lists on October 8, 2026: Resend's published pricing file and the plan data inside Postmark's pricing calculator, which carries prices for six volume steps that the plan cards never show. Every total and crossover below is our arithmetic on those figures, using the cheapest published way to reach each volume.

Resend vs Postmark pricing by plan

The two price lists are built differently. Resend sells a plan per volume band with a fixed overage rate. Postmark sells three feature tiers (Basic, Pro, Platform) and lets you commit to one of six volume steps on any of them.

Postmark's Pro and Platform tiers add features rather than volume. Pro costs 10% more than Basic at every step and adds inbound processing and adjustable retention. Platform costs 20% more and adds unlimited domains and users. Most buyers comparing on price should compare Resend against Postmark Basic, and switch to Pro only if they need inbound mail.

Which is cheaper at your volume?

Resend is cheaper from about 12,800 emails a month up to about 1.2 million. Postmark Basic is cheaper below 12,800 and at 1.5 million. The table shows the cheapest route on each platform at common monthly volumes.

The 10,000 crossover is simple. Postmark Basic is $15 for 10,000 and $1.80 for each extra 1,000, so it reaches Resend's $20 at about 12,800 emails. From there Resend's Pro plan, with 50,000 emails for $20, is far ahead.

At 1.5 million the order flips back because Postmark's last step is priced aggressively: $775 is $0.52 per 1,000, while Resend's 1.5 million step at $825 is $0.55. Postmark Pro at the same volume is $852.50, so the win only holds on Basic.

The Resend Pro overage route most comparisons miss

Resend's overage rate on Pro is $0.90 per 1,000, and its pricing file applies it to every email beyond the included volume. That makes Pro at $35 plus overage cheaper than Scale until about 450,000 emails a month. At 200,000 emails, Pro with overage comes to $125 against $160 for the 200,000 Scale step. At 300,000 it is $215 against $240.

Scale is still the right plan for some teams at those volumes. It is the only Resend tier that takes the $30 dedicated IP add-on and the $150 single sign-on add-on, and it raises the domain limit from 10 to 1,000. But if you only need volume, staying on Pro saves $25 to $55 a month between 100,000 and 300,000 emails. Resend does not publish a cap on Pro overage, so confirm with their team before you plan on sending 400,000 a month on it.

What does Postmark cost compared to Resend per 1,000 emails?

At 100,000 emails a month Postmark Basic costs $1.15 per 1,000 sent (you pay the $115 step for 125,000), against $0.35 on Resend Pro. At 1 million it costs $0.78 against Resend's $0.65. Postmark's unit price is high because the product is priced for transactional reliability, not volume.

Postmark's overage rates also run high: $1.80 per 1,000 on Basic at the lower steps and $1.70 above 300,000. A month that runs 20% over plan costs noticeably more on Postmark than on Resend, where overage is $0.90 on Pro and $0.46 to $0.80 on Scale. If your volume is spiky, price the busy month, not the average.

Inbound email, dedicated IPs and free plans

Three line items change the answer for specific buyers.

If you need to receive and parse replies at 10,000 emails a month, the fair comparison is Postmark Pro at $16.50 against Resend Pro at $20, and Postmark stays slightly cheaper. If you need a dedicated IP at 300,000 a month, Resend comes to about $270 (Scale 200,000 at $160, plus overage, plus the $30 IP) against $319.50 on Postmark Pro with one $50 IP.

Free plans are not close. Resend's 3,000 emails a month runs a small app in production. Postmark's 100 a month is for testing an integration.

Is Postmark worth the higher price?

Postmark is worth paying for when an email that arrives late or lands in spam costs you money: password resets, two-factor codes, receipts and alerts. Postmark has focused on transactional mail since 2010, publishes delivery time statistics, and enforces strict sending rules on every customer, which is exactly why its shared IPs stay clean. That strictness is what the price buys.

Resend is the better buy when you send a lot of application mail, work in React or Next.js and want React Email templates, or need inbound mail on a small budget. Its policy is just as strict on spam, with account closure possible above a 0.08% complaint rate or a 4% bounce rate. When sends stop arriving, the expensive part is often finding out late, so whichever you pick, set up a way to page the on-call engineer when delivery starts failing rather than waiting for support tickets.

Our full breakdowns of each price list are on the Resend pricing and Postmark pricing pages. If you are still choosing between several relays, Resend vs SendGrid and Postmark vs SendGrid cover the other common pairing, and MailerSend pricing covers the option that bundles SMS.

Can you send cold email through Resend or Postmark?

No. Resend's Acceptable Use Policy names cold outreach, purchased lists and scraped contact data as prohibited, and Postmark's terms require permission-based lists and prohibit purchased or rented ones. Both close accounts that run high complaint rates, and Resend says it issues no refunds after a policy breach.

So if part of the reason you are pricing a relay is outbound sales, take that volume out of the comparison. Cold outreach goes from mailboxes you own, on a domain you control, at a pace each inbox can carry. ColdMailer is built for that: you connect your Google Workspace, Microsoft 365 or SMTP inbox, import prospects, and it writes a personalized email for each one, runs follow-ups in the same thread and caps each inbox's daily sends. Plans start at $49 a month, and a new account gets 25 free emails to try it. Our guide to the best SMTP server for cold email explains the mailbox side.

Resend vs Postmark pricing questions

Is Resend cheaper than Postmark?

For most volumes, yes. Resend costs $20 for 50,000 emails and $35 for 100,000, while Postmark Basic costs $55 and $115 for the nearest steps. Postmark is cheaper only at 10,000 emails a month ($15 against $20) and at 1.5 million ($775 against $825).

Does Postmark have a free plan?

Yes, a developer plan with 100 emails a month that never expires. It is meant for testing. Resend's free plan sends 3,000 emails a month, capped at 100 a day.

Do Resend or Postmark offer annual pricing?

No. Resend bills self-serve plans monthly only and offers annual commitments only through sales. Postmark's FAQ says it does not offer annual plans right now.

Which is better for transactional email, Resend or Postmark?

Postmark is the safer choice when delivery speed and inbox placement of critical mail matter more than unit cost. Resend is the better value for high volume application mail and for teams building templates in React.

Does Postmark charge for inbound email?

Inbound messages count toward the same monthly allowance as outbound on Postmark, and inbound processing requires the Pro or Platform tier. Resend includes inbound email on every plan.