Choose Postmark when inbox placement is the top priority — its transactional stream and speed are best-in-class — but its free tier is only 100 emails/mo. Choose Resend for the best Next.js developer experience and a far larger 3,000 emails/mo free tier. Both start paid plans at similar prices.
- Postmark: elite deliverability, 100/mo free, $15/mo for 10,000.
- Resend: best Next.js DX, 3,000/mo free, $20/mo for 50,000.
- Pick Postmark for critical receipts; Resend to start fast and cheap.
Resend vs Postmark: side by side
| Resend | Postmark | |
|---|---|---|
| Free tier | 3,000 emails/mo (100/day). | 100 emails/mo (no expiration). |
| Entry paid | $20/mo | $15/mo |
| Entry detail | Pro $20/mo (50,000), $35/mo (100,000). Scale from $90/mo. Overage $0.90/1k. | From $15/mo (10,000 emails). Overage $1.80/1k (Basic). |
| Dedicated IP | $30/mo (Scale) | From $50/mo (requires 300,000+/mo) |
| Best for | Best-in-class developer experience (React Email, type-safe) | Industry-leading deliverability and speed |
| Watch out | Newer at very large scale | Small free tier (100/mo) |
Postmark and Resend solve the same problem from different angles. Postmark has spent years optimizing for transactional deliverability: separate message streams for transactional and bulk mail, fast send times, and a reputation for landing in the inbox. That focus comes with a small free tier of just 100 emails per month, then $15/mo for 10,000 on the Basic plan.
Resend approaches the problem as a developer-experience product. Its 3,000 emails/mo free tier is far more generous for early projects, and its type-safe SDK plus React Email templates make it the smoothest fit for Next.js. Paid plans start at $20/mo for 50,000 emails, and a dedicated IP is available at $30/mo on Scale.
The decision usually comes down to risk tolerance on a few critical emails. If a missed password reset or invoice is a serious problem, Postmark's deliverability focus is worth the smaller free allowance. If you are building quickly, want to stay free while you find product-market fit, and value an ergonomic SDK, Resend is the better starting point — and you can revisit Postmark later for the specific streams where inbox placement is non-negotiable.
// app/api/send/route.ts
import { Resend } from "resend";
const resend = new Resend(process.env.RESEND_API_KEY!);
export async function POST(req: Request) {
const { to, subject, html } = await req.json();
// postmark equivalent: client.sendEmail({ From, To, Subject, HtmlBody })
const { data, error } = await resend.emails.send({
from: "noreply@yourdomain.com", to, subject, html,
});
return error
? Response.json({ error }, { status: 500 })
: Response.json({ id: data?.id });
}FAQ
- Is Postmark better than Resend for deliverability?
- Postmark has a longer, stronger deliverability track record and separate transactional/bulk streams, which is why teams pick it for critical mail. Resend's deliverability is solid and improving but newer.
- Which has a bigger free tier, Resend or Postmark?
- Resend, by a wide margin: 3,000 emails/mo free versus Postmark's 100 emails/mo.