Postmark vs Resend: pricing, quotas & features (2026)
Reliable transactional email with fast delivery
vs. The email API for developers — built by the Nodemailer team
Data sourced from vendor documentation · Last updated June 2026
Summary
Postmark and Resend are both email platforms, addressing the same core use case with different implementation philosophies and trade-offs. Both offer a free tier, making it easy to prototype without a credit card. Postmark's paid plans start at $15/month, lower than Resend's entry point at $20/month. Both have 12 documented features in Staxly's catalog. Budget-sensitive teams will find Postmark easier to justify early on. All pricing and quota data below is sourced from Postmark and Resend's official documentation — not generated by AI or estimated.
Postmark vs Resend: Comparativa de precios, cuotas y características (2026)
En esta comparativa analizamos Postmark y Resend lado a lado — incluyendo precios mensuales, límites del tier gratuito, características técnicas, cuotas de uso (almacenamiento, transferencia, usuarios activos mensuales) y los interfaces de desarrollo disponibles. Todos los datos proceden de la documentación oficial de cada proveedor, no de respuestas generadas por IA.
Postmark es una plataforma de la categoría email — Reliable transactional email with fast delivery. Ofrece 5 tiers de precio: Free gratuito, Basic — 10k desde $15/mes, Pro — 10k desde $17/mes, Platform — 10k desde $18/mes. Su catálogo en Staxly documenta 12 características y 10 interfazes para desarrolladores.
Resend pertenece a la categoría email — The email API for developers — built by the Nodemailer team. Ofrece 6 tiers de precio: Free gratuito, Pro — 50k desde $20/mes, Pro — 100k desde $35/mes, Scale — 100k+ desde $90/mes. Su catálogo documenta 12 características y 10 interfazes para desarrolladores.
A continuación encontrarás los tiers de precio completos de ambas plataformas, una matriz de cuotas del tier gratuito (transferencia, almacenamiento, MAU, llamadas a la API y otros límites), el listado completo de características y los interfaces (CLI, SDKs, REST, GraphQL, MCP) disponibles para integrar cada servicio.
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Pricing tiers
Postmark
Resend
Free-tier quotas head-to-head
Comparing free on Postmark vs free on Resend.
| Metric | Postmark | Resend |
|---|---|---|
| custom domains | — | 1 domains |
| emails per day | — | 100 emails/day |
| emails per month | — | 3000 emails/month |
Features
Postmark · 12 features
- Activity Search — Full-text search over sent messages for 45-365 days.
- Bounce Handling — Automatic hard/soft bounce detection + suppression management.
- Broadcast Messages — Via separate Broadcast Message Stream. Bulk sends with throttling.
- DKIM + SPF — One-click verification + auto-renewal of DKIM keys.
- Inbound Email — Route inbound emails to your webhook. Parse attachments, threads.
- Message Streams — Isolate transactional from marketing for separate deliverability reputation.
- Open + Click Tracking — Configurable at template or send level.
- Raw API Access — 100+ endpoints for bounces, servers, tags, templates, stats.
- Servers — Multi-tenant isolation: each "server" has its own API token + reputation.
- Templates — Mustachio template language with variables, alias + versioning.
- Transactional Send — Reliable API for password resets, receipts, notifications. Sub-10s delivery.
- Webhook Events — Delivery, bounce, spam complaint, open, click, subscription change.
Resend · 12 features
- Audiences — Contact list management with custom fields.
- Batch Send — Send up to 100 emails in one API call.
- Broadcasts — Bulk email campaigns with audiences, A/B testing, analytics.
- Dedicated IP — Add-on for high-volume senders. Auto warmup.
- Domains — DKIM/SPF/DMARC auto-verification. Per-domain analytics.
- Idempotency — Prevent duplicate sends with Idempotency-Key header.
- Logs + Analytics — Full email logs, delivery heatmap, events table.
- React Email — OSS library (3M+ downloads) to compose emails in React/JSX.
- Scheduled Send — scheduledAt parameter for future delivery.
- Send API — POST /emails endpoint to send. Supports attachments, scheduled send, idempotency…
- Suppressions — Auto-managed bounce + complaint list. API to add/remove.
- Webhooks — Email lifecycle events: sent, delivered, bounced, complained, opened, clicked.
Developer interfaces
| Kind | Postmark | Resend |
|---|---|---|
| CLI | — | Resend CLI |
| SDK | postmark (Node), postmark-dotnet, postmark-go, postmark-php, postmark-rails, postmarker (Python) | react-email, resend-go, resend-node, resend-php, resend-python, resend-ruby |
| REST | Postmark REST API | Resend REST API |
| OTHER | Inbound Email, SMTP Relay, Webhooks | SMTP Relay, Webhooks (Svix) |
Key takeaways
- Both Postmark and Resend offer a free tier — Postmark ("Free") and Resend ("Free") — with no credit card required to start.
- The entry-level paid plan is $15/month for Postmark (Basic — 10k) vs. $20/month for Resend (Pro — 50k).
- Both platforms have 12 documented features in Staxly's catalog.
- Developer integrations differ: only Resend offers CLI.
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