Postmark's core business is outbound email delivery. Inbound webhooks are a secondary feature. Mailhooks is purpose-built for inbound email — everything from the dashboard to the API is designed around receiving and routing email.
Postmark requires you to set up outbound sending (including domain verification and DNS records) before you can use inbound routes. If you only need to receive email, that's wasted setup time. Mailhooks lets you start receiving in 5 minutes with zero outbound configuration.
| Feature | Mailhooks | Postmark |
|---|---|---|
| Inbound email webhooks | ||
| Free tier | 100 emails/mo | 100 emails/mo (credit card required) |
| Setup time | 5 min | 20+ min |
| Standalone inbound | Requires outbound setup | |
| Structured JSON payloads | ||
| Attachment URLs | ||
| Real-time webhook delivery | ||
| IMAP client access | ||
| Notion integration | ||
| Discord integration | ||
| n8n integration | ||
| TypeScript SDK | ||
| BYO cloud storage | ||
| API playground | ||
| SSE push notifications |
No outbound sending features to configure or pay for. Mailhooks does one thing and does it well: receive email and deliver it to your system instantly.
Connect email to Notion, Discord, or n8n in seconds — no custom webhook handler required for common workflows.
Server-Sent Events push means your app gets inbound email instantly via an outbound-only connection. No exposed ports, no ngrok, no polling.
No outbound domain verification required. Create a mailhook, point it at your webhook URL, and start receiving email in minutes.
Postmark is a great product for outbound email. It might be the right choice if:
You need both outbound and inbound email from a single provider
Your primary use case is transactional email delivery, with inbound as a bonus
You need Postmark's advanced delivery analytics and bounce handling for outbound
Simpler inbound email webhooks vs Mailgun's full platform
Better DX for email webhooks vs SendGrid
Modern alternative for inbound email webhooks
Notion Mail shuts down 22 Sept 2026 — keep email flowing into Notion