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Introduction
Create an API key
Verify a domain
Email types
Sending examples

Learn

Domains
- DNS records
- Custom return path
Sending
- Idempotency keys
- Scheduling
Broadcasts
Webhooks
- Event types
- Verify signatures

Resources

SDKs
CLI
Integrations

API Reference

API introduction
Pagination
Rate limits
Endpoints

Resources
Integrations

Integrations

Postwick plugs into the tools you already use.

Point any app that speaks SMTP at smtp.postwick.dev

Deliver sign-in links and codes

Retry safely with idempotency keys

Updated Oct 12, 2026

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