Postmark is specifically built to deliver your app’s emails to the inbox, fast. Instantly send and receive transactional email with zero maintenance. Since we send transactional only, ISPs love us. Our infrastructure combined with proper co...

Postmark API profile

API styles

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Developer docs

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API Reference

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Webhooks

Webhooks management API

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Sandbox environment

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Authentication

Identity protocols

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SSO / Social login

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OAuth playground

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GraphQL playground

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API Explorer

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Postman / Insomnia collections

Run in PostmanRun in Insomnia

OpenAPI/Swagger specs

Free developer account

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App listing requirements

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Pagination style

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CLI

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Query Language

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Community

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GitHub

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Custom object support

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Stackoverflow tags

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Integrations

Ecosystem

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API pricing

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API rate limits

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API changelog

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Status page

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Open-source

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Tutorials

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Samples & examples

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Base endpoint

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GraphQL endpoint

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IDE Extensions

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Estimated developers

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Estimated customers

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Estimated users

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