Resend API

resend.com

Provides a REST API for developers to send transactional and marketing emails at scale.

The Resend API API uses api key authentication; has freemium pricing; offers a free tier (Free plan: $0/mo, 3,000 emails/mo, limited to 100 emails per day). Verified 2026-07-13 with per-field source links.

Communication Verified 2026-07-13 medium confidence

Base URL

not documented null

no source

Auth

api_key

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Free tier

Free plan: $0/mo, 3,000 emails/mo, limited to 100 emails per day

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Pricing model

freemium

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Pricing

Free $0/mo (3,000 emails); Pro from $20/mo (50,000 emails); Scale from $90/mo (100,000 emails); Enterprise custom. Overage $0.46-$0.90 per 1,000. Marketing plans priced by contacts. Automations $0.0015/run beyond 10,000 free.

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Rate limits

not documented null

no source

OpenAPI spec

https://resend.com/openapi.json

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MCP server

https://mcp.resend.com/mcp

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