Resend
Resend is a developer-first email API platform that simplifies sending and managing transactional and marketing emails. It provides a clean REST API with bearer token authentication, supporting email sending, domain management, API key management, audience and contact management, and broadcast campaigns. Resend offers SDKs for Node.js, Python, Go, Ruby, PHP, Java, .NET, Rust, Elixir, and more, along with a React Email library and official MCP server.
Resend publishes 13 APIs on the APIs.io network, including Apis API, Audience API, Audiences API, and 10 more. Tagged areas include Email, Developer Tools, Transactional Email, and Marketing Email.
The Resend catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 3 Spectral governance rulesets.
Resend’s developer surface includes changelog, engineering blog, code examples, pricing, signup flow, CLI, and 22 more developer resources.
Kin Score
APIs 13
Individual APIs this provider publishes, each with its own machine-readable definition.
Resend Apis API
The Apis API from Resend — 2 operation(s) for apis.
Resend Audience API
The Audience API from Resend — 3 operation(s) for audience.
Resend Audiences API
Create and manage Audiences through the Resend API.
Resend Batch API
The Batch API from Resend — 1 operation(s) for batch.
Resend Broadcasts API
The Broadcasts API from Resend — 2 operation(s) for broadcasts.
Resend Cancel API
The Cancel API from Resend — 1 operation(s) for cancel.
Resend Contacts API
Create and manage Contacts through the Resend API.
Resend Domains API
Create and manage domains through the Resend API.
Resend Email API
The Email API from Resend — 3 operation(s) for email.
Resend Emails API
Start sending emails through the Resend API.
Resend Keys API
The Keys API from Resend — 2 operation(s) for keys.
Resend Send API
The Send API from Resend — 1 operation(s) for send.
Resend Verify API
The Verify API from Resend — 1 operation(s) for verify.
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Postman Collections 13
Ready-to-run Postman collections for exercising this provider's APIs.
Resend Apis API
POSTMANResend Audience API
POSTMANResend Audiences API
POSTMANResend Batch API
POSTMANResend Broadcasts API
POSTMANResend Cancel API
POSTMANResend Contacts API
POSTMANResend Domains API
POSTMANResend Email API
POSTMANResend Emails API
POSTMANResend Keys API
POSTMANResend Send API
POSTMANResend Verify API
POSTMANScroll for all 13
MCP Servers 1
Model Context Protocol servers that expose these APIs to AI agents.
MCP Server
MCP SERVERAgent Skills 5
Packaged agent skills for driving this provider's APIs from an AI assistant.
agent-email-inbox
AGENT SKILLemail-best-practices
AGENT SKILLreact-email
AGENT SKILLresend-cli
AGENT SKILLresend
AGENT SKILLGraphQL 1
GraphQL schemas published by this provider.
Resend GraphQL Schema
Resend is a developer-first email API platform for sending and managing transactional and marketing emails. Resend's public API is REST-based; this GraphQL schema is a conceptua...
GRAPHQLPricing Plans 1
Published pricing tiers and plan structures.
Resend Plans Pricing
PLANSRate Limits 1
Documented rate limits and quota policies.
Resend Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals for API financial operations.
Resend Finops
FINOPSEvent Specifications 1
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Resend Webhooks
AsyncAPI 2.6 description of the Resend webhook surface. Resend delivers webhook events to subscriber-configured HTTPS endpoints using Svix as the underlying delivery and signing...
ASYNCAPISemantic Vocabularies 1
JSON-LD contexts and semantic vocabularies used across these APIs.
Resend Context
JSON-LDSpectral Rules 3
Spectral governance rulesets for linting and validating these APIs.
JSON Schema 3
Standalone JSON Schema definitions for this provider's data models.
JSON Structure 1
JSON Structure definitions describing this provider's data shapes.
Resend Email Structure
JSON STRUCTUREExamples 2
Example request and response payloads for these APIs.
Resend Send Email Example
EXAMPLESecurity Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Resources
Get Started 2
Portal, sign-up, and the first successful call
Agent Surfaces 3
MCP servers, agent skills, and machine-readable catalogs
Build 10
SDKs, sample code, and the tooling you integrate with
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Access & Security 4
Authentication, authorization, and security posture
Operate 4
Status, limits, changes, and where to get help
Commercial 1
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Other 1
Properties that don't map to a standard resource type