React Email Skill

Build HTML email with React components.

The TypeScript SDK can render React email components to HTML locally when React and React DOM are installed in the application.

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This page is intentionally concise. Use the neighboring guides below for the next implementation details, route contracts, or operational steps.

MCP Server

Use OpenSend from MCP-compatible AI clients.

AI Onboarding

Onboard coding agents to OpenSend.

Agent Email Inbox Skill

Build an agent inbox on top of OpenSend receiving without exposing raw mailbox access to the agent runtime.

Email Best Practices Skill

Guardrails for production email systems.

Custom Event Schemas

Define and validate custom event payloads.

Send emails with Java and Kotlin

Use the first-party OpenSend JVM SDK from plain Java, Kotlin, Spring Boot services, workers, and command-line applications. The package lives in this repository at packages/jvm-sdk while registry publishing is prepared. This is a partial, blocking-only SDK for emails, contacts, domains, and suppressions; use the REST API and /openapi.json for other resources.