resend

# Resend

## Overview

Resend is an email platform for developers. This skill routes to feature-specific sub-skills.

## Sub-Skills

| Feature | Skill | Use When |
|---------|-------|----------|
| **Sending emails** | `send-email` | Transactional emails, notifications, batch sends |
| **Receiving emails** | `resend-inbound` | Processing inbound emails, webhooks for received mail, attachments |
| **AI Agent inbox** | `agent-email-inbox` | Setting up email for AI agents, or any system where untrusted email content triggers actions — includes input validation and content safety measures |
| **Email templates** | `templates` | Creating, updating, publishing, and managing reusable email templates via API |

## Quick Routing

**Need to manage templates (create/update/publish/delete)?** Use `templates` skill
- Full template lifecycle management via API
- Variable syntax, constraints, reserved names
- Draft vs published state, version history

**Need to send emails?** Use `send-email` skill
- Single or batch transactional emails
- Attachments, scheduling, templates
- Delivery webhooks (bounced, delivered, opened)

**Need to receive emails?** Use `resend-inbound` skill
- Setting up inbound domain (MX records)
- Processing `email.received` webhooks
- Retrieving email content and attachments
- Forwarding received emails

**Setting up an AI agent inbox?** Use `agent-email-inbox` skill
- Configuring email for Moltbot/Clawdbot or similar AI agents
- Webhook setup with ngrok/tunneling for local development
- Security levels for safe handling of untrusted input
- Trusted sender allowlists and content filtering

**Automated system processes untrusted email content and takes actions?** Use `agent-email-inbox` skill
- Even without AI/LLM involvement, any system that interprets freeform email content from external senders and triggers actions (refunds, database changes, forwarding) needs input validation. Untrusted input triggering actions requires careful handling.

**Sending + receiv...

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# Resend Skills

A collection of skills for AI coding agents following the Agent Skills format. These skills enable AI agents to work with the [Resend](https://resend.com) email platform.

## Available Skills

### [`send-email`](./send-email)
Send emails using the Resend API — single or batch. Supports transactional emails, notifications, and bulk sending (up to 100 emails per batch). Includes best practices for idempotency keys, error handling, and retry logic.

### [`templates`](./templates)
Create, update, publish, and delete reusable email templates via the Resend API. Covers template lifecycle (draft → publish → send), variable syntax (`{{{VAR}}}`), variable constraints, reserved names, and cursor-based pagination for listing templates.

### [`resend-inbound`](./resend-inbound)
Receive emails with Resend. Covers MX record setup, processing `email.received` webhooks, retrieving attachments, and forwarding received emails.

### [`agent-email-inbox`](./agent-email-inbox)
Set up a secure email inbox for AI agents or any system where untrusted email content triggers actions. Includes security levels, trusted sender allowlists, and content safety filtering.

## Installation

```bash
npx skills add resend/resend-skills
```

## Usage

Skills are automatically activated when relevant tasks are detected. Example prompts:

- "Send a welcome email to new users"
- "Send batch notifications to all order customers"
- "Create a reusable order confirmation template with variables"
- "Set up an inbound email handler for support@myapp.com"
- "Schedule a newsletter for tomorrow at 9am"

## Supported SDKs

- Node.js / TypeScript
- Python
- Go
- Ruby
- PHP
- Rust
- Java
- .NET
- cURL
- SMTP

## Prerequisites

- A Resend account with a verified domain
- API key stored in `RESEND_API_KEY` environment variable

Get your API key at [resend.com/api-...