Resend

What this skill does

Resend is a developer-friendly transactional email service designed for sending reliable, real-time emails through a simple REST API. It supports sending single or batch emails, integrating React-based templates, and provides detailed email status tracking from queued to delivered and opened. With authentication via API keys and support for domain verification, Resend enables precise control over email sending workflows, including CLI and SDK options for Node.js, Python, and Go.

Who it's for

This skill is ideal for performance marketers and growth leads managing transactional email flows like welcome messages, password resets, or purchase receipts. It suits agency strategists implementing personalized email campaigns that require React template integration for dynamic content. Additionally, developers who need a straightforward, API-driven email platform with quick CLI testing capabilities will find Resend effective for streamlining email operations.

Key workflows

Practitioners typically start by setting up API keys and verifying sending domains within the Resend dashboard to ensure deliverability. Next, they configure email sending either via the REST API or SDK, embedding HTML or React templates for dynamic content. Monitoring follows by querying email status endpoints or subscribing to webhook events to track deliveries, opens, clicks, and bounces. Finally, batch sending is used to scale transactional emails, adjusting parameters like rate limits based on the plan to optimize throughput.

Common questions

How do I authenticate API requests? Use an API key included in the Authorization header as `Bearer {api_key}`. Can I send emails using React components? Yes, Resend supports React-based templates passed as props in the email payload. What about tracking email delivery and engagement? You can retrieve email statuses via API or set up webhooks for real-time event notifications like opens and clicks.

How to use in Metaflow

Attach the Resend skill to an agent task by providing your API key and configuring the email payload, including recipients, subject, and content or React template references. Expect straightforward email sending with status updates available through Metaflow, enabling you to integrate transactional email workflows seamlessly. Detailed monitoring and batch operations are supported, allowing you to automate complex email sequences efficiently.

For broader context, see our roundup of marketing skills claude, and read Claude Code reporting workflows for marketing agencies for related setup guidance.