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vercel-labs
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resend

Emulate the Resend API locally to send and inspect emails.

1.5k|108|Updated Mar 20, 2026
Search Tags:#development#magic link#email#local testing#verification email
One-click install
npx skills add https://github.com/vercel-labs/emulate --skill resend-vercel-labs
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: resend
Source: https://github.com/vercel-labs/emulate/tree/main/skills/resend
Command: npx skills add https://github.com/vercel-labs/emulate --skill resend-vercel-labs

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires emulate, and includes scripts (resource) and references (resource) and assets (resource) components.

What problem does it solve?

This Skill addresses the challenge of sending emails locally for development and testing without actually sending out real emails, thus preserving your email list and avoiding unnecessary charges.

Core Features & Use Cases

  • Local Email Sending: Simulate sending emails as if they were being sent over a real email service.
  • Email Management: Store, view, and manage sent emails in a browser or via REST API.
  • Use Case: Use this Skill when implementing a magic link or verification code for authentication in your app, and you want to test the flow without using real emails.

Quick Start

To send an email, use the 'npx emulate resend' command.

Frequently Asked Questions about resend

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I test verification emails locally without sending real messages?▼

Emulate the Resend API to test magic link authentication flows locally, intercepting email sending requests so you can verify tokens and links without sending actual emails or incurring charges.

Can I manage API keys and domains during local email development?▼

Yes, you can manage API keys and domains during local email development by using the emulated Resend API to configure and inspect these resources without connecting to the real email service.

How do I view emails sent during local testing?▼

Inspect locally sent emails through the browser interface or REST API provided by the emulation service, allowing you to view stored email payloads and verify content during development.

Do I need the emulate service running to test email flows locally?▼

The emulate service must be running to intercept and process local email API requests, providing the necessary environment to simulate sending and managing emails during development.

What is the best way to avoid email charges when developing authentication features?▼

Avoid email charges when developing authentication features by using a local email API emulator that simulates sending magic links and verification codes locally, preventing real emails from being sent to your user list.

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