In this guide, you’ll learn how to:

  • Connect your Resend account to Rocket.
  • Add your API key securely.
  • Start sending transactional emails from your app.

What is Resend?
Resend is a modern email API designed for high deliverability and fast integration.
It’s perfect for sending transactional emails like confirmations, alerts, and password resets.

Your API key stays safe with Rocket.
It’s encrypted at rest and never exposed - so you can connect with confidence.

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Before you begin

You’ll need:
  • A Rocket account - https://rocket.new.
  • A Supabase project already configured with your Rocket project.
  • A Resend account.

If you plan to support login, newsletter, or subscription emails, make sure Supabase Auth is enabled.
Rocket can link emails to user IDs for secure, personalized delivery.

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Connect Resend to Rocket

Add your Resend API key to your Rocket project for email functionality.

1

Start integration from chat or project settings

There are two ways to start connecting Resend to your Rocket project:

Method 1: Use Rocket Chat (fastest)

  • In any project, open the chat panel and type something like:
    Connect my Resend API
  • You’ll see a popup appear where you can paste and save your API key instantly.

This is ideal if you’re already chatting with Rocket while building - no clicks, just action.

Method 2: Navigate from My Projects

  • Click on the project you want to integrate with Resend from My Projects.

  • Click the Project Settings on the top navbar next to Preview.

  • Navigate to the Integrations tab.

    Access Integrations tab from project settings

  • Scroll through the integrations list.

  • Click the Resend card.

    Resend integration card in Rocket

2

Get your Resend API key

3

Paste and save the key in Rocket

  • Return to Rocket’s Resend integration screen.
  • Paste your API key into the textbox.
  • Click Save to complete setup.

Success check: You’ll see a green dot next to Resend in Integrations.

Important Security Notice
Never paste your Resend API Key directly into Rocket chat.
Always use the secure integration flow or the API key input provided in settings to connect your account safely.

4

Update or remove your Resend key

  • Click the Resend integration again.

  • Replace the existing key or click Disconnect to remove it.

    Remove Resend API key

Once connected, you can ask Rocket to create powerful email flows in seconds:

  • Send a welcome email when a user signs up.
  • Send a confirmation email after a form is submitted.
  • Add a newsletter subscription flow with Supabase + Resend.

Rocket will generate backend logic, templates, and secure data connections - no manual setup needed.

Resend emails must be tested in deployed mode.
Emails will not send in Rocket preview mode.

Use Resend’s Test Mode for safe testing and preview:

  • Confirm domain verification is complete
  • Use test email addresses where needed

Want to route Supabase Auth emails (like sign-in and password reset) through Resend?
Configure your Supabase project’s SMTP settings with Resend to customize delivery and email branding.
See the official guide: How to send with Supabase via Resend SMTP.

Resend also supports newsletters and marketing emails using Audiences and Broadcasts.
Design campaigns with built-in analytics and unsubscribe handling - all from your Resend dashboard.

You did it!

Resend is now connected to your Rocket project. You can securely send emails like onboarding messages, confirmations, or newsletters - automatically.

Need help? Reach out at support@rocket.new.