In this guide, you’ll learn how to:
  • Connect your Resend account to Rocket.
  • Get your API key from Resend.
  • Add it securely in Rocket to start sending transactional emails from your app.
What is Resend?
Resend is a modern email API designed for high deliverability and fast integration.
It is perfect for sending transactional emails like confirmations, alerts, and password resets.
Your API key stays safe with Rocket.
It is 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 - rocket.new.
  • A Resend account.
  • A Supabase project connected to your Rocket app.
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

1

Get your Resend API key

Visit the Resend API Keys page to create or copy your key.
2

Add your Resend API key in Rocket

There are two ways to connect Resend to Rocket:Method 1: Use Rocket Chat (fastest)
  • In any project, open the chat panel and type something like:
    Connect my Resend account to:
    • 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.
  • You will see a popup appear where you can paste and save your API key instantly.
    Resend integration popup in chatResend integration popup in chat

    Resend integration popup in chat

This is ideal if you are already chatting with Rocket while building. No clicks, just action.
Method 2: From a Rocket project
  • Open any project.
  • Go to Integrations.
    Integrations tabIntegrations tab

    Integrations tab

  • Scroll through the integrations list.
  • Click the Resend card.
    Click Resend integration in Project settingsClick Resend integration in Project settings

    Resend integration card in Project settings

When you connect Resend from Project Settings, Rocket will not automatically create email flows.After saving your API key, you must describe the email flow you want in chat for Rocket to implement it.
3

Save your API key in Rocket

  • In Rocket’s Resend integration screen, paste your API key into the textbox.
  • Click Save to complete setup.
Success check: You will 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 keyRemove Resend API key

    Remove Resend API key

Once connected, just describe your email flow in chat and Rocket will handle the rest.It instantly generates the logic, templates, and secure data hookups you need. No setup, no stress.
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? We are here for you.
Email us at support@rocket.new or join our Discord community to get help, share ideas, and connect with other creators.